                         8225 FAST ETHERNET STACKABLE HUB     GA27-4139-00



                         INSTALLATION AND USER'S GUIDE





  IBM                    8225 FAST ETHERNET STACKABLE HUB     GA27-4139-00



                         INSTALLATION AND USER'S GUIDE





  +--- NOTE -----------------------------------------------------------+

  |                                                                    |

  | Before using this information and the product it supports, be sure |

  | to read the general information under "Notices" on page C-3 and    |

  | "Electronic Emission Notices" on page C-4.                         |

  |                                                                    |

  +--------------------------------------------------------------------+





  1ST EDITION (AUGUST 1996)



  THE FOLLOWING PARAGRAPH DOES NOT APPLY TO THE UNITED KINGDOM OR ANY

  COUNTRY WHERE SUCH PROVISIONS ARE INCONSISTENT WITH LOCAL

  LAW:  INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS

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  not allow disclaimer of express or implied warranties in certain

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  errors.  Changes are periodically made to the information herein;

  these changes will be incorporated in new editions of the publication.

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      Department CGF

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  to use or distribute the information in any way it believes

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  (C) COPYRIGHT INTERNATIONAL BUSINESS MACHINES CORPORATION 1996.  ALL

  RIGHTS RESERVED.

  Note to U.S. Government Users -- Documentation related to restricted

  rights -- Use, duplication or disclosure is subject to restrictions

  set forth in GSA ADP Schedule Contract with IBM Corp.





  CONTENTS

  ________





  SAFETY INFORMATION   . . . . . . . . . . . . . . . . . . . . . . . . . .   XI

    Lithium Battery  . . . . . . . . . . . . . . . . . . . . . . . . . .   xiii



  ABOUT THIS MANUAL  . . . . . . . . . . . . . . . . . . . . . . . . . . .   XV

  Who Should Read This Manual  . . . . . . . . . . . . . . . . . . . . . .   xv

  How This Manual Is Organized   . . . . . . . . . . . . . . . . . . . . .   xv

  Technical and Planning References  . . . . . . . . . . . . . . . . . . .  xvi



  CHAPTER 1.  INTRODUCTION AND PLANNING  . . . . . . . . . . . . . . . . .  1-1

  The 8225   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-1

    Features   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-1

    Stacks   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3

    Interconnecting 8225s  . . . . . . . . . . . . . . . . . . . . . . . .  1-4

  Understanding Managed Stacks   . . . . . . . . . . . . . . . . . . . . .  1-4

    Inter-8225 Communications in Managed Stacks  . . . . . . . . . . . . .  1-4

    Why Segment 8225s within a Stack?  . . . . . . . . . . . . . . . . . .  1-5

    Segmenting 8225s within a Stack  . . . . . . . . . . . . . . . . . . .  1-6

    Linking Segmented 8225s  . . . . . . . . . . . . . . . . . . . . . . .  1-6

  Assigning Backup Ports   . . . . . . . . . . . . . . . . . . . . . . . .  1-7

  Fast Ethernet Planning   . . . . . . . . . . . . . . . . . . . . . . . .  1-8

    Maximum Segment Lengths  . . . . . . . . . . . . . . . . . . . . . . .  1-8

  Cables and Connectors  . . . . . . . . . . . . . . . . . . . . . . . . .  1-8

    Cabling Requirements for 100BASE-TX Ports  . . . . . . . . . . . . . .  1-9

    Cabling Requirements for the Fast Expansion Modules  . . . . . . . . .  1-9

    Cabling Requirements for the Management Port   . . . . . . . . . . .   1-10

  Protected Vital Configuration Data   . . . . . . . . . . . . . . . . .   1-10

  Power Requirements and Characteristics   . . . . . . . . . . . . . . .   1-13

  Physical Characteristics   . . . . . . . . . . . . . . . . . . . . . .   1-13

  Operating Environment  . . . . . . . . . . . . . . . . . . . . . . . .   1-14

    Space Requirements   . . . . . . . . . . . . . . . . . . . . . . . .   1-14

    Environmental Requirements   . . . . . . . . . . . . . . . . . . . .   1-14

  Acoustic Characteristics   . . . . . . . . . . . . . . . . . . . . . .   1-14

  Documenting Your Installation  . . . . . . . . . . . . . . . . . . . .   1-16

    Rack Document  . . . . . . . . . . . . . . . . . . . . . . . . . . .   1-16

    Stack Document   . . . . . . . . . . . . . . . . . . . . . . . . . .   1-16

    Setup and Cabling Document   . . . . . . . . . . . . . . . . . . . .   1-16

    Locator Document   . . . . . . . . . . . . . . . . . . . . . . . . .   1-16



  CHAPTER 2.  INSTALLING THE 8225  . . . . . . . . . . . . . . . . . . . .  2-1

  Before You Begin   . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-1

  Setup  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-1

    Rack-Mounting the 8225   . . . . . . . . . . . . . . . . . . . . . . .  2-1

    Surface-Mounting the 8225  . . . . . . . . . . . . . . . . . . . . . .  2-2

    Installing the Optional Redundant Power Module   . . . . . . . . . . .  2-3

    Installing a Fast Expansion Module   . . . . . . . . . . . . . . . . .  2-4

  Installing and Routing Cables  . . . . . . . . . . . . . . . . . . . . .  2-4

    Connecting Cables to 100BASE-TX Ports and Fast Expansion Modules   . .  2-4

    Connecting Hub Interconnect Cables   . . . . . . . . . . . . . . . . .  2-5





  (C) Copyright IBM Corp. 1996                                              iii





    Connecting a Modem or a Null-Modem Cable to the Management Port  . . .  2-6

  Powering On the 8225   . . . . . . . . . . . . . . . . . . . . . . . . .  2-6



  CHAPTER 3.  8225 ADMINISTRATION  . . . . . . . . . . . . . . . . . . . .  3-1

  The 8225 User Interface Program  . . . . . . . . . . . . . . . . . . . .  3-1

    Management Using Terminal Emulation Software   . . . . . . . . . . . .  3-1

    Establishing a Session with the 8225   . . . . . . . . . . . . . . . .  3-3

  Model 001 Management Options   . . . . . . . . . . . . . . . . . . . . .  3-4

    Set FEM Status   . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-5

  Model 002 and Model 003 Management Options   . . . . . . . . . . . . . .  3-7

    Exit   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-9

    Restart System   . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-9

    System Information   . . . . . . . . . . . . . . . . . . . . . . . . .  3-9

    SNMP Configuration   . . . . . . . . . . . . . . . . . . . . . . . .   3-10

    Segment Configuration  . . . . . . . . . . . . . . . . . . . . . . .   3-15

    Hub Configuration  . . . . . . . . . . . . . . . . . . . . . . . . .   3-17

    Port Configuration   . . . . . . . . . . . . . . . . . . . . . . . .   3-22

    Port Backups   . . . . . . . . . . . . . . . . . . . . . . . . . . .   3-26

    Port Intrusion Control   . . . . . . . . . . . . . . . . . . . . . .   3-28

    TFTP Download  . . . . . . . . . . . . . . . . . . . . . . . . . . .   3-31

    Xmodem Download  . . . . . . . . . . . . . . . . . . . . . . . . . .   3-33

    User Passwords   . . . . . . . . . . . . . . . . . . . . . . . . . .   3-35

    Console Lockout  . . . . . . . . . . . . . . . . . . . . . . . . . .   3-37

    Segment Statistics   . . . . . . . . . . . . . . . . . . . . . . . .   3-38

    Hub Statistics   . . . . . . . . . . . . . . . . . . . . . . . . . .   3-40

    Port Statistics  . . . . . . . . . . . . . . . . . . . . . . . . . .   3-42

  Understanding the LEDs   . . . . . . . . . . . . . . . . . . . . . . .   3-47

  Getting New Microcode  . . . . . . . . . . . . . . . . . . . . . . . .   3-51

  Management Using Telnet  . . . . . . . . . . . . . . . . . . . . . . .   3-53

    Configuring for SLIP   . . . . . . . . . . . . . . . . . . . . . . .   3-53

  Preparing for SNMP Management  . . . . . . . . . . . . . . . . . . . .   3-54

    Setting an IP Address Using BootP  . . . . . . . . . . . . . . . . .   3-54



  CHAPTER 4.  TROUBLESHOOTING AND SERVICE  . . . . . . . . . . . . . . . .  4-1

  Problem Determination  . . . . . . . . . . . . . . . . . . . . . . . . .  4-1

    LED Symptom and Fix Listing  . . . . . . . . . . . . . . . . . . . . .  4-1

    Hot-Swapping 8225s   . . . . . . . . . . . . . . . . . . . . . . . . .  4-4

    Problem Determination Through the Management Port  . . . . . . . . . .  4-4

    Sample 1   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-5

    Sample 2   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4-6

  Parts Removal and Replacement Procedures   . . . . . . . . . . . . . . .  4-7

    8225 Hub Replacement   . . . . . . . . . . . . . . . . . . . . . . . .  4-7

    Management Board Replacement   . . . . . . . . . . . . . . . . . . . .  4-7

    SIMM Memory Replacement  . . . . . . . . . . . . . . . . . . . . . . .  4-9

    Fast Expansion Module Replacement  . . . . . . . . . . . . . . . . .   4-10

    Fan Replacement  . . . . . . . . . . . . . . . . . . . . . . . . . .   4-11

    Power Module Replacement   . . . . . . . . . . . . . . . . . . . . .   4-13

  8225 Parts Catalog   . . . . . . . . . . . . . . . . . . . . . . . . .   4-15

    Available Features for Your 8225   . . . . . . . . . . . . . . . . .   4-16

  Help and Warranty Service Information  . . . . . . . . . . . . . . . .   4-19

    Step 1:  Troubleshooting   . . . . . . . . . . . . . . . . . . . . .   4-19

    Step 2:  Preparing for the Call  . . . . . . . . . . . . . . . . . .   4-19

    Step 3:  Placing the Call to IBM   . . . . . . . . . . . . . . . . .   4-20





  iv  8225 Hub Installation and Planning Guide





  APPENDIX A.  CABLE PINOUT DIAGRAMS   . . . . . . . . . . . . . . . . . .  A-1

  Straight-Through 100BASE-TX Cables   . . . . . . . . . . . . . . . . . .  A-1

    Straight-Through 100BASE-TX Cables for STP   . . . . . . . . . . . . .  A-2

  Crossover 100BASE-TX Cables  . . . . . . . . . . . . . . . . . . . . . .  A-2

    Crossover 100BASE-TX Cables for STP  . . . . . . . . . . . . . . . . .  A-2



  APPENDIX B.  THE IBM 8225 MANAGEMENT INFORMATION BASE  . . . . . . . . .  B-1



  APPENDIX C.  PRODUCT WARRANTY AND NOTICES  . . . . . . . . . . . . . . .  C-1

  Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  C-3

  Electronic Emission Notices  . . . . . . . . . . . . . . . . . . . . . .  C-4

    Industry Canada Class A Emission Compliance Statement  . . . . . . . .  C-4

    European Community (CE) Mark of Conformity Statement   . . . . . . . .  C-4

    Japanese Voluntary Control Council for Interference (VCCI) Statement    C-5

    KOREAN COMMUNICATIONS STATEMENT  . . . . . . . . . . . . . . . . . . .  C-5

  Trademarks   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  C-5



  GLOSSARY OF TERMS AND ABBREVIATIONS  . . . . . . . . . . . . . . . . . .  X-1



  INDEX  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   X-17





                                                                    Contents  v





  vi  8225 Hub Installation and Planning Guide





  FIGURES

  _______





    1-1.  Front View of the IBM 8225 Fast Ethernet Stackable Hub   . . . .  1-1

    2-1.  Rotating the Rack-Mounting Brackets  . . . . . . . . . . . . . .  2-2

    2-2.  Attaching the Cable Management Bracket   . . . . . . . . . . . .  2-2

    2-3.  Loosen the Knurled Knobs.  . . . . . . . . . . . . . . . . . . .  2-3

    2-4.  8225 Hub Interconnect Cable (P/N 85H3825)  . . . . . . . . . . .  2-5

    2-5.  Example 8225 Stack   . . . . . . . . . . . . . . . . . . . . . .  2-5

    2-6.  Location of the Management Port  . . . . . . . . . . . . . . . .  2-6

    2-7.  Connecting the Power Cord  . . . . . . . . . . . . . . . . . . .  2-6

    3-1.  Model 001 Main Menu Panel  . . . . . . . . . . . . . . . . . . .  3-4

    3-2.  Model 001 Set FEM Status Panel   . . . . . . . . . . . . . . . .  3-6

    3-3.  Model 002 and Model 003 Main Menu Panel  . . . . . . . . . . . .  3-7

    3-4.  System Information Panel   . . . . . . . . . . . . . . . . . . .  3-9

    3-5.  SNMP Configuration Panel   . . . . . . . . . . . . . . . . . .   3-10

    3-6.  SNMP Communities Panel   . . . . . . . . . . . . . . . . . . .   3-11

    3-7.  IP Trap Managers Panel   . . . . . . . . . . . . . . . . . . .   3-12

    3-8.  IPX Trap Managers Panel  . . . . . . . . . . . . . . . . . . .   3-13

    3-9.  Auto-Discovery Configuration Panel   . . . . . . . . . . . . .   3-14

   3-10.  Segment Configuration Panel  . . . . . . . . . . . . . . . . .   3-15

   3-11.  Hub Configuration: Hub Selection Panel   . . . . . . . . . . .   3-17

   3-12.  Hub Configuration Panel  . . . . . . . . . . . . . . . . . . .   3-18

   3-13.  Hub ID Configuration Panel   . . . . . . . . . . . . . . . . .   3-20

   3-14.  Port Configuration: Port Selection Panel   . . . . . . . . . .   3-22

   3-15.  Port Configuration Panel   . . . . . . . . . . . . . . . . . .   3-23

   3-16.  FEM Port Configuration Panel   . . . . . . . . . . . . . . . .   3-24

   3-17.  Port Backups Panel   . . . . . . . . . . . . . . . . . . . . .   3-26

   3-18.  Port Intrusion Control: Hub Selection Panel  . . . . . . . . .   3-28

   3-19.  Port Intrusion Control Panel   . . . . . . . . . . . . . . . .   3-29

   3-20.  TFTP Download Panel  . . . . . . . . . . . . . . . . . . . . .   3-31

   3-21.  Xmodem Download Panel  . . . . . . . . . . . . . . . . . . . .   3-33

   3-22.  User Passwords Panel   . . . . . . . . . . . . . . . . . . . .   3-35

   3-23.  Console Lockout Panel  . . . . . . . . . . . . . . . . . . . .   3-37

   3-24.  Segment Statistics Panel   . . . . . . . . . . . . . . . . . .   3-38

   3-25.  Hub Statistics: Hub Selection Panel  . . . . . . . . . . . . .   3-40

   3-26.  Hub Statistics Panel   . . . . . . . . . . . . . . . . . . . .   3-41

   3-27.  Port Statistics: Port Selection Panel  . . . . . . . . . . . .   3-43

   3-28.  Port Statistics Panel  . . . . . . . . . . . . . . . . . . . .   3-44

   3-29.  FEM Port Statistics Panel  . . . . . . . . . . . . . . . . . .   3-46

   3-30.  Front View of the 8225 Showing the LEDs  . . . . . . . . . . .   3-47

   3-31.  A Sample BootP Configuration File  . . . . . . . . . . . . . .   3-55

    4-1.  Example Self-Test Results for Model 001  . . . . . . . . . . . .  4-5

    4-2.  Example Self-Test Results for Model 002 or Model 003   . . . . .  4-6

    4-3.  Removing the Top-Cover Screws  . . . . . . . . . . . . . . . . .  4-8

    4-4.  Back View: Removing the Five Cover Screws  . . . . . . . . . . .  4-8

    4-5.  Disconnect Fan Power Connector   . . . . . . . . . . . . . . . .  4-8

    4-6.  SIMM Removal   . . . . . . . . . . . . . . . . . . . . . . . . .  4-8

    4-7.  SIMM Replacement   . . . . . . . . . . . . . . . . . . . . . . .  4-9

    4-8.  Removing the Top-Cover Screws  . . . . . . . . . . . . . . . . .  4-9

    4-9.  Back View: Removing the Five Cover Screws  . . . . . . . . . . .  4-9





  (C) Copyright IBM Corp. 1996                                              vii





   4-10.  View of Management board and SIMM  . . . . . . . . . . . . . . .  4-9

   4-11.  SIMM Removal   . . . . . . . . . . . . . . . . . . . . . . . .   4-10

   4-12.  SIMM Replacement   . . . . . . . . . . . . . . . . . . . . . .   4-10

   4-13.  Three Fast Expansion Module Types  . . . . . . . . . . . . . .   4-10

   4-14.  Removing the Mounting-Bracket Screws   . . . . . . . . . . . .   4-12

   4-15.  8225 Back View   . . . . . . . . . . . . . . . . . . . . . . .   4-12

   4-16.  Fan Replacement  . . . . . . . . . . . . . . . . . . . . . . .   4-12

   4-17.  Loosen the Knurled Knobs   . . . . . . . . . . . . . . . . . .   4-13

   4-18.  8225 Field-replaceable Parts   . . . . . . . . . . . . . . . .   4-15

    A-1.  Straight-Through UTP Cable (RJ-45 to RJ-45), T568-A  . . . . . .  A-1

    A-2.  Straight-Through UTP Cable (RJ-45 to RJ-45), T568-B  . . . . . .  A-1

    A-3.  Straight-Through STP Cable (RJ-45 to IBM Data Connector)   . . .  A-2

    A-4.  Crossover UTP Cable (RJ-45 to RJ-45), T568-A   . . . . . . . . .  A-2

    A-5.  Crossover UTP Cable (RJ-45 to RJ-45), T568-B   . . . . . . . . .  A-2

    A-6.  Crossover STP Cable (RJ-45 to IBM Data Connector)  . . . . . . .  A-2





  TABLES

  ______





    1-1.  Maximum Segment Lengths for the Supported Fast Ethernet Types     1-8

    1-2.  Noise Emission Characteristics of the 8225   . . . . . . . . .   1-15

    3-1.  Status LED Explanations  . . . . . . . . . . . . . . . . . . .   3-48

    3-2.  Port LED Explanations  . . . . . . . . . . . . . . . . . . . .   3-50

    4-1.  LED Symptom/Fix Table  . . . . . . . . . . . . . . . . . . . . .  4-1

    4-2.  Field-Replaceable Parts List   . . . . . . . . . . . . . . . .   4-15

    4-3.  Features That Can Be Purchased   . . . . . . . . . . . . . . .   4-16

    4-4.  Redundant Power Module Upgrades by Country   . . . . . . . . .   4-17

    4-5.  8225 Power Cords by Country  . . . . . . . . . . . . . . . . .   4-18





  viii  8225 Hub Installation and Planning Guide





                                                                     Tables  ix





  x  8225 Hub Installation and Planning Guide





  SAFETY INFORMATION

  __________________





  DANGER:  Before you begin to install this product, read the safety

  information in Caution: Safety Information--Read This First, SD21-0030.  This

                 ____________________________________________

  booklet describes safe procedures for cabling and plugging in electrical

  equipment.



  VARNING -- LIVSFARA:  Innan du boerjar installera den haer produkten boer du

  laesa saekerhetsinformationen i dokumentet Varning: Saekerhetsfoereskrifter--

                                             __________________________________

  Laes detta foerst, SD21-0030.  Daer beskrivs hur du pa ett saekert saett

  __________________

  ansluter elektrisk utrustning.



  FARE:  For du begynner a installere dette produktet, ma du lese

  sikkerhetsinformasjonen i Advarsel:  Sikkerhetsinformasjon -- Les dette

                            _____________________________________________

  forst, SD21-0030 som beskriver sikkerhetsrutinene for kabling og tilkobling

  _____

  av elektrisk utstyr.



  FARE! For du installerer dette produkt, skal du laese sikkerhedsforskrifterne

  i NB:  Sikkerhedsforskrifter--Laes dette forst SD21-0030.  Vejledningen

    ____________________________________________

  beskriver den fremgangsmade, du skal bruge ved tilslutning af kabler og

  udstyr.



  GEVAAR: Voordat u begint met de installatie van dit produkt, moet u eerst de

  veiligheidsinstructies lezen in de brochure PAS OP!

                                              _______

  Veiligheidsinstructies--Lees dit eerst, SD21-0030.  Hierin wordt beschreven

  _______________________________________

  hoe u electrische apparatuur op een veilige manier moet bekabelen en

  aansluiten.



  GEVAAR  Voordat u begint met het installeren van dit produkt, dient u eerst

  de veiligheidsrichtlijnen te lezen die zijn vermeld in de publikatie Caution:

                                                                       ________

  Safety Information - Read This First, SD21-0030. In dit boekje vindt u

  ____________________________________

  veilige procedures voor het aansluiten van elektrische appratuur.



  VORSICHT:  Bevor mit der Installation des Produktes begonnen wird, die

  Sicherheitshinweise in Achtung: Sicherheitsinformationen--Bitte zuerst lesen,

                         ______________________________________________________

  IBM Form SD21-0030.  Diese Veroeffentlichung beschreibt die

  Sicherheitsvorkehrungen fuer das Verkabeln und AnschlieBen elektrischer

  Geraete.





  DANGER : Avant d'installer le present produit, consultez le livret Attention

                                                                     _________

  : Informations pour la securite -- Lisez-moi d'abord, SD21-0030, qui decrit

  ____________________________________________________

  les procedures a respecter pour effectuer les operations de cablage et

  brancher les equipements electriques en toute securite.





  (C) Copyright IBM Corp. 1996                                               xi





  DANGER: Avant de proceder a l'installation de ce produit, lisez d'abord les

  consignes de securite dans la brochure ATTENTION:  Consignes de securite--A

                                         ____________________________________

  lire au prealable, SD21-0030.  Cette brochure decrit les procedures pour

  __________________

  cabler et connecter les appareils electriques en toute securite.



  PERICOLO: prima di iniziare l'installazione di questo prodotto, leggere le

  informazioni relative alla sicurezza riportate nell'opuscolo Attenzione:

                                                               ___________

  Informazioni di sicurezza -- Prime informazioni da leggere in cui sono

  __________________________________________________________

  descritte le procedure per il cablaggio ed il collegamento di apparecchiature

  elettriche.



  PERIGO:  Antes de iniciar a instalacao deste produto, leia as informacoes de

  seguranca Cuidado:  Informacoes de Seguranca -- Leia Primeiro, SD21-0030.

            ___________________________________________________

  Este documento descreve como efectuar, de um modo seguro, as ligacoes

  electricas dos equipamentos.



  PELIGRO: Antes de empezar a instalar este producto, lea la informacion de

  seguridad en Atencion: Informacion de Seguridad -- Lea Esto Primero,

               _______________________________________________________

  SD21-0030.  Este documento describe los procedimientos de seguridad para

  cablear y enchufar equipos electricos.



  PERIGO:  Antes de comecar a instalar este produto, leia as informacoes de

  seguranca contidas em Cuidado:  Informacoes Sobre Seguranca--Leia Isto

                        ________________________________________________

  Primeiro, SD21-0030.  Esse folheto descreve procedimentos de seguranca para a

  _________

  instalacao de cabos e conexoes em equipamentos eletricos.



  VAARA: Ennen kuin aloitat taemaen tuotteen asennuksen, lue julkaisussa

  Varoitus: Turvaohjeet--Lue taemae ensin, SD21-0030, olevat turvaohjeet.

  _______________________________________

  Taessae kirjasessa on ohjeet siitae, miten saehkoelaitteet kaapeloidaan ja

  kytketaeaen turvallisesti.





   VIGYAZAT: Mielott megkezdi a berendezes uezembe helyezeset, olvassa el a

  Caution: Safety Information-- Read This First, SD21-0030 koenyvecskeben leirt

  ______________________________________________

  biztonsagi informaciokat.  Ez a koenyv leirja, milyen biztonsagi

  intezkedeseket kell megtenni az elektromos berendezes huzalozasakor illetve

  csatlakoztatasakor.





  xii  8225 Hub Installation and Planning Guide





  LITHIUM BATTERY



  The IBM 8225 Fast Ethernet Stackable Hub contains a non-replaceable lithium

  battery that, if disposed of improperly, can cause a fire, an explosion, or a

  severe burn.  At the end of the life of this machine, return the IBM 8225

  Fast Ethernet Stackable Hub to IBM or dispose of it according to local

  regulations.





                                                       Safety Information  xiii





  xiv  8225 Hub Installation and Planning Guide





  ABOUT THIS MANUAL

  _________________





  This manual describes the features of the IBM 8225 Fast Ethernet Stackable

  Hub (8225) and explains how to plan for 8225s in your new or existing

  network, how to install 8225s, and how to administer 8225s.





  WHO SHOULD READ THIS MANUAL

  ___________________________



  If you are a network planner, a hardware installer, a network administrator,

  or a service engineer, this manual will help you in your work with 8225s.





  HOW THIS MANUAL IS ORGANIZED

  ____________________________



  This manual contains the following sections:



  o   Chapter 1, "Introduction and Planning"



      Describes the features of the 8225 and provides information you will need

      to integrate 8225s into your new or existing network.



  o   Chapter 2, "Installing the 8225"



      Provides step-by-step instructions for installing the 8225 and its

      features.



  o   Chapter 3, "8225 Administration"



      Helps you determine which administrative actions are available to your

      8225 installation, and then gives instructions for performing the

      actions.



  o   Chapter 4, "Troubleshooting and Service"



      Gives the procedure for hot-swapping 8225s, provides step-by-step

      instructions on installing all customer-replaceable parts, and lists the

      available replacement parts.  This chapter also gives steps for

      troubleshooting and for preparing to make a call to IBM Service.



  o   Appendix A, "Cable Pinout Diagrams"



      Provides pinout diagrams for the cables and connectors that the 8225

      accepts.





  (C) Copyright IBM Corp. 1996                                               xv





  o   Appendix B, "The IBM 8225 Management Information Base"



      Lists the IBM 8225 private MIB.



  o   Appendix C, "Product Warranty and Notices"



      Provides emissions notices and a list of trademarks, and a statement of

      warranty.



  o   Glossary and Index



      Give definitions of the acronyms and key terms used in this manual, and

      help you to find the information you are looking for.





  TECHNICAL AND PLANNING REFERENCES

  _________________________________



  You may find these publications helpful in planning your network or in

  answering detailed technical questions.



  o   ISO/IEC 8802-3: 1996 ANSI/IEEE Std 802.3 1996 edition Information

      Technology - Local and Metropolitan Area Networks - Part 3: Carrier Sense

                                                                  _____________

      Multiple Access with Collision Detection (CSMA/CD) Access Method and

      ____________________________________________________________________

      Physical Layer Specifications.

      _____________________________



  o   IEEE Std. 802.3u-1995 (Supplement to ISO/IEC 8802-3: 1993).  IEEE

      Standards for Local and Metropolitan Area Networks: (Supplement to

      Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access

      _______________________________________________________________________

      Method and Physical Layer Specifications, ANSI/IEEE Standard 802.3, 1993

      ________________________________________

      edition).  Media Access Control (MAC) Parameters, Physical Layer, Medium

      Attachment Units, and Repeater for 100 Mb/s Operation, Type 100BASE-T

      (Clauses 21-30).



  o   Commercial Building Telecommunications Cabling Standard, ANSI/TIA/EIA

      _______________________________________________________

      Standard 568-A.



  o   Commercial Building Standard for Telecommunications Pathways and Spaces,

      _______________________________________________________________________

      ANSI/EIA/TIA Standard 569.



  o   Administration Standard for the Telecommunications Infrastructure of

      ____________________________________________________________________

      Commercial Buildings, ANSI/TIA/EIA Standard 606.

      ____________________



  o   Grounding and Bonding Requirements for Telecommunications in Commercial

      _______________________________________________________________________

      Buildings, ANSI/TIA/EIA Standard 607.

      _________



  o   Generic Cabling for Customer Premises Cabling, ISO/IEC International

      _____________________________________________

      Standard 11801.



  If you intend to use STP cabling, refer to:



  o   IBM Cabling System Planning and Installation Guide, GA27-3361.

      __________________________________________________



  If you intend to use optical fiber cabling, refer to:





  xvi  8225 Hub Installation and Planning Guide





  o   IBM Cabling System Optical Fiber Planning and Installation Guide,

      ________________________________________________________________

      GA27-3943.





                                                        About This Manual  xvii





  xviii  8225 Hub Installation and Planning Guide





  CHAPTER 1.  INTRODUCTION AND PLANNING

  _____________________________________





  This chapter describes the features of the IBM 8225 Fast Ethernet Stackable

  Hub (8225) and provides information you will need to integrate 8225s into

  your new or existing network.





  THE 8225

  ________



  The 8225 is a stackable Fast Ethernet hub that comes in three models:



  o   Model 001, which incorporates twelve 100BASE-TX Fast Ethernet ports

      supporting the IEEE 802.3u 100BASE-TX specification over category 5,

      100-ohm UTP or ScTP cabling or 150-ohm STP-A cabling.  Each 8225 can

      accommodate an optional Fast Expansion Module, providing connectivity to

      10BASE-T/100BASE-TX, 100BASE-T4, or 100BASE-FX networks, offering maximum

      flexibility in system connectivity.



  o   Model 002, which provides all of the connectivity features of Model 001

      and includes an SNMP agent that permits management of one or more Model

      001s.



  o   Model 003, which incorporates all of the connectivity and management

      features of Model 002 plus a remote monitoring (RMON) agent.





  Figure  1-1. Front View of the IBM 8225 Fast Ethernet Stackable Hub





  FEATURES



  All models of the 8225 include these features:



  o   Twelve 100BASE-TX ports with shielded RJ-45 connectors that support the

      IEEE 802.3u 100BASE-TX specification.



      All of the 100BASE-TX ports are Medium Dependent Interface-X (MDI-X)

      ports.  These ports perform an internal crossover function that allows

      easy connection to other devices using standard cables.



      The twelfth port is also accessible without the internal crossover

      function, at the port marked "12-MDI," permitting connection to devices

      having an internal crossover function using standard straight-through

      cables.



  o   Front panel slot to accommodate an optional, slide-in Fast Expansion

      Module for connecting to 10BASE-T/100BASE-TX, 100BASE-T4, or 100BASE-FX

      networks.



  o   Three independent 100-Mbps Fast Ethernet backplanes.





  (C) Copyright IBM Corp. 1996                                              1-1





  o   Rear panel slot to accommodate an optional redundant power module.



  o   EtherWatch LED bars to display hub utilization and collision rates.



  o   Repeating of all Ethernet frame formats.



  o   Auto-partitioning and reconnect of ports whose attached devices create

      excessive collisions.



  o   Jabber protection by disabling a port that receives 64 KB of continuous

      transmission and re-enabling the port when the condition clears.



  o   A serial management port for configuring the 8225.,



  o   LEDs that indicate link status, activity, and partition status at the

      port level.



  o   Storage of vital configuration data in nonvolatile memory.



  o   The 8225 can be configured to issue warnings or disable a port

      automatically when frames are received at that port from any MAC address

      other than the one authorized to send to that port.



  o   Can be mounted in an EIA standard 19-inch rack (mounting brackets

      included).  The 8225 can also be placed on a tabletop or shelf.



  o   Up to 6 8225s in any combination of models can be configured in a stack.



  o   Field upgrades; Model 001 can be upgraded to Model 002 or 003, and Model

      002 can be upgraded to Model 003.



  Model 002 provides these additional features to the entire stack:



  o   An SNMP agent that provides support for these Management Information

      Bases (MIBs):



      -   RFC 1213 (MIB II)

      -   RFC 1516 (Ethernet repeater MIB)

      -   RFC 1643 (Ethernet MIB)

      -   Novell Hub MIB

      -   IBM private MIB (listed in Appendix B).



  o   A serial management port for configuring the 8225, upgrading microcode

      out-of-band, and out-of-band management.



  o   A user interface, accessible by means of VT100 terminal emulation

      (in-band) or Telnet (out-of-band), for issuing management commands and

      retrieving information and statistics concerning individual 8225s,

      backplanes, or the entire stack.



  o   SNMP manageability over IP networks using the following frame formats:



          Ethernet Version 2

          Ethernet SNAP.





  1-2  8225 Hub Installation and Planning Guide





  o   SNMP manageability over IPX(**) networks using the following frame

      formats:



          Ethernet Version 2

          IEEE 802.3 (raw)

          IEEE 802.2

          IEEE 802.2 SNAP.



  o   Manageability using optional applications and platforms, such as IBM

      Nways Manager for Windows(**), Nways Campus Manager LAN for AIX(**), and

      Nways Campus LAN for HP/UX(**).



  o   For IP networks:



      -   SNMP manageability over a Serial Line Internet Protocol (SLIP) link

          to the Management port



      -   Support for the Bootstrap Protocol (BootP) for configuring and

          upgrading the microcode of any 8225 Model 002 or Model 003



      -   Support for TFTP for upgrading the microcode of any Model 002 or

          Model 003



      -   Telnet support.



  o   For IPX networks, Novell Hub Management Interface (HMI) compliance.



  Model 003 provides these additional features:



  o   All connectivity features, plus all management features of Model 002.  In

      addition, Model 003 incorporates an RMON agent providing the functions

      defined in RFC-1757.





  STACKS



  A stack is formed when up to six 8225s are connected together.  To create a

    _____

  stack, two or more 8225s must be interconnected using optional, 8-inch, hub

  interconnect cables.  For more information on interconnecting 8225s, see

  "Interconnecting 8225s" on page 1-4 and "Connecting Hub Interconnect Cables"

  on page 2-5.



  A managed stack is made up of any combination of Model 001s, Model 002s, and

    _______

  Model 003s, as long as at least one Model 002 or 003 is included in the

  stack.  In stacks with only one Model 002 or Model 003, that unit will

  automatically be designated the primary management agent, regardless of its

  physical position in the stack.  For stacks having more than one Model 002 or

  Model 003, the following rules are observed:



  o   The unit that is physically nearest the top of the stack will

      automatically be designated the primary management agent and the

      remainder will be designated backup management agents in order of their

      physical position in the stack.





                                     Chapter 1.  Introduction and Planning  1-3





  o   Whenever a Model 003 is present, it will be designated the management

      unit, even if its physical position in the stack is lower than a Model

      002 in the same stack.



  o   In a stack with more than one management unit, in case of the failure of

      the primary management agent, the management agent that is physically

      next lowest in position in the stack will automatically assume primary

      management agent responsibility.



  For more information on managed stacks, see "Understanding Managed Stacks" on

  page 1-4.



  An unmanaged stack is made up exclusively of Model 001s.

     _________



  There are four ways to manage the 8225:



      Using a local VT100 terminal emulator out-of-band

      Using SNMP over SLIP out-of-band

      Using Telnet over an IP network connection in-band

      Using SNMP over an IP or IPX network connection in-band.





  INTERCONNECTING 8225S



  You can increase the number of ports available to end stations by adding

  8225s to a network, interconnecting them using the Fast Expansion Module or

  the hub interconnection cable.  When the hub interconnection cable is used,

  management information can be passed between hubs, enabling management of an

  entire stack.



  Cabling and connector requirements for the Fast Expansion Modules are given

  in "Cabling Requirements for the Fast Expansion Modules" on page 1-9.





  UNDERSTANDING MANAGED STACKS

  ____________________________



  This section describes how 8225s in a stack communicate with one another, the

  effects of segmenting 8225s within a stack, and how to link segmented 8225s.





  INTER-8225 COMMUNICATIONS IN MANAGED STACKS



  In an 8225 stack there are three 100-Mbps backplanes and one management

  backplane (or bus).  This management backplane is used by the management

  agents in Model 002 and Model 003 to retrieve management information from all

  units in the stack.



  Regardless of the segmentation status of any 8225 or its position in the

  backplane, the hub retains its full management capability and the ability to

  access a wide range of information concerning all 8225s in a stack.



  Using any of the management methods mentioned above, you can perform any of

  the following actions on any 8225 in a stack while attached to the Model 002





  1-4  8225 Hub Installation and Planning Guide





  or Model 003 that is currently the primary management hub as indicated by the

  Prim LED:



  o   Restart the system

  o   Display system information

  o   Issue management commands to any hub in the stack

      -   SNMP configuration

      -   Port intrusion control

      -   Segment configuration

      -   Hub configuration

      -   TFTP or XMODEM upgrades of microcode

      -   Port configuration

      -   User passwords

      -   Backup ports

      -   Console lockout

  o   Collect statistics at the port, hub, or segment level.



  In addition, the management functions as defined in RFC-1757 can be performed

  from a Model 003.  The RMON agent in the Model 003 implements the SNMP

  protocol, so it can be managed by any SNMP-based network management system.





  WHY SEGMENT 8225S WITHIN A STACK?



  Three major uses of segmentation are to improve performance, to troubleshoot,

  and to isolate groups of users.  This section details those uses.

  "Segmenting 8225s within a Stack" on page 1-6 explains how segmenting is

  controlled.





  Improving Performance



  In an unsegmented stack, all of the 8225s remain in the factory-default

  segmentation status and are assigned to Backplane 1.  This configuration

  represents a single collision domain.  All devices attached anywhere in such

  a stack see all of the Ethernet frames generated anywhere in the stack, thus

  they share a single 100-Mbps bandwidth.



  As network traffic increases, excessive collisions can cause network

  performance to slow.  You can improve performance by segmenting one or more

  8225s in the stack to another backplane or by isolating them completely from

  any backplane.  Each backplane or isolated 8225 is a separate collision

  domain, thus providing multiple 100-Mbps bandwidths.



  To enable segmented 8225s to communicate with the rest of the stack,

  interconnect them using the Fast Expansion Module or a bridge, router or

  switch.  See "Linking Segmented 8225s" on page 1-6 for more detail.





                                     Chapter 1.  Introduction and Planning  1-5





  Troubleshooting



  Segmentation can help you isolate areas of your network that are experiencing

  problems.  You can segment 8225s one at a time while monitoring stack

  performance.  This technique can help you localize a problem area to the

  devices attached to a specific 8225.





  Isolating User Groups



  You might have users in your network who have no need for connectivity

  outside their department or workgroup.  By placing their workstations on a

  separate backplane, you can limit their network access and isolate their

  bandwidth demands from the remainder of the network while retaining

  management of the 8225s.





  SEGMENTING 8225S WITHIN A STACK



  You can use a VT100 terminal emulator or an SNMP management application to

  connect an 8225 to any of the three backplanes or to isolate it completely

  from the stack.  When this is done, the 8225 is said to have been segmented.

                                                                    _________

  Even though one or more hubs have been logically removed from the Fast

  Ethernet bus, the management bus permits the management information described

  in "Inter-8225 Communications in Managed Stacks" on page 1-4 to be passed.





  LINKING SEGMENTED 8225S



  When you segment an 8225, you cause it either to be connected to another

  backplane or to be isolated completely from the rest of the stack.  Devices

  connected to 8225s in any backplane are able to communicate with all other

  devices connected to any 8225 in that backplane.  Each backplane is a

  separate collision domain, as are any 8225s that have been isolated.



  One easily implemented method of interconnecting multiple backplanes is by

  means of the 10BASE-T/100BASE-TX Fast Expansion Module.  You can connect a

  10BASE-T/100BASE-TX Fast Expansion Module in one 8225 to a port in an 8225

  that is in a different backplane.



  You can also interconnect 8225s in different backplanes using a bridge,

  router, or Fast Ethernet switch.



  In order to manage a stack of 8225s:



  o   The 8225 you want to manage must be a Model 002 or Model 003, or it must

      be connected in a stack that includes at least one Model 002 or Model

      003, and

           ___



  o   There must be a Fast Ethernet link between the 8225 to which your

      management workstation is attached and the Model 002 or Model 003 that is

      serving as the primary management unit for the stack.





  1-6  8225 Hub Installation and Planning Guide





  ASSIGNING BACKUP PORTS

  ______________________



  A managed stack provides the option of making redundant connections to

  network-critical devices, such as servers or LAN switches.  You can use the

  VT100 interface or any SNMP-based network management application to assign

  backup ports.  Any port in an 8225, including those on Fast Expansion

  Modules, can be used as a backup for any other port.  A stack can have up to

  18 pairs of redundant links.  The primary and backup ports can be on separate

  backplanes.  Note that you must establish two physical connections to the

  desired device.



  When a backup port has been configured and activated, the primary port will

  be enabled and the backup port will be disabled to prevent looping.  Before a

  backup port is in operation, the Link/Activity LED will indicate activity on

  the PRIMARY port and the Partition LED for the BACKUP port will be on.



  When the primary port is disabled, the secondary port will  be enabled to

  keep the device connected.  When you reset the backup function, the secondary

  port will be disabled and the primary port will be re-enabled.  When a backup

  port is in operation, the Link/Activity LED will indicate activity on the

  BACKUP port and the Partition LED for the PRIMARY port will be on.





                                     Chapter 1.  Introduction and Planning  1-7





  FAST ETHERNET PLANNING

  ______________________



  The size of each Ethernet collision domain you create is limited by these

  factors:



  o   The cable length restrictions unique to each type of segment (that is,

      for 100BASE-TX, 100BASE-T4, and so on)



  o   If you will use optical fiber links:



      -   The limit of 2000 m (6561 ft) for full-duplex connection of any two

          devices in one collision domain



      -   The limit of 412 m (1352 ft) for half-duplex connection of any two

          devices in one collision domain



  These factors are explained in greater detail in the following sections.





  MAXIMUM SEGMENT LENGTHS



  A Fast Ethernet segment is the total length of cable between either two

  repeaters or between a repeater and an attached device.  The different types

  of Fast Ethernet supported by the 8225 place different limitations on segment

  lengths.



  +---------------------------------------------------------------------------+

  | Table  1-1. Maximum Segment Lengths for the Supported Fast Ethernet Types |

  +------------------------+--------------------------------------------------+

  | FAST ETHERNET TYPE     | MAXIMUM SEGMENT LENGTH                           |

  +------------------------+--------------------------------------------------+

  | 100BASE-TX             | 100 m (328 ft)                                   |

  | or                     |                                                  |

  | 10BASE-T               |                                                  |

  +------------------------+--------------------------------------------------+

  | 100BASE-T4             | 100 m (328 ft)                                   |

  +------------------------+--------------------------------------------------+

  | 100BASE-FX             | 412 m (1352 ft)                                  |

  |                        | Half duplex                                      |

  |                        |                                                  |

  |                        | 2000 m (6561 ft)                                 |

  |                        | Full duplex                                      |

  +------------------------+--------------------------------------------------+





  CABLES AND CONNECTORS

  _____________________



  Cable and connector requirements differ depending on the port to which each

  cable connects.



  UTP and STP cable pinouts can be found in Appendix A, "Cable Pinout Diagrams"

  on page A-1.





  1-8  8225 Hub Installation and Planning Guide





  CABLING REQUIREMENTS FOR 100BASE-TX PORTS



  This section describes the cables required to connect the 8225's 100BASE-TX

  ports to network devices such as workstations and servers.



  Problems with LANs are frequently due to incorrect cable selection or poor

  cabling practices.  You should select components carefully and inspect

  installations for good installation practices so that your 100BASE-TX network

  will operate as intended.



  Your 100BASE-TX network will operate correctly on category 5, 100-ohm UTP or

  ScTP cable and connecting hardware as specified in the ANSI/TIA/EIA 568-A or

  CSA T529 standards.  Your 100BASE-TX network will also operate on 150-ohm

  STP-A cable and components as specified in these standards.  In addition,

  your network will operate on IBM Cabling System types 1, 6, and 9, 150-ohm

  STP or STP-A cable.  If you are using 150-ohm cabling systems,

  impedance-matching devices must be used in conjunction with the cable.



  Your 100BASE-TX network will also operate correctly on category 5, 100- and

  120-ohm, balanced, shielded or unshielded cables and components as specified

  in the ISO/IEC 11801 standard.  It will also operate on 150-ohm, balanced,

  shielded cables and components as specified in the ISO/IEC standard.  In

  addition, your network will operate on any link that meets the specifications

  of a Class D link as specified in the standard; this includes IBM Cabling

  System type 9 STP cabling.  If you are using 120- or 150-ohm cabling systems,

  impedance-matching devices must be used in conjunction with the cable.



  All devices connected to the cables must be grounded.



  Do not use telephone extension cables in 100BASE-TX networks.  The wire pairs

  in those cables are not twisted and the cable does not meet other

  requirements for use in a 100BASE-TX network.





  Applicable Cabling Standards



  In the United States, the ANSI/TIA/EIA 568-A Commercial Building

                            ______________________________________

  Telecommunications Standard has been widely adopted.  The Canadian Standards

  ___________________________

  Association has also participated in the development of this standard and

  issues a parallel document known as T529; the most current version of this

                                      ____

  document is dated 1995.  Many other countries use ISO/IEC 11801 Information

                                                    _________________________

  technology - Generic cabling for customer premises.

  __________________________________________________



  It is good practice to use only those components that have been certified by

  an independent testing laboratory as meeting one or more of the standards.

  In the case of IBM Cabling System types 1, 6, and 9 cable, certification

  should be either to the IBM specification or to the applicable standard.





  CABLING REQUIREMENTS FOR THE FAST EXPANSION MODULES



  Cable and connector requirements differ depending on the Fast Expansion

  Module you use.





                                     Chapter 1.  Introduction and Planning  1-9





  10BASE-T/100BASE-TX Fast Expansion Module



  This Fast Expansion Module incorporates two RJ-45 connectors.  For connection

  to 100BASE-TX networks, you should use cables meeting the requirements

  outlined in "Cabling Requirements for 100BASE-TX Ports." For connection to

  10BASE-T networks, you can use category 3 or category 4 cables in addition to

  those specified for use in 100BASE-TX networks.





  100BASE-T4 Fast Expansion Module



  This Fast Expansion Module incorporates two RJ-45 connectors.  You can use

  category 3, 4, or 5 100-ohm UTP or ScTP cables.





  100BASE-FX Fast Expansion Module



  This Fast Expansion Module incorporates two ST connectors.  Use

  62.5/125-micron multimode optical fiber that meets the specifications in

  TIA/EIA 568A or ISO/IEC 11801.  The maximum length of optical fiber cable

  between devices should not exceed 2000 meters (6561 ft) if the link is being

  operated in full-duplex mode.





  CABLING REQUIREMENTS FOR THE MANAGEMENT PORT



  The Management port is a standard DB-9 male connector that provides an

  EIA/TIA 232-E (was RS 232-C) serial interface.  You can connect locally, with

  a null-modem cable, or remotely, over telephone lines, using serial cables

  and modems at each end.  Once connected, you can manage the 8225 and upgrade

  microcode.  This is sometimes called out-of-band management.

                                       ___________



  You can make a null-modem cable by connecting a null-modem adapter to a

  standard serial cable.





  PROTECTED VITAL CONFIGURATION DATA

  __________________________________



  The following configuration information is stored in nonvolatile memory and

  will survive a power outage:



  o   System name and location

  o   Segment to which the hub is connected

  o   ID number assigned to the hub

  o   Password assigned to the hub



  The above are retained for all models.  In addition, the following

  information, arranged by function, is retained for Model 002 and Model 003:



  o   SYS group



          MIB2 system contact group

          MIB2 system name

          MIB2 system location





  1-10  8225 Hub Installation and Planning Guide





  o   SNMP group



          SNMP group authentication traps flag



  o   RPTR group



          Hub MIB port administration status



  o   Community group



          Community name of IBM 8225 MIB

          Community access mode

          Community status



  o   IP trap manager group



          IP trap manager community

          IP address of the IP trap manager

          IP trap manager status



  o   IPX trap manager group



          IPX trap manager community

          IPX address of the IPX trap manager

          IPX trap manager status



  o   Download group



          IP address of TFTP download server

          File name to download

          Execution mode of downloaded code

          Protocol to be enabled



  o   Segment group



          Segment IP address

          Segment netmask

          Segment gateway IP address

          Segment SLIP address

          Preferred IPX frame type for the segment

          Internal IPX network of the segment

          SAP broadcast interval for the segment

          Segment name



  o   Hub group



          Management agent MAC address

          Agent segment number

          Agent bootup option



  o   Port group



          Port names





                                    Chapter 1.  Introduction and Planning  1-11





  o   FEM group



          Fast Expansion Module port status

          Fast Expansion Module port duplex mode

          Fast Expansion Module port back pressure mode

          Fast Expansion Module port forwarding mode

          Fast Expansion Module port name



  o   Backup group



          Primary port hub number

          Primary port port number

          Secondary port hub number

          Secondary port port number

          Backup and secondary port pair status



  o   Security group



          Hub number of port

          Port number of port

          MAC address authorized to send to port

          Action to be taken when port is intruded



  o   User table group



          Logon IDs

          Passwords for logon IDs



  o   Console lock group



          Console lock status

          Console lockout delay





  1-12  8225 Hub Installation and Planning Guide





  POWER REQUIREMENTS AND CHARACTERISTICS

  ______________________________________



  The connector for the power cord is on the rear panel of the 8225 and is

  integral to the power module.  If you plan to use an optional redundant power

  module, you will need two power cords and two connections.  In order to

  ensure maximum redundancy, the connections should be made to outlets on

  separate ac circuits.



  NOTE:   For safety reasons, it is recommended that the connection be made

  first to the 8225, then to the ac outlet..



  The 8225's internal, auto-ranging power module adapts to voltages between 100

  and 240 V ac at frequencies of 50 to 60 Hz, 3 Hz.



  Following are characteristics of the 8225's power module:



  POWER USAGE (MAXIMUM)  73 watts @ 249 BTU per hour (Model 001)

                         102 watts @ 348 BTU per hour (Model 002)

                         106 watts @ 362 BTU per hour (Model 003)

                         17 watts @ 58 BTU per hour (Expansion module)

  LINE CURRENT (MAXIMUM) 1.6 A @ 120 V ac; 0.8 A @ 240 V ac

  KVA (WORST CASE)       0.16 kVA





  PHYSICAL CHARACTERISTICS

  ________________________



  This section gives the dimensions and weight of an 8225.



  WIDTH                  440 mm (17.3 in.)

  DEPTH                  320 mm (12.6 in.)

  HEIGHT                 65 mm (2.6 in.)

  WEIGHT                 5.8 kg (13 lb) Model 001

                         6.3 kg (14 lb) Model 002 and Model 003

                         0.16 kg (0.35 lb) Fast Expansion Module

                         1.2 kg (2.6 lb) Redundant power module





                                    Chapter 1.  Introduction and Planning  1-13





  OPERATING ENVIRONMENT

  _____________________



  This section specifies the physical environment required by 8225s.





  SPACE REQUIREMENTS



  If you will connect multiple 8225s in a stack, be sure that you have enough

  space available in your rack or shelf for the number of hubs that will be

  stacked together.  Keep in mind that the length of a hub interconnection

  cable is fixed at 203 mm (8 in.).



  Allow at least 51 mm (2 in.) at the sides of the 8225 for air circulation and

  cable connections.  A minimum of 305 mm (12 in.) of clearance at the rear of

  the 8225 is required in order to insert and remove the power modules.  Leave

  eight inches in front for viewing the LEDs, installing Fast Expansion

  Modules, connecting cables, and for air circulation.





  ENVIRONMENTAL REQUIREMENTS



  POWER ON TEMPERATURE   10&degree. to 40&degree.C

                         (50&degree. to 104&degree.F)

  RELATIVE HUMIDITY      85% maximum

  STORAGE TEMPERATURE    -25&degree. to 70&degree.C

                         (-13&degree. to 158&degree.F)





  ACOUSTIC CHARACTERISTICS

  ________________________



  Table 1-2 on page 1-15 is a declaration of the 8225's noise emission

  characteristics.





  1-14  8225 Hub Installation and Planning Guide





  +---------------------------------------------------------------------------+

  | Table  1-2. Noise Emission Characteristics of the 8225                    |

  +---------+---------------+----------------+----------------+---------------+

  |         |               |     LWAd     |     LpAm     |   <LpA>m  |

  |         |               +--------+-------+-------+--------+-------+-------+

  |   Type  |  Description  | Operat-| Idling| Operat| Idling | Operat| Idling|

  |         |               |   ing  | (bels)|  ing  |  (dB)  |  ing  |  (dB) |

  |         |               | (bels) |       |  (dB) |        |  (dB) |       |

  +---------+---------------+--------+-------+-------+--------+-------+-------+

  |         |      Fast     |        |       |       |        |       |       |

  |   8225  |    Ethernet   |   6.3  |  6.3  |  N/A  |   N/A  |   48  |   48  |

  |         |   Stackable   |        |       |       |        |       |       |

  |         |      Hub      |        |       |       |        |       |       |

  +---------+---------------+--------+-------+-------+--------+-------+-------+

  |                                                                           |

  +---------------------------------------------------------------------------+

  | Notes:                                                                    |

  +---------------------------------------------------------------------------+

  |                                                                           |

  +---------------------------------------------------------------------------+

  | LWAd    is the declared sound power emission level for a production     |

  |           series of machines.                                             |

  |                                                                           |

  | LpAm    is the mean value of the sound pressure emission levels at the  |

  |           operator position (if any) for a production series of machines. |

  |                                                                           |

  | <LpA>m is the mean value of the space-averaged sound pressure         |

  |           emission levels at the one-meter position for a production      |

  |           series of machines.                                             |

  |                                                                           |

  | N/A       not applicable (no operator position).  operator position.)     |

  +---------------------------------------------------------------------------+

  |                                                                           |

  +---------------------------------------------------------------------------+

  | All measurements made in accordance with ISO 7779 and reported in         |

  | conformance with ISO 9296.  These are preliminary values and are subject  |

  | to change.  The final values will be available from IBM Manufacturing for |

  | production machines.                                                      |

  +---------------------------------------------------------------------------+





                                    Chapter 1.  Introduction and Planning  1-15





  DOCUMENTING YOUR INSTALLATION

  _____________________________



  It is always a good idea to maintain charts or other documentation that

  pinpoint key aspects of your installation.  By doing this, you will make your

  tasks in such areas as system expansion, reconfiguration, or troubleshooting

  easier to perform.





  RACK DOCUMENT



  You should document all components installed in each rack in your

  establishment.  The larger the organization, the more useful this can be.



  Create a rack inventory document for each of the racks where you will be

  installing components.  Indicate the location of each component in this

  document.  Include the unit ID and model number of each component.





  STACK DOCUMENT



  You should document each 8225 stack.  Retain this document as a record of

  which IP address has been assigned to each stack or individual 8225, each

  8225's unit ID, and the location of each 8225.





  SETUP AND CABLING DOCUMENT



  A setup and cabling diagram can be used to indicate to the installer how and

  where to mount the 8225 and how to connect the appropriate cables to it.



  Include enough building and location information to enable the installer to

  find where to install the 8225.  Include the 8225's backplane location, unit

  ID, and IP or IPX address.



  Indicate whether a Fast Expansion Module should be installed and, if so, the

  type (that is, 10BASE-T/100BASE-TX, 100BASE-T4, or 100BASE-FX).



  For each port, record an identifier for the device at the other end of the

  cable.  Include information such as the device's MAC address and physical

  location.  Record the identifier for the port to which the installer should

  connect the cable from the 8225's port.  If the 8225 is to be installed in a

  wiring closet, indicate that the installer should connect a patch cable from

  a port in the 8225 to a port in a patch panel.





  LOCATOR DOCUMENT



  You should maintain information that enables you to relate adapter addresses

  to their physical location and device.  This information is useful for

  problem determination and should be kept current, especially in larger

  installations.



  Each device that attaches to an 8225 is known to the network by its adapter

  address.  This address can be one of two types: universally administered or





  1-16  8225 Hub Installation and Planning Guide





  locally administered.  See the adapter's documentation to learn how to

  determine the address of a particular adapter.



  Record adapter and hub addresses of all devices in the network in numerical

  order.  Record the physical locations of all devices by building and room

  number.



  In addition to recording the device identification, you should also indicate

  such functions as hubs, bridges, print servers, file servers, gateways, and

  switches.





                                    Chapter 1.  Introduction and Planning  1-17





  1-18  8225 Hub Installation and Planning Guide





  CHAPTER 2.  INSTALLING THE 8225

  _______________________________





  Before installing the IBM 8225 Fast Ethernet Stackable Hub, be sure to read

  "Safety Information" on page xi, the information in "Notices" on page C-3,

  and "Electronic Emission Notices" on page C-4.



  This chapter provides step-by-step instructions for installing the 8225.  It

  also explains how to install the optional redundant power module and the

  optional Fast Expansion Module.





  BEFORE YOU BEGIN

  ________________



  1.  EXAMINE THE CONTENTS OF THE PACKAGE.



      Along with this manual, the 8225 package should contain:



      o   The 8225 with mounting brackets attached

      o   A cable management bracket

      o   A power cord

      o   A safety manual



      If any item is missing or damaged, contact your place of purchase.



  2.  GATHER THE OTHER MATERIALS YOU WILL NEED:



      o   Network documentation identifying devices and specifying port

          connections

      o   And, if you will be rack-mounting the 8225

          -   Four rack-mounting screws that are appropriate for your rack

          -   A screwdriver that is appropriate for your rack-mounting screws





  SETUP

  _____



  Refer to your network documentation for instructions about whether to

  rack-mount or surface-mount the 8225





  RACK-MOUNTING THE 8225



  1.  If you will be installing an optional, redundant power module, go to

      "Installing the Optional Redundant Power Module" on page 2-3 and complete

      that process before continuing.



  2.  Using a screwdriver, remove the four screws (two on each side) that

      attach the mounting brackets to the sides of the 8225.  Do not remove the

      center screw--you should remove only the screws nearest the front and

      back of the case.





  (C) Copyright IBM Corp. 1996                                              2-1





  3.  Rotate the brackets and reattach them as shown in Figure 2-1 on page 2-2.





  Figure  2-1. Rotating the Rack-Mounting Brackets



  4.  Refer to your network documentation to determine where in the rack to

      mount the 8225.



  5.  Gather the rack-mounting screws (not provided) and the cable management

      bracket and place them within reach.



  6.  Hold the 8225 in position in the rack and start the lower of the two

      screws that will secure the left bracket.

                                  ____



  7.  On the right side, align the lower screw holes in the mounting bracket

             _____

      and the cable management bracket with the correct hole of the rack and

      then start the screw as shown in Figure 2-2.





  Figure  2-2. Attaching the Cable Management Bracket



  8.  Tighten the screws on each side.



  9.  If you are connecting multiple 8225s in a stack, refer to

      "Interconnecting 8225s" on page 1-4.



  10. If you are installing a Fast Expansion Module, continue with the

      instructions under "Installing a Fast Expansion Module" on page 2-4.  If

      you are not installing this feature, continue with the instructions under

      "Installing and Routing Cables" on page 2-4.





  SURFACE-MOUNTING THE 8225



  1.  If you will be installing an optional, redundant power module, go to

      "Installing the Optional Redundant Power Module" on page 2-3 and complete

      that process before continuing.



  2.  Place the 8225 on a flat, horizontal surface where it is to be used.  The

      8225 is not designed for vertical mounting.



  3.  If you are connecting multiple 8225s in a stack, refer to

      "Interconnecting 8225s" on page 1-4.



  4.  If you are installing a Fast Expansion Module, continue with the

      instructions under "Installing a Fast Expansion Module" on page 2-4.  If

      not, continue with the instructions under "Installing and Routing Cables"

      on page 2-4.





  2-2  8225 Hub Installation and Planning Guide





  INSTALLING THE OPTIONAL REDUNDANT POWER MODULE



  To install the optional redundant power module, use the instructions that

  follow.  If you are not installing this feature, go to "Installing a Fast

  Expansion Module" on page 2-4.



  The power module slots are located on the back of the 8225.



  1.  Loosen the two knurled knobs on the redundant power module slot

      cover-plate on the back of the 8225 by turning them counterclockwise.

      Remove the cover-plate and retain it so that you can locate it in the

      future, should you need to replace it in the 8225.  If a power module is

      removed from the 8225, you should always replace the cover plate to

      ensure proper cooling.  Refer to Figure 2-3.





  Figure  2-3. Loosen the Knurled Knobs.



  2.  Insert the power module, ensuring that the module slides through the

      guides until the connector is firmly seated.



  3.  Tighten the two knurled knobs on the power module by turning them

      clockwise until they are securely attached to the 8225's frame.



  4.  If you are installing a Fast Expansion Module, continue with the

      instructions under "Installing a Fast Expansion Module" on page 2-4.  If

      you are not installing this feature, continue with the instructions under

      "Installing and Routing Cables" on page 2-4.





                                           Chapter 2.  Installing the 8225  2-3





  INSTALLING A FAST EXPANSION MODULE



  The types of Fast Expansion Module are illustrated in Figure 4-13 on

  page 4-10.  If you are installing an optional Fast Expansion Module, use the

  instructions which follow.  If you are not installing this feature, go to

  "Installing and Routing Cables."



  NOTE:  The Fast Expansion Module is not hot-pluggable.

                                      ___



  The Fast Expansion Module is located at the lower left of the front of the

  8225.  See Figure 1-1 on page 1-1 for its location.



  1.  Remove the Fast Expansion Module slot cover-plate by turning the two

      knurled knobs on the front of the module counterclockwise.  Remove the

      cover-plate and retain it so that you can locate it in the future, should

      you need to replace it in the 8225.  If a Fast Expansion Module is

      removed from the 8225, you should always replace the cover plate to

      ensure proper cooling.



  2.  Insert the Fast Expansion Module, ensuring that the edges slide through

      the guides, until the connector end is firmly seated.



  3.  Turn the two knurled knobs clockwise until they are securely attached to

      the 8225 frame.





  INSTALLING AND ROUTING CABLES

  _____________________________



  Remember these tips when connecting cables:



  o   Avoid stretching or bending the cables.



  o   Avoid routing the cables near potential sources of electromagnetic

      interference, such as motorized devices or fluorescent lights.



  o   Route cables away from aisles and walkways to avoid creating trip

      hazards.  Use floor cable covers to secure cables if such routes cannot

      be avoided.





  CONNECTING CABLES TO 100BASE-TX PORTS AND FAST EXPANSION MODULES



  1.  Refer to your network documentation to determine each cable's port or

      Fast Expansion Module assignment.



  2.  Using appropriate connectors, connect the cables to the ports or Fast

      Expansion Modules.



  3.  Label the cables so that it will be easy to identify the device at the

      other end of the cable if you have to troubleshoot a network problem.



      At the end of the cable nearest the 8225, place a label containing a

      unique identifier for the cable, the location and MAC address of the





  2-4  8225 Hub Installation and Planning Guide





      device at the other end of the cable, and the number of the port to which

      the device is attached.



  4.  If required, at the attached device's end of each cable, connect a cable

      from the device to any faceplate or other intermediate connection point,

      as appropriate.



  5.  Label the cables so that it will be easy to identify the 8225 port at the

      other end of the cable if you have to troubleshoot a network problem.



      At the end of the cable nearest the attached device, place a label

      containing a unique identifier for the cable, the location and MAC

      address of the 8225 at the other end of the cable, and the number of the

      8225 port to which the device is connected.





  CONNECTING HUB INTERCONNECT CABLES



  If you will be configuring multiple 8225s into one or more stacks, you will

  need optional hub interconnect cables (P/N 85H3825).  One cable is required

  for every two hubs that will be interconnected.  This cable is illustrated in

  Figure 2-4.





  Figure  2-4. 8225 Hub Interconnect Cable (P/N 85H3825)



  If you will be connecting multiple 8225s using the hub interconnect cable,

  follow the steps below.  If not, go to "Powering On the 8225" on page 2-6.



  1.  Connect one end of the cable to the Down port of the 8225 that is

                                          ____

      physically nearest the top of the stack.  Be sure that the cable is

      firmly seated and that the latches are engaged.



  2.  Connect the other end of this cable to the Up port of the 8225 that is

                                                 __

      physically next lowest in the stack.  Be sure that the cable is firmly

      seated and that the latches are engaged.



  3.  Repeat the above steps for each hub in the stack, progressing downward.



      NOTE:  Never allow a hub interconnect cable to remain partially attached.

      If a hub interconnect cable is disconnected from one 8225 but is left

      connected to the other 8225, Ethernet traffic to all backplane buses will

      be disrupted.



  In Figure 2-5, the topmost 8225 is Model 002 and the two lower units are

  Model 001s.  Note the hub interconnect cable connections.  In this example,

  the Model 002 would be identified as occupying position 1, the Model 001 in

  the middle would occupy position 2, and the Model 001 on the bottom would

  occupy position 3.





  Figure  2-5. Example 8225 Stack





                                           Chapter 2.  Installing the 8225  2-5





  CONNECTING A MODEM OR A NULL-MODEM CABLE TO THE MANAGEMENT PORT



  If you have a modem or a null-modem cable to install, follow the steps given

  here.  If not, go to "Powering On the 8225."



  1.  If you are installing a modem, unpack it and install it according to the

      manufacturer's instructions.



      An  installed modem should be set to force Data Set Ready (DSR) signals.

      Typically, this is done by setting a switch on the modem.  Refer to the

      documentation that came with your modem for specific instructions.



  2.  Connect one end of the serial cable (modem connection) or one end of the

      null-modem cable (direct connection) to the 8225 port labeled Management.

                                                                    __________





  Figure  2-6. Location of the Management Port



      o   If you have a managed stack, this will be the Model 002 or Model 003

          whose Prim LED is on, indicating that it is the primary management

                ____

          agent.



      o   If you have an unmanaged stack of Model 001s, this will be any of the

          units.



  3.  If you are installing a modem, connect the other end of the cable to the

      modem and connect the modem to the telephone system.  If you are

      installing a null-modem cable, connect the other end of the cable to the

      communications port on your computer.



  4.  Continue with "Powering On the 8225."





  POWERING ON THE 8225

  ____________________



  This section describes how you should expect the LEDs to function when you

  power the 8225 ON.



  1.  Connect the power cord to the connector at the back of the 8225, as shown

      in Figure 2-7.



      NOTE:   If you have installed an optional, redundant power module, you

      will connect two power cords.





  Figure  2-7. Connecting the Power Cord



  2.  Insert the other end of the power cord or cords into the electric outlet.



      NOTE:  There is no power switch on the 8225



  3.  Look for the following LED blink sequence:





  2-6  8225 Hub Installation and Planning Guide





      o   First, all LEDs on the front panel should come on for approximately

          one second.



      o   Then, the Link/Activity LEDs on the individual ports should blink on,

          then off, in sequence from left to right (port 1 to port 12).



          NOTE:  Because the POST diagnostics are of a brief duration, it may

          appear that one or more of the LEDs did not blink on and off.  The

          important thing to note is whether any LEDs remain on and the

          Partition LEDs blink for 1 to 2 seconds.  If this occurs, refer to

          _________

          Chapter 4, "Troubleshooting and Service."



      o   Finally, all LEDs that are appropriate for the particular 8225 stack

          configuration you have installed (such as the power module, Fast

          Expansion Module, management, and backplane LEDs) should reach their

          normal states.  Refer to Table 3-1 on page 3-48 and Table 3-2 on

          page 3-50 for more information concerning the LEDs.





                                           Chapter 2.  Installing the 8225  2-7





  2-8  8225 Hub Installation and Planning Guide





  CHAPTER 3.  8225 ADMINISTRATION

  _______________________________





  This chapter explains how to manage your 8225 installation..  Its primary

  emphasis will be on using the built-in user interface.  You can also use SNMP

  to manage your 8225 installation.  See "Preparing for SNMP Management" on

  page 3-54 for details.





  THE 8225 USER INTERFACE PROGRAM

  _______________________________



  The 8225 incorporates a powerful user interface that can be used to manage

  individual 8225s or a complete stack using a terminal emulation program that

  supports VT100 emulation (out-of-band), or using Telnet over an IP connection

  (in-band).



  NOTE:  Telnet is a component of most TCP/IP applications.  You will need to

  install TCP/IP before you can take advantage of this option.



  For more information on using Telnet over an IP connection, see"Management

  Using Telnet" on page 3-53 .





  MANAGEMENT USING TERMINAL EMULATION SOFTWARE



  You can manage your 8225 installation in one of two ways using terminal

  emulation software:



  o   By means of a direct, null-modem cable connection

  o   By means of the public telephone network, using modems



  Obtain and install a terminal emulation software application that is

  compatible with your workstation's operating system and that supports VT100

  emulation.





  Communicating Using a Null-Modem Cable



  Configure the terminal emulation application as follows:



  o   Speed of 9600 bps

  o   No parity

  o   8 data bits

  o   1 stop bit

  o   VT100 emulation

  o   The communications port of the workstation that you have configured in

      the emulation software



  NOTE:  Some emulation applications (such as many Windows-based programs) use

  the workstation keyboard's cursor movement keys; for example, to switch

  between windows.  Because the 8225's user interface program uses the cursor





  (C) Copyright IBM Corp. 1996                                              3-1





  movement keys, it is necessary when using such terminal emulators to turn off

  this feature.  In Windows 3.1, for example, perform the following steps:



  1.  From the Program Manager window, double-click the Accessories group icon.



  2.  Inside the Accessories window, double-click the Terminal icon.  This will

      open a blank terminal emulation session.



  3.  From within the Terminal window, click SETTINGS from the menu bar.



  4.  Select TERMINAL PREFERENCES.



  5.  Deselect the check box "Use Function, Arrow, and Control Keys for

      Windows."



  6.  Select OK.



  7.  You can save your current session settings by selecting FILE from the

      menu bar and selecting SAVE AS....  Give a file name and open this file

      the next time you start your emulation session.



  For information on connecting an 8225 to a null-modem cable, see "Connecting

  a Modem or a Null-Modem Cable to the Management Port" on page 2-6.



  SPECIAL CONSIDERATIONS:  Because most communications software assumes that

  you will be using a modem, if you will be connecting using a null-modem

  cable, you need to be certain that your emulation software supports

  communication with a device that is directly attached to your workstation.

  Follow any special instructions from the application manufacturer concerning

  configuration steps that may be required to support communication with a

  directly attached device.





  Communicating Using a Modem



  If you will be communicating with the 8225 by means of a modem connection,

  you will need to install a second modem and connect it to your computer.



  Configure the terminal emulation application as follows:



  o   Maximum speed of your modem

  o   No parity

  o   8 data bits

  o   1 stop bit

  o   VT100 emulation

  o   The workstation's communications port that will be used





  3-2  8225 Hub Installation and Planning Guide





  ESTABLISHING A SESSION WITH THE 8225



  To initiate a session using the 8225's user interface program, perform the

  following steps:



  1.  Either



      o   Invoke your emulation software to establish a direct connection by

          means of the null-modem cable; or



      o   Invoke your emulation software and dial the number of the modem that

          is attached to the 8225.



  2.  After you have established a connection with the 8225, you will be

      presented with one of two situations:



      o   If the 8225 was already powered on, you will see a blank screen.



      o   If you power on the 8225 after establishing the connection, you will

          see a series of diagnostic messages.



          NOTE:  If any of these messages indicates a failure, see Chapter 4,

          "Troubleshooting and Service."



  3.  In either case, press ENTER two or three times.  You will be prompted for

      a password (Model 001) or user and password (Model 002 and Model 003).



      o   All 8225 Model 001s are shipped with a password of ADMIN.  Persons

          accessing the Model 001 using this password will have both read and

          write capability and will be able to alter the configuration of the

          8225,



      o   All Model 002s and Model 003s are shipped with a user name of ADMIN

          and no preset password.  A password can be assigned (see "User

          Passwords" on page 3-35).  Persons accessing the 8225 using this

          combination will have both read and write capability and will be able

          to alter the configuration of the 8225 installation, as well as

          collect hub, segment, and stack statistics.



      o   In addition, all 8225 Model 002s and Model 003s are shipped with a

          user name of GUEST.  Persons accessing the 8225 using this user name

          will have read capability only and will be able to read, but not

          change, the installation's configuration and collect statistics.



  If you are connecting to a Model 002 or Model 003, you must press ENTER after

  entering the user name and before entering the password.  Press ENTER a

  second time after entering the password.



  4.  You are now presented with the 8225's main menu.  The remainder of this

      chapter will treat each of the management options available to you from

      these menus.





                                           Chapter 3.  8225 Administration  3-3





  MODEL 001 MANAGEMENT OPTIONS

  ____________________________



  NOTE:  If you attempt to communicate with a Model 001 that is configured in a

  managed stack, a message will be displayed informing you that a management

  agent has been detected and that the Management Port of the Model 001 has

  been disabled.



  Once you have entered a valid user password, the menu illustrated in

  Figure 3-1 is displayed when you are connected to an unmanaged Model 001.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |               **************************************************                 |

  |               * IBM 8225 Fast Ethernet Stackable Hub Model 001 *                 |

  |               **************************************************                 |

  |                                                                                  |

  |                                    Status                                        |

  |                                    ------                                        |

  |                              Hub ID  :  __                                       |

  |                              Segment :  __                                       |

  |                       ===============================                            |

  |                                                                                  |

  |                                   Command                                        |

  |                                   -------                                        |

  |                         h = Set hub ID                                           |

  |                         s = Set segment                                          |

  |                         f = Set FEM status                                       |

  |                         c = Change password                                      |

  |                         w = Write values into EEPROM                             |

  |                         q = Exit                                                 |

  |                                                                                  |

  |                        Enter command _                                           |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-1. Model 001 Main Menu Panel



  SET HUB ID

            Typing H and pressing ENTER displays a window in which you can

            enter a hub identification number (between 0 and 6) for this 8225.

            In a managed stack, the hub ID is assigned automatically by the

            primary management agent.  If you are relocating a Model 001 from a

            managed stack to another stack, either managed or unmanaged, or if

            you are configuring an ummanaged stack of Model 001s, you may have

            to reset the existing hub ID.



  SET SEGMENT

            Typing S and pressing ENTER displays a window in which you can

            enter the backplane segment to which you want the 8225 to be





  3-4  8225 Hub Installation and Planning Guide





            assigned.  Possible segment values are 1, 2, or 3.  You can isolate

            the hub from the rest of the stack by entering 0.



  SET FEM STATUS

            If a Fast Expansion Module is installed, typing F and pressing

            ENTER causes a second menu to be displayed.  See "Set FEM Status"

            for details.



  CHANGE PASSWORD

            Typing C and pressing ENTER displays a window in which you can

            change the Model 001's password.  The maximum length of the

            password is five characters.  You will be prompted to reenter the

            password for verification.



            NOTE:  Unlike the Model 002 and Model 003, the Model 001 does not

            have a guest password status that provides read-only access.



  WRITE VALUES INTO EEPROM

            Typing W and pressing ENTER causes all changes you have made to the

            Model 001's configuration to be written to nonvolatile memory.  If

            you do not do this, changes will be lost the next time the 8225 is

            restarted.



  EXIT

            Typing Q and pressing ENTER exits the Model 001 interface program

            and returns you to the password prompt.  If you have made changes,

            but have not written them to memory, you will be prompted to do

            this before exiting the user interface.





  SET FEM STATUS



  If your Model 001 has a Fast Expansion Module installed, entering F on the

  Main Menu causes the panel illustrated in Figure 3-2 to be displayed.





                                           Chapter 3.  8225 Administration  3-5





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |               **************************************************                 |

  |               * IBM 8225 Fast Ethernet Stackable Hub Model 001 *                 |

  |               **************************************************                 |

  |                                                                                  |

  |                                  FEM Status                                      |

  |                                    ------                                        |

  |                               Duplex :  ____                                     |

  |                              Forward :  ____________________                     |

  |                        Back Pressure :  ________                                 |

  |                                                                                  |

  |                       ===============================                            |

  |                                                                                  |

  |                                   Command                                        |

  |                                   -------                                        |

  |                          d = Set duplex mode                                     |

  |                          f = Set forward mode                                    |

  |                          b = Set back pressure                                   |

  |                          r = Return to Main Menu                                 |

  |                                                                                  |

  |                        Enter command _                                           |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-2. Model 001 Set FEM Status Panel



  SET DUPLEX MODE

            Typing D and pressing ENTER displays a window in which you can

            enter 1 to set the Fast Expansion Module to half-duplex mode, 2 to

            set it to full-duplex mode, or 3 to set it to auto negotiation

            mode.



  SET FORWARD MODE

            Typing M and pressing ENTER displays a window in which you can

            enter 1 to set forward mode to adaptive cut-through or 2. to set

            the mode to store and forward.



  SET BACK PRESSURE

            Typing B and pressing ENTER displays a window in which you can

            enter 1 to disable back pressure flow control or 2 to enable it.



  RETURN TO MAIN MENU

            Typing R and pressing ENTER returns you to the Main Menu.





  3-6  8225 Hub Installation and Planning Guide





  MODEL 002 AND MODEL 003 MANAGEMENT OPTIONS

  __________________________________________



  Once you have entered a valid user ID and password, the menu illustrated in

  Figure 3-3 is displayed when you are connected to a Model 002 or Model 003.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                 Main Menu                                        |

  |                                 =========                                        |

  |         Exit                                                                     |

  |         Restart System                        System Information ...             |

  |                                                                                  |

  |                                                                                  |

  |                            Configuration Panels:                                 |

  |                                                                                  |

  |         SNMP Configuration ...                Port Intrusion Control ...         |

  |         Segment Configuration ...             TFTP Download ...                  |

  |         Hub Configuration ...                 Xmodem Download ...                |

  |         Port Configuration ...                User Passwords ...                 |

  |         Port Backups ...                      Console Lockout ...                |

  |                                                                                  |

  |                                                                                  |

  |                             Statistics Panels:                                   |

  |                                                                                  |

  |         Segment Statistics ...                Port Statistics ...                |

  |         Hub Statistics ...                                                       |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                         <Ctrl+E> to exit this program.                           |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-3. Model 002 and Model 003 Main Menu Panel



  To navigate any 8225 user interface panel, use the four cursor movement keys.

  The Up and Down arrow keys cause selections to be highlighted while moving

      __     ____

  vertically.  The Right and Left arrow keys cause items to the right or left

                   _____     ____

  of the currently highlighted item to be highlighted.  To select a highlighted

  item, press ENTER.



  Items that are followed by three dots (...) will, when selected, take you to

                                         ___

  a second panel where additional selections will be required.



  From the Main Menu panel, pressing CTRL+E causes an immediate exit from the

  user interface program.  On subsequent panels, pressing CTRL+T will return

  you to the Main Menu.



  Note that on all panels, the third line from the bottom contains a brief

  description of the highlighted item.  On configuration screens, this line

  will indicate whether the field can be updated and how this is done.





                                           Chapter 3.  8225 Administration  3-7





  o   The field may be a read-only field.



  o   The field may be a data entry field.  If this is the case, press ENTER,

      enter the required data, and then press ENTER again.



  o   The field may be a selection field.  If this is the case, press ENTER to

      begin the selection process, and then press CTRL+L to cycle through the

      available choices.  When the choice you want is displayed, press ENTER.





  3-8  8225 Hub Installation and Planning Guide





  EXIT



  Selecting this item causes you to exit from the user interface program.  Note

  that this has the same effect as pressing CTRL+E.





  RESTART SYSTEM



  Selecting this item results in the 8225 and all units for which it is the

  primary management agent being restarted.  You are prompted before this

  action takes place.





  SYSTEM INFORMATION



  Selecting SYSTEM INFORMATION on the Main Menu causes the panel illustrated in

  Figure 3-4 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                             System Information                                   |

  |                                                                                  |

  |                                                                                  |

  |          Return to Previous Panel                                                |

  |                                                                                  |

  |          System Description : _______________________________________            |

  |                                                                                  |

  |          System Object ID   : ____________________________                       |

  |                                                                                  |

  |          System Up Time     : _______________________________________            |

  |                                                                                  |

  |          System Name        : _______________________________________            |

  |                                                                                  |

  |          Contact            : _______________________________________            |

  |                                                                                  |

  |          Location           : _______________________________________            |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-4. System Information Panel



  You can place data into the System Name, Contact, and Location fields to

  provide useful information to all users concerning your 8225 installation.

  The information contained on this panel should be kept current so that

  persons requiring assistance know whom to contact.





                                           Chapter 3.  8225 Administration  3-9





  SNMP CONFIGURATION



  NOTE:  If you will be using an SNMP-based network management program to

  manage your 8225 installation, you need to provide the appropriate

  information on this panel.  If you will not be using an SNMP-based network

  management application, you can ignore this section.



  Selecting SNMP CONFIGURATION on the Main Menu causes the panel illustrated in

  Figure 3-5 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                             SNMP Configuration                                   |

  |                                                                                  |

  |                                                                                  |

  |                           Return To Previous Panel                               |

  |                                                                                  |

  |                           Send Authentication Fail Trap :  ____                  |

  |                                                                                  |

  |                           SNMP Communities ...                                   |

  |                                                                                  |

  |                           IP Trap Managers ...                                   |

  |                                                                                  |

  |                           IPX Trap Managers ...                                  |

  |                                                                                  |

  |                           Auto-Discovery Configuration ...                       |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-5. SNMP Configuration Panel



  RETURN TO PREVIOUS PANEL

            Return to the SNMP Configuration panel.



  SEND AUTHENTICATION FAIL TRAP

            This is a selection field.  Possible values are YES (send a trap

            message when SNMP authentication fails) or NO (do not send

            authentication failure trap messages).





  3-10  8225 Hub Installation and Planning Guide





  SNMP Communities



  Selecting SNMP COMMUNITIES on the SNMP Configuration panel causes the panel

  illustrated in Figure 3-6 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                SNMP Communities                                  |

  |                                                                                  |

  |                                                                                  |

  |                 Return To Previous Panel                                         |

  |                                                                                  |

  |                        Community Name       Access     Status                    |

  |                                                                                  |

  |                 1.  ____________________  __________  _________                  |

  |                 2.  ____________________  __________  _________                  |

  |                 3.  ____________________  __________  _________                  |

  |                 4.  ____________________  __________  _________                  |

  |                 5.  ____________________  __________  _________                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-6. SNMP Communities Panel



  RETURN TO PREVIOUS PANEL

            Return to the SNMP Configuration panel.



  COMMUNITY NAME

            This field is where you enter the name that identifies each SNMP

            community.



  ACCESS

            This is a selection field.  Possible values are READ/WRITE (the

            community can read and update system information) and READ ONLY

            (the community can only read system information).



  STATUS

            This is a selection field.  Possible values are ENABLED (the

            community is enabled) and DISABLED (the community is not enabled).





                                          Chapter 3.  8225 Administration  3-11





  IP Trap Managers



  Selecting IP TRAP MANAGERS on the SNMP Configuration panel causes the panel

  illustrated in Figure 3-7 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                              IP Trap Managers                                    |

  |                                                                                  |

  |                                                                                  |

  |            Return To Previous Panel                                              |

  |                                                                                  |

  |                   IP Address          Community Name       Status                |

  |                                                                                  |

  |            1.  _________________   ____________________   _________              |

  |            2.  _________________   ____________________   _________              |

  |            3.  _________________   ____________________   _________              |

  |            4.  _________________   ____________________   _________              |

  |            5.  _________________   ____________________   _________              |

  |            6.  _________________   ____________________   _________              |

  |            7.  _________________   ____________________   _________              |

  |            8.  _________________   ____________________   _________              |

  |            9.  _________________   ____________________   _________              |

  |           10.  _________________   ____________________   _________              |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-7. IP Trap Managers Panel



  RETURN TO PREVIOUS PANEL

            Return to the SNMP Configuration panel.



  IP ADDRESS

            This field is where you enter the dotted-decimal IP address to

            which trap messages are to be sent.



  COMMUNITY NAME

            This field is where you enter the community name of the IP trap

            manager.



  STATUS

            This is a selection field.  Possible values are ENABLED (the IP

            trap manager is enabled) and DISABLED (the IP trap manager is not

            enabled).





  3-12  8225 Hub Installation and Planning Guide





  IPX Trap Managers



  Selecting IPX TRAP MANAGERS on the SNMP Configuration panel causes the panel

  illustrated in Figure 3-8 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                              IPX Trap Managers                                   |

  |                                                                                  |

  |                                                                                  |

  |      Return To Previous Panel                                                    |

  |                                                                                  |

  |                  IPX Address                Community Name       Status          |

  |                                                                                  |

  |      1.  _____________________________  ____________________   _________         |

  |      2.  _____________________________  ____________________   _________         |

  |      3.  _____________________________  ____________________   _________         |

  |      4.  _____________________________  ____________________   _________         |

  |      5.  _____________________________  ____________________   _________         |

  |      6.  _____________________________  ____________________   _________         |

  |      7.  _____________________________  ____________________   _________         |

  |      8.  _____________________________  ____________________   _________         |

  |      9.  _____________________________  ____________________   _________         |

  |     10.  _____________________________  ____________________   _________         |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-8. IPX Trap Managers Panel



  RETURN TO PREVIOUS PANEL

            Return to the SNMP Configuration panel.



  IPX ADDRESS

            This field is where you enter the dotted-decimal IPX address to

            which trap messages are to be sent.



  COMMUNITY NAME

            This field is where you enter the community name of the IPX trap

            manager.



  STATUS

            This is a selection field.  Possible values are ENABLED (the IPX

            trap manager is enabled) and DISABLED (the IPX trap manager is not

            enabled).





                                          Chapter 3.  8225 Administration  3-13





  Auto-Discovery Configuration



  Selecting AUTO-DISCOVERY CONFIGURATION on the SNMP Configuration panel causes

  the panel illustrated in Figure 3-9 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                         Auto-Discovery Configuration                             |

  |                                                                                  |

  |                                                                                  |

  | Return to Previous Panel                                                         |

  |                                                                                  |

  |                       IP Auto-Discovery Configuration :                          |

  |                                                                                  |

  |                         Status            : ________                             |

  |                         Polling Interval  : __ Minute(s)                         |

  |                         Lost Contact Time : _   Hour(s)                          |

  |                                                                                  |

  |                                                                                  |

  |                       IPX Auto-Discovery Configuration :                         |

  |                                                                                  |

  |                         Status            : ________                             |

  |                         Polling Interval  : __ Minute(s)                         |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-9. Auto-Discovery Configuration Panel



  RETURN TO PREVIOUS PANEL

            Return to the SNMP Configuration panel.



  STATUS

            These are selection fields to set the status of the IP and IPX

            auto-discovery configurations.  Possible values are ENABLED and

            DISABLED.



  POLLING INTERVAL

            These fields allow you to enter the polling interval for the IP and

            IPX auto-discovery traps.  The maximum value that can be entered is

            99 minutes.



  LOST CONTACT TIME

            This field allows you to enter a time limit for monitoring loss of

            contact with the management station.  The maximum value that can be

            entered is 99 hours.





  3-14  8225 Hub Installation and Planning Guide





  SEGMENT CONFIGURATION



  Selecting SEGMENT CONFIGURATION on the Main Menu causes the panel illustrated

  in Figure 3-10 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                              Segment Configuration                               |

  |                                                                                  |

  |    Return To Previous Panel                                                      |

  |                              Segment 1        Segment 2        Segment 3         |

  |    Segment Name         : _______________  _______________  _______________      |

  |                                                                                  |

  |    IP Configuration :                                                            |

  |       IP Address        : _______________  _______________  _______________      |

  |       Subnet Mask       : _______________  _______________  _______________      |

  |       Gateway IP        : _______________  _______________  _______________      |

  |       Serial IP         : _______________  _______________  _______________      |

  |                           Save to EEPROM  Save to EEPROM  Save to EEPROM         |

  |                                                                                  |

  |    IPX Frame Type       : _______________  _______________  _______________      |

  |    Internal IPX Network : _______________  _______________  _______________      |

  |                                                                                  |

  |                                                                                  |

  |    IP Protocol          : _______________  _______________  _______________      |

  |    IPX Protocol         : _______________  _______________  _______________      |

  |    SNMP Over Ethernet   : _______________  _______________  _______________      |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-10. Segment Configuration Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  SEGMENT NAME

            This field is where you enter a name to identify each segment.



  IP ADDRESS

            This field is where you enter the dotted-decimal IP address

            assigned to the segment.



  SUBNET MASK

            This field is where you enter the dotted-decimal subnet mask

            address assigned to the segment.



  GATEWAY IP

            This field is where you enter the dotted-decimal address assigned

            to the segment gateway.





                                          Chapter 3.  8225 Administration  3-15





  SERIAL IP

            This field is where you enter the dotted-decimal address assigned

            to the Management Port.



  SAVE TO EEPROM

            This field saves the IP addresses to nonvolatile memory and

            immediately enables them.  Press ENTER when this field is

            highlighted, and then respond Y (Yes) or N (No) to the prompt that

            is displayed on the message line near the bottom of the panel.



  IPX FRAME TYPE

            This is a selection field.  Use CTRL+L to cycle through all of the

            supported IPX frame types.



  INTERNAL IPX NETWORK

            This field is where you enter the IPX network address.



  IPX SAP INTERVAL

            This field is where you enter the time interval, in minutes, for

            the IPX SAP broadcast.  A value of 1440 disables this function.



  IP PROTOCOL

            This is a selection field.  The options are ENABLED and DISABLED.



  IPX PROTOCOL

            This is a selection field.  Possible values are ENABLED and

            DISABLED.



  SNMP OVER ETHERNET

            This is a selection field.  Possible values are ENABLED and

            DISABLED.





  3-16  8225 Hub Installation and Planning Guide





  HUB CONFIGURATION



  Selecting HUB CONFIGURATION on the Main Menu causes the panel illustrated in

  Figure 3-11 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                     Hub Configuration: Hub Selection Menu                        |

  |                                                                                  |

  |                                                                                  |

  |                          Return To Previous Panel                                |

  |                                                                                  |

  |                           Hub 1 Configuration ...                                |

  |                           Hub 2 Configuration ...                                |

  |                           Hub 3 Configuration ...                                |

  |                           Hub 4 Configuration ...                                |

  |                           Hub 5 Configuration ...                                |

  |                           Hub 6 Configuration ...                                |

  |                                                                                  |

  |                           Hub ID Configuration ...                               |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-11. Hub Configuration: Hub Selection Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  HUB ID CONFIGURATION

            Change the Hub ID setting of 8225s.



  When you select the hub you want to configure, the panel illustrated in

  Figure 3-12 is displayed.





                                          Chapter 3.  8225 Administration  3-17





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                              Hub Configuration                                   |

  |                                                                                  |

  |                           Return To Previous Panel                               |

  |                                                                                  |

  |        Hub ID  : __                              Position  : __                  |

  |        Name    : ____________                    Type      : ____________        |

  |        Segment : __                              H/W Ver   : __                  |

  |        Power 1 : ____________                    F/W Ver   : ____                |

  |        Power 2 : ____________                                                    |

  |                                                                                  |

  |        Network Management Module (NMM):                                          |

  |                                                                                  |

  |        Status  : ________________                H/W Ver   : __                  |

  |        Segment : __                              F/W Ver   : ____                |

  |        Bootup Option    : _____________________                                  |

  |                                                                                  |

  |        Physical Address : _________________                                      |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-12. Hub Configuration Panel



  RETURN TO PREVIOUS PANEL

            Return to the Hub Configuration: Hub Selection panel.



  HUB ID

            This field displays the hub ID number.



  POSITION

            This field displays the 8225's position in the stack in top down

            order.



  NAME

            This field is where you can enter a name by which this hub is to be

            identified.



  TYPE

            This field displays the hub model (for example, 8225-002).



  SEGMENT

            This field allows you to enter values that assign the 8225 to a

            backplane segment (1, 2, or 3) or to isolate it from the stack (0).





  3-18  8225 Hub Installation and Planning Guide





  H/W VER

            This field displays the hardware level of this 8225.



  POWER 1

            This field displays the status of a power module installed in slot

            1.  The possible values are OPERATIONAL, NOT PRESENT, or FAILED.



  F/W VER

            This field displays the microcode level of this 8225.



  POWER 2

            This field displays the status of a power module installed in slot

            2.  Possible values are OPERATIONAL, NOT PRESENT, or FAILED.



  If the selected hub is a Model 002 or Model 003, information regarding the

  Network Management Module will be displayed.  If the unit is a Model 001,

  this information is replaced by NOT PRESENT.



  STATUS

            This field displays the status of the NMM.  Possible values are

            PRIMARY and BACKUP.



  H/W VER

            This field displays the hardware level of the NMM.



  SEGMENT

            This field allows you to enter values that assign the NMM to a

            backplane segment (1, 2, or 3).



            NOTE:  In order to maintain in-band connectivity between the 8225

            management agent and the Network management platform, you may want

            to assign the NMM to a backplane that is different from the

            backplane to which the 8225 repeater function has been assigned.



  F/W VER

            This field displays the microcode level of this NMM.



  BOOTUP OPTION

            This is a selection field that controls how microcode is started in

            the system.  Possible values are NORMAL (boot the 8225 normally

            using the resident microcode), TFTP DOWNLOAD (download microcode

            using TFTP before bootup), BOOTP GET IP, (obtain the 8225's IP

            information from the BootP server and then start the microcode in

            flash ROM), BOOTP DOWNLOAD (obtain the 8225's IP information from

            the BootP server and then load microcode from the TFTP server), NO

            BOOTP TFTP REQUEST (turn off the BootP and TFTP requests, even if

            the IP information or the microcode in flash ROM is corrupt), or

            BOOTP UPGRADE FIRMWARE (get the IP information from the TFTP

            server, download the microcode file, perform a permanent upgrade,

            and reset the option to NORMAL).





                                          Chapter 3.  8225 Administration  3-19





            NOTES:



            1.  Use the NO BOOTP TFTP REQUEST option if you want to download

                microcode out-of-band.



            2.  Unlike other options that result in a download, the BOOTP

                UPGRADE FIRMWARE option can be used on 8225s that are either

                primary or secondary management units.  Other download options

                can be used only with primary management units.



  PHYSICAL ADDRESS

            This field displays the physical address of the NMM.





  Hub ID Configuration



  When you select HUB ID CONFIGURATION from the Hub Selection panel,  the panel

  shown in Figure 3-13 is displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                              Hub ID Configuration                                |

  |                                                                                  |

  |                                                                                  |

  |                            Return To Previous Panel                              |

  |                                                                                  |

  |                                                                                  |

  |                              Position    Hub id                                  |

  |                                                                                  |

  |                                 1.          _                                    |

  |                                 2.          _                                    |

  |                                 3.          _                                    |

  |                                 4.          _                                    |

  |                                 5.          _                                    |

  |                                 6.          _                                    |

  |                                                                                  |

  |                                                                                  |

  |                              Enable Above Settings                               |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-13. Hub ID Configuration Panel



  RETURN TO PREVIOUS PANEL

            Return to the Hub Configuration: Hub Selection panel.





  3-20  8225 Hub Installation and Planning Guide





  POSITION

            The position in the stack, in top down order, of the 8225 whose ID

            is to be set.



  HUB ID

            This is a selection field.  Possible values range from 1 through 6.



  ENABLE ABOVE SETTINGS

            Put into effect any hub ID settings that you have changed.





                                          Chapter 3.  8225 Administration  3-21





  PORT CONFIGURATION



  Selecting PORT CONFIGURATION on the Main Menu causes the panel illustrated in

  Figure 3-14 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                    Port Configuration: Port Selection Menu                       |

  |                                                                                  |

  |                                                                                  |

  |                           Return To Previous Panel                               |

  |                                                                                  |

  |                                                                                  |

  |                       Select port to get configuration                           |

  |                                                                                  |

  |                        Hub ID |        Port ID                                   |

  |                       --------+------------------------                          |

  |                           1   |  1 through 12   FEM                              |

  |                           2   |  1 through 12   FEM                              |

  |                           3   |  1 through 12   FEM                              |

  |                           4   |  1 through 12   FEM                              |

  |                           5   |  1 through 12   FEM                              |

  |                           6   |  1 through 12   FEM                              |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-14. Port Configuration: Port Selection Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  When you have moved the highlighting to the line containing the hub ID of the

  hub whose ports you want to configure, use the RIGHT and LEFT arrow keys to

  toggle between selection of ports 1 through 12 or the Fast Expansion Module

  (if installed) for configuration.





  Configuring Ports 1-12



  Selecting 1-12 on the Port Configuration: Port Selection panel causes the

  panel illustrated in Figure 3-15 to be displayed





  3-22  8225 Hub Installation and Planning Guide





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                               Port Configuration                                 |

  |                                                                                  |

  |                            Return To Previous Panel                              |

  |     Hub ID :  __                                              Position :  __     |

  |                                                                                  |

  |     Port ID     Name         Type      Oper Status   Link State  Partition       |

  |        1.   ____________  ___________  ____________  __________  _________       |

  |        2.   ____________  ___________  ____________  __________  _________       |

  |        3.   ____________  ___________  ____________  __________  _________       |

  |        4.   ____________  ___________  ____________  __________  _________       |

  |        5.   ____________  ___________  ____________  __________  _________       |

  |        6.   ____________  ___________  ____________  __________  _________       |

  |        7.   ____________  ___________  ____________  __________  _________       |

  |        8.   ____________  ___________  ____________  __________  _________       |

  |        9.   ____________  ___________  ____________  __________  _________       |

  |       10.   ____________  ___________  ____________  __________  _________       |

  |       11.   ____________  ___________  ____________  __________  _________       |

  |       12.   ____________  ___________  ____________  __________  _________       |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-15. Port Configuration Panel



  RETURN TO PREVIOUS PANEL

            Return to the Port Configuration: Port Selection panel.



  HUB ID

            This field displays the hub ID number.



  POSITION

            This field displays the 8225's position in the stack in top down

            order.



  PORT ID

            This field displays the port number.



  PORT NAME

            This field is where you can assign a meaningful name to each port

            on the 8225.



  TYPE

            This field displays the type of port.  The value will be

            100BASE-TX.





                                          Chapter 3.  8225 Administration  3-23





  OPER STATUS

            This is a selection field.  Possible values are ENABLED and

            DISABLED.



  LINK STATE

            This field displays the port's current status.  The two values are

            UP and DOWN.



  PARTITION

            This field displays the partition status of the port.  The two

            values are PART and NOT PART.





  Configuring the Fast Expansion Module



  Selecting FEM on the Port Configuration: Port Selection panel causes the

  panel illustrated in Figure 3-16 to be displayed





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                             FEM Port Configuration                               |

  |                                                                                  |

  |                            Return To Previous Panel                              |

  |                                                                                  |

  |        Hub  ID :  __                                         Position :  __      |

  |        Port ID : FEM                                                             |

  |                                                                                  |

  |        Name       : ____________       Oper Status     : ____________            |

  |                                                                                  |

  |        Type       : ____________       Duplex Status   : ________________        |

  |                                                                                  |

  |        Speed      : ____               Back Pressure   : ________                |

  |                                                                                  |

  |        Link State : __________         Forwarding Mode : _________________       |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-16. FEM Port Configuration Panel



  RETURN TO PREVIOUS PANEL

            Return to the Port Configuration: Port Selection panel.





  3-24  8225 Hub Installation and Planning Guide





  HUB ID

            This field displays the hub ID number.



  POSITION

            This field displays the 8225's position in the stack in top down

            order.



  NAME

            This field is where you can assign a meaningful name to the Fast

            Expansion Module port.



  TYPE

            This field displays the type of Fast Expansion Module.  Possible

            values are 100BASE-TX, 100BASE-T4, 100BASE-FX, or NOT PRESENT.



  SPEED

            This field displays the Fast Expansion Module's speed.  Possible

            values are 10M or 100M.



  LINK STATE

            This field displays the Fast Expansion Module's current status.

            Possible values are UP and DOWN.



  OPER STATUS

            This is a selection field.  Possible values are ENABLED and

            DISABLED.



  DUPLEX

            This is a selection field.  Possible values are HALF-DUPLEX,

            FULL-DUPLEX, and AUTO NEGOTIATION.



  BACK PRESSURE

            This is a selection field.  Possible values are ENABLED or

            DISABLED.



  FORWARDING MODE

            This is a selection field.  Possible values are STORE AND FORWARD

            and ADAPTIVE CUT-THRU.





                                          Chapter 3.  8225 Administration  3-25





  PORT BACKUPS



  Selecting PORT BACKUPS on the Main Menu causes the panel illustrated in

  Figure 3-17 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                Port Backups                                      |

  |                          Return To Previous Panel                                |

  |      Backup Set     Primary Port          Secondary Port        Action           |

  |          1.      Hub: _   Port: ___     Hub: _   Port: ___    __________         |

  |          2.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |          3.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |          4.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |          5.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |          6.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |          7.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |          8.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |          9.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |         10.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |         11.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |         12.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |         13.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |         14.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |         15.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |         16.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |         17.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |         18.      Hub: ___ Port: ___     Hub: ___ Port: ___    __________         |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-17. Port Backups Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  BACKUP SET

            The identifier of the backup pair.  A maximum of 18 backup pairs

            can be configured.



  PRIMARY PORT HUB

            The hub ID of the hub whose port is to be backed up.  This is a

            selection field.  Use CTRL+L to cycle from hub 1 through hub 6.



  PRIMARY PORT PORT

            The port number that is to be backed up.  This is a selection

            field.  Use CTRL+L to cycle through the port numbers.  Possible

            values are 1 through 12 and FEM.





  3-26  8225 Hub Installation and Planning Guide





  SECONDARY PORT HUB

            The hub ID of the hub whose port will be used as the backup.  This

            is a selection field.  Use CTRL+L to cycle from hub 1 through hub

            6.



  SECONDARY PORT PORT

            The port number on the secondary hub that will serve as the backup.

            This is a selection field.  Use CTRL+L to cycle through the port

            numbers.  Possible values are 1 through 12 and FEM.



  ACTION

            This is a selection field.  Possible values are ACTIVE and

            INACTIVE.



            When you set the status to ACTIVE, the status will then change to

            either STAND-BY or BACKUP.  STAND-BY indicates that the primary

            port is functioning and enabled.  BACKUP means that the primary

            port has failed and the backup port has taken over.  To reset a

            backup pair so that the primary port is again handling network

            traffic, reset this value to ACTIVE.



            NOTE:  If a port has been configured for intrusion protection, that

            function has priority.  This means that a port configured as a

            backup that has been disabled as the result of an intrusion

            violation will not be available should the primary port with which

            it is paired fail.





                                          Chapter 3.  8225 Administration  3-27





  PORT INTRUSION CONTROL



  Selecting PORT INTRUSION CONTROL on the Main Menu causes the panel

  illustrated in Figure 3-18 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                    Port Intrusion Control: Hub Selection Menu                    |

  |                                                                                  |

  |                                                                                  |

  |                          Return To Previous Panel                                |

  |                                                                                  |

  |                         Hub 1 Port Intrusion Control ...                         |

  |                         Hub 2 Port Intrusion Control ...                         |

  |                         Hub 3 Port Intrusion Control ...                         |

  |                         Hub 4 Port Intrusion Control ...                         |

  |                         Hub 5 Port Intrusion Control ...                         |

  |                         Hub 6 Port Intrusion Control ...                         |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-18. Port Intrusion Control: Hub Selection Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  When you select the hub you want to configure, the panel illustrated in

  Figure 3-19 is displayed.





  3-28  8225 Hub Installation and Planning Guide





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                            Port Intrusion Control                                |

  |                                                                                  |

  |                           Return To Previous Panel                               |

  |                                                                                  |

  |               Hub ID : __                         Position : __                  |

  |                                                                                  |

  |               Port ID   Authorized Address     Intrusion Action                  |

  |                  1.           _________________ _________________                |

  |                  2.           _________________ _________________                |

  |                  3.           _________________ _________________                |

  |                  4.           _________________ _________________                |

  |                  5.           _________________ _________________                |

  |                  6.           _________________ _________________                |

  |                  7.           _________________ _________________                |

  |                  8.           _________________ _________________                |

  |                  9.           _________________ _________________                |

  |                 10.           _________________ _________________                |

  |                 11.           _________________ _________________                |

  |                 12.           _________________ _________________                |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-19. Port Intrusion Control Panel



  RETURN TO PREVIOUS PANEL

            Return to the Port Intrusion Control: Hub Selection panel.



  HUB ID

            This field displays the hub ID number.



  POSITION

            This field displays the 8225's position in the stack in top down

            order.



  PORT ID

            The port number on the selected hub for which intrusion control is

            to be configured.



  AUTHORIZED ADDRESS

            This field enables you to enter the MAC address of the device that

            is authorized to communicate with this port.



  INTRUSION ACTION

            This is a selection field where you choose the action to be taken

            when an unauthorized MAC address attempts to communicate with the





                                          Chapter 3.  8225 Administration  3-29





            port.  Possible values are INACTIVE, WARNING, or WARNING AND

            DISABLE.



            Warnings are issued in the form of trap messages.  If the port is

            set to DISABLE following receipt of an unauthorized communication,

            it must be re-enabled from the Oper Status field of the Port

            Configuration panel (see Figure 3-15 on page 3-23).





  3-30  8225 Hub Installation and Planning Guide





  TFTP DOWNLOAD



  For more information on obtaining the most current version of the 8225

  microcode, see "Getting New Microcode" on page 3-51.



  When connected to a primary management unit, selecting TFTP DOWNLOAD on the

  Main Menu causes the panel illustrated in Figure 3-20 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                 TFTP Download                                    |

  |                                                                                  |

  |                                                                                  |

  |                             Return To Previous Panel                             |

  |                                                                                  |

  |                                                                                  |

  |                        Download Server IP :  _______________                     |

  |                                                                                  |

  |                        Download Filename  :  _______________                     |

  |                                                                                  |

  |                        Download Mode      :  _______________                     |

  |                                                                                  |

  |                        Start TFTP Download                                       |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-20. TFTP Download Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  DOWNLOAD SERVER IP

            This field is where you enter the IP address of the server where

            the microcode file is stored.



  DOWNLOAD FILE NAME

            This field is where you enter the name of the microcode file that

            is to be downloaded.



  DOWNLOAD MODE

            This is a selection field.  Possible values are TEMPORARY (the

            microcode is not written to nonvolatile memory and will be lost if





                                          Chapter 3.  8225 Administration  3-31





            the system is restarted or powered off) and PERMANENT (the

            microcode is written to nonvolatile memory and is retained across

            system restarts and power interruptions).



  START TFTP DOWNLOAD

            When you select this field, a TFTP download is initiated.





  3-32  8225 Hub Installation and Planning Guide





  XMODEM DOWNLOAD



  For more information on obtaining the most current version of the 8225

  microcode, see "Getting New Microcode" on page 3-51.



  Selecting XMODEM DOWNLOAD on the Main Menu causes the panel illustrated in

  Figure 3-21 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                Xmodem Download                                   |

  |                                                                                  |

  |                                                                                  |

  |                             Return To Previous Panel                             |

  |                                                                                  |

  |                                                                                  |

  |                           Download Mode   : ___________                          |

  |                                                                                  |

  |                           Process Download                                       |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-21. Xmodem Download Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  DOWNLOAD MODE

            This is a selection field.  Possible values are TEMPORARY (the

            microcode is not written to nonvolatile memory and will be lost if

            the system is restarted or powered off) and PERMANENT (the

            microcode is written to nonvolatile memory and is retained across

            system restarts and power interruptions).



  PROCESS DOWNLOAD

            Selecting this field begins the Xmodem download process.  After you

            have highlighted this item and pressed ENTER, follow your emulation

            software's file transfer procedures.  Remember that since you will





                                          Chapter 3.  8225 Administration  3-33





            be transferring a file from your workstation, you will use the

                                   ____

            software's upload function.



            Following a successful Xmodem file transfer, the 8225 will restart.

            You will see the diagnostic messages that are displayed following a

            normal powering on of the system.





  3-34  8225 Hub Installation and Planning Guide





  USER PASSWORDS



  All Model 002s and Model 003s are shipped without a preset password.



  Selecting USER PASSWORDS on the Main Menu causes the panel illustrated in

  Figure 3-22 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                 User Passwords                                   |

  |                                                                                  |

  |                                                                                  |

  |                             Return To Previous Panel                             |

  |                                                                                  |

  |                                                                                  |

  |                     User Type    User Name        Password                       |

  |                                                                                  |

  |                      Admin :   ______________  ______________                    |

  |                      Guest :   ______________  ______________                    |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-22. User Passwords Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  USER TYPE

            The type of access for which the user name and password are being

            set.  The Admin user type has read and write authority and persons

            accessing the system using the user name and password assigned to

            this user type will be able to modify the system configuration.

            The Guest user type has only read authority and cannot modify the

            system configuration.



  USER NAME

            The user name that is to be entered when connecting to the 8225.





                                          Chapter 3.  8225 Administration  3-35





  PASSWORD

            The password that is to be entered when connecting to the 8225.





  3-36  8225 Hub Installation and Planning Guide





  CONSOLE LOCKOUT



  Selecting CONSOLE LOCKOUT on the Main Menu causes the panel illustrated in

  Figure 3-23 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                Console Lockout                                   |

  |                                                                                  |

  |                                                                                  |

  |                            Return To Previous Panel                              |

  |                                                                                  |

  |                                                                                  |

  |                            Status      : _____                                   |

  |                                                                                  |

  |                            Delay Time  : __  Minutes                             |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-23. Console Lockout Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



   STATUS

            This is a selection field that enables you to control the

            activation status of the console lockout function.  Possible values

            are ON and OFF.



  DELAY TIME

            The length of time, in minutes, that the 8225's user interface will

            remain active without user input following a login.  The maximum

            value that can be entered is 99 minutes.





                                          Chapter 3.  8225 Administration  3-37





  SEGMENT STATISTICS



  Selecting SEGMENT STATISTICS on the Main Menu causes the panel illustrated in

  Figure 3-24 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                               Segment Statistics                                 |

  |                                                                                  |

  |                                                                                  |

  |                            Return To Previous Panel                              |

  |                                                                                  |

  |                            Refresh Statistics                                    |

  |                                                                                  |

  |                                                                                  |

  |                                 Segment 1    Segment 2    Segment 3              |

  |                                                                                  |

  |           Frames            :  __________   __________   __________              |

  |           Bytes             :  __________   __________   __________              |

  |           Collisions        :  __________   __________   __________              |

  |           Alignment Errors  :  __________   __________   __________              |

  |           CRC Errors        :  __________   __________   __________              |

  |           Total Errors      :  __________   __________   __________              |

  |           Symbol Errors     :  __________   __________   __________              |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-24. Segment Statistics Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  REFRESH STATISTICS

            Selecting this item causes all fields to be updated.



  FRAMES

            The total number of frames received on the segment during the

            current operation cycle.



  BYTES

            The total number of bytes received on the segment during the

            current operation cycle.



  COLLISIONS

            The total number of collisions detected on the segment during the

            current operation cycle.





  3-38  8225 Hub Installation and Planning Guide





  ALIGNMENT ERRORS

            The total number of alignment error frames detected on the segment

            during the current operation cycle.



  CRC ERRORS

            The total number of CRC error frames detected on the segment during

            the current operation cycle.



  TOTAL ERRORS

            The total number of errors detected on the segment during the

            current operation cycle.



  SYMBOL ERRORS

            The total number of symbol errors detected on the segment during

            the current operation cycle.





                                          Chapter 3.  8225 Administration  3-39





  HUB STATISTICS



  Selecting HUB STATISTICS on the Main Menu causes the panel illustrated in

  Figure 3-25 to be displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                       Hub Statistics: Hub Selection Menu                         |

  |                                                                                  |

  |                                                                                  |

  |                            Return To Previous Panel                              |

  |                                                                                  |

  |                              Hub 1 Statistics ...                                |

  |                              Hub 2 Statistics ...                                |

  |                              Hub 3 Statistics ...                                |

  |                              Hub 4 Statistics ...                                |

  |                              Hub 5 Statistics ...                                |

  |                              Hub 6 Statistics ...                                |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                         <Ctrl+T> to return to Main Menu.                         |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-25. Hub Statistics: Hub Selection Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  When you select the hub whose statistics you want to display, the panel

  illustrated in Figure 3-26 is displayed.





  3-40  8225 Hub Installation and Planning Guide





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                Hub Statistics                                    |

  |                                                                                  |

  |                                                                                  |

  |                              Return To Previous Panel                            |

  |                                                                                  |

  |                              Refresh Statistics                                  |

  |                                                                                  |

  |                                                                                  |

  |                        Hub ID :  __         Position : __                        |

  |                                                                                  |

  |                        Frames               :  __________                        |

  |                        Bytes                :  __________                        |

  |                        Collisions           :  __________                        |

  |                        Alignment Errors     :  __________                        |

  |                        CRC Errors           :  __________                        |

  |                        Total Errors         :  __________                        |

  |                        Symbol Errors        :  __________                        |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-26. Hub Statistics Panel



  RETURN TO PREVIOUS PANEL

            Return to the Hub Statistics: Hub Selection panel.



  REFRESH STATISTICS

            Selecting this item causes all fields to be updated.



  HUB ID

            This field displays the hub ID number.



  POSITION

            This field displays the 8225's position in the stack in top down

            order.



  FRAMES

            The total number of frames received by the hub during the current

            operation cycle.



  BYTES

            The total number of bytes received by the hub during the current

            operation cycle.





                                          Chapter 3.  8225 Administration  3-41





  COLLISIONS

            The total number of collisions detected by the hub during the

            current operation cycle.



  ALIGNMENT ERRORS

            The total number of alignment error frames detected by the hub

            during the current operation cycle.



  CRC ERRORS

            The total number of CRC error frames detected by the hub during the

            current operation cycle.



  TOTAL ERRORS

            The total number of errors detected by the hub during the current

            operation cycle.



  SYMBOL ERRORS

            The total number of symbol errors detected by the hub during the

            current operation cycle.





  PORT STATISTICS



  Selecting PORT STATISTICS on the Main Menu causes the panel illustrated in

  Figure 3-27 to be displayed.





  3-42  8225 Hub Installation and Planning Guide





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                     Port Statistics: Port Selection Menu                         |

  |                                                                                  |

  |                                                                                  |

  |                           Return To Previous Panel                               |

  |                                                                                  |

  |                                                                                  |

  |          Select port to get statistics                                           |

  |                                                                                  |

  |          Hub ID  |                   Port ID                                     |

  |          --------+-------------------------------------------------              |

  |             1    |    1  2  3  4  5  6  7  8  9  10  11  12  FEM                 |

  |             2    |    1  2  3  4  5  6  7  8  9  10  11  12  FEM                 |

  |             3    |    1  2  3  4  5  6  7  8  9  10  11  12  FEM                 |

  |             4    |    1  2  3  4  5  6  7  8  9  10  11  12  FEM                 |

  |             5    |    1  2  3  4  5  6  7  8  9  10  11  12  FEM                 |

  |             6    |    1  2  3  4  5  6  7  8  9  10  11  12  FEM                 |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-27. Port Statistics: Port Selection Panel



  RETURN TO PREVIOUS PANEL

            Return to the Main Menu panel.



  Use the cursor movement keys to highlight the port on the hub whose

  statistics you want to view.





  Port Statistics



  When you select one of the standard 100BASE-TX ports (numbered 1 through 12)

  on the Port Statistics: Port Selection panel, the panel illustrated in

  Figure 3-28 is displayed.





                                          Chapter 3.  8225 Administration  3-43





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                               Port Statistics                                    |

  |                                                                                  |

  |                                                                                  |

  |                              Return To Previous Panel                            |

  |                                                                                  |

  |                              Refresh Statistics                                  |

  |                                                                                  |

  |      Hub  ID : __                                         Position :  __         |

  |      Port ID : __                                                                |

  |                                                                                  |

  |      Readable Frames  : __________     Late Events          : __________         |

  |      Readable Octets  : __________    Data Rate Mismatches  : __________         |

  |      FCS Errors       : __________    Auto Partitions       : __________         |

  |      Alignment Errors : __________    Total Errors          : __________         |

  |      Frames Too Long  : __________    LSA Changes           : __________         |

  |      Short Events     : __________    Last Source Address   : _________________  |

  |      Runts            : __________    Symbol Errors         : __________         |

  |      Collisions       : __________                                               |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-28. Port Statistics Panel



  RETURN TO PREVIOUS PANEL

            Return to the Port Statistics: Port Selection panel.



  REFRESH STATISTICS

            Selecting this item causes all fields to be updated.



  HUB ID

            This field displays the hub ID number.



  POSITION

            This field displays the 8225's position in the stack in top down

            order.



  READABLE FRAMES

            Total number of readable frames received by the port during the

            current operation cycle.



  READABLE OCTETS

            Total number of readable octets received by the port during the

            current operation cycle.





  3-44  8225 Hub Installation and Planning Guide





  FCS ERRORS

            Total number of FCS error frames received by the port during the

            current operation cycle.



  ALIGNMENT ERRORS

            Total number of alignment error frames received by the port during

            the current operation cycle.



  FRAMES TOO LONG

            Total number of frames received by the port during the current

            operation cycle that were too long.



  SHORT EVENTS

            Total number of short events detected by the port during the

            current operation cycle.



  RUNTS

            Total number of runts detected by the port during the current

            operation cycle.



  COLLISIONS

            Total number of collisions detected by the port during the current

            operation cycle.



  LATE EVENTS

            Total number of late events detected by the port during the current

            operation cycle.



  DATA RATE MISMATCHES

            Total number of data rate mismatches detected by the port during

            the current operation cycle.



  AUTO PARTITIONS

            Total number of times this port has been autopartitioned during

            this operation cycle.



  TOTAL ERRORS

            Total errors detected by the port during the current operation

            cycle.



  LSA CHANGES

            Total number of last source address changes detected by the port

            during the current operation cycle.



  LAST SOURCE ADDRESS

            Source address of the last frame received by the port.



  SYMBOL ERRORS

            Total number of symbol errors detected by the port during the

            current operation cycle.





                                          Chapter 3.  8225 Administration  3-45





  FEM Statistics



  When you select FEM on the Port Statistics: Port Selection panel, the panel

  illustrated in Figure 3-29 is displayed.





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                              FEM Port Statistics                                 |

  |                                                                                  |

  |                                                                                  |

  |                              Return To Previous Panel                            |

  |                                                                                  |

  |                              Refresh Statistics                                  |

  |                                                                                  |

  |         Hub  ID : __                                     Position : __           |

  |         Port ID : FEM                                                            |

  |                                                                                  |

  |         In Frames        : __________   FCS Errors        : __________           |

  |         In Discards      : __________   Frames Too Long   : __________           |

  |         In Octets        : __________   Runts             : __________           |

  |         Out Frames       : __________   Collisions        : __________           |

  |         Out Discards     : __________                                            |

  |         Out Octets       : __________                                            |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  |                   Use arrow keys to move. <Enter> to confirm.                    |

  |                        <Ctrl+T> to return to Main Menu.                          |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  3-29. FEM Port Statistics Panel



  RETURN TO PREVIOUS PANEL

            Return to the Port Statistics: Port Selection panel.



  REFRESH STATISTICS

            Selecting this item causes all fields to be updated.



  HUB ID

            This field displays the hub ID number.



  POSITION

            This field displays the 8225's position in the stack in top down

            order.



  IN FRAMES

            Number of frames received by the FEM during the current operation

            cycle.





  3-46  8225 Hub Installation and Planning Guide





  IN DISCARDS

            Number of frames received and filtered by the FEM during the

            current operation cycle.



  IN OCTETS

            Number of octets received by the FEM during the current operation

            cycle.



  OUT FRAMES

            Number of frames transmitted by the FEM during the current

            operation cycle.



  OUT DISCARDS

            Number of frames transmitted and filtered by the FEM during the

            current operation cycle.



  OUT OCTETS

            Number of octets transmitted by the FEM during the current

            operation cycle.



  FCS ERRORS

            Total number of FCS error frames received by the FEM during the

            current operation cycle.



  FRAMES TOO LONG

            Total number of frames received by the FEM during the current

            operation cycle that were too long.



  RUNTS

            Total number of runts detected by the FEM during the current

            operation cycle.





  UNDERSTANDING THE LEDS

  ______________________



  Table 3-1 on page 3-48 and Table 3-2 on page 3-50 give the meanings

  associated with the 8225 status and port LEDs.





  Figure  3-30. Front View of the 8225 Showing the LEDs





                                          Chapter 3.  8225 Administration  3-47





  +---------------------------------------------------------------------------+

  | Table  3-1 (Page 1 of 3). Status LED Explanations                         |

  +---------------+---------+-------------------------------------------------+

  | LED           | STATE   | EXPLANATION                                     |

  +---------------+---------+-------------------------------------------------+

  | EtherWatch    | On      | The percentage of network bandwidth being used  |

  | utilization   |         | is indicated by the five LEDs as follows:       |

  | bar           |         |                                                 |

  | (Green)       |         | 1 1% utilization                                |

  | or            |         |                                                 |

  | (Yellow)      |         | 2 5% utilization                                |

  |               |         |                                                 |

  |               |         | 3 15% utilization                               |

  |               |         |                                                 |

  |               |         | 4 30% utilization                               |

  |               |         |                                                 |

  |               |         | 5 65% utilization                               |

  |               |         |                                                 |

  |               |         | These LEDs turn on in a manner similar to a bar |

  |               |         | graph.  For example, if LEDs 1, 2, and 3 are on |

  |               |         | and LEDs 4 and 5 are off, network utilization   |

  |               |         | is somewhere between 15% and 30%.               |

  |               +---------+-------------------------------------------------+

  |               | Off     | The hub is experiencing less than 1%            |

  |               |         | utilization and is operating normally.          |

  +---------------+---------+-------------------------------------------------+

  | EtherWatch    | On      | The hub has detected collisions on one or more  |

  | collision bar |         | of its ports.  The five LEDs indicate the       |

  | (Green)       |         | following collision rates:                      |

  | or            |         |                                                 |

  | (Yellow)      |         | 1 1% collisions                                 |

  |               |         |                                                 |

  |               |         | 2 3% collisions                                 |

  |               |         |                                                 |

  |               |         | 3 5% collisions                                 |

  |               |         |                                                 |

  |               |         | 4 10% collisions                                |

  |               |         |                                                 |

  |               |         | 5 15% or more collisions                        |

  |               |         |                                                 |

  |               |         | These LEDs turn on in a manner similar to a bar |

  |               |         | graph.  For example, if LEDs 1, 2, and 3 are on |

  |               |         | and LEDs 4 and 5 are off, the collision rate is |

  |               |         | somewhere between 5% and 10%.                   |

  |               +---------+-------------------------------------------------+

  |               | Off     | No collisions are occurring (the normal state). |

  +---------------+---------+-------------------------------------------------+

  | Prim          | On      | The unit has either the SMNP or RMON management |

  | Green         |         | agent installed and is functioning as the       |

  |               |         | primary management unit in its backplane.       |

  |               +---------+-------------------------------------------------+

  |               | Off     | There is no management agent installed, or an   |

  |               |         | installed management agent has failed.          |

  +---------------+---------+-------------------------------------------------+





  3-48  8225 Hub Installation and Planning Guide





  +---------------------------------------------------------------------------+

  | Table  3-1 (Page 2 of 3). Status LED Explanations                         |

  +---------------+---------+-------------------------------------------------+

  | LED           | STATE   | EXPLANATION                                     |

  +---------------+---------+-------------------------------------------------+

  | Bkup          | On      | The unit has either the SMNP or RMON management |

  | Green         |         | agent installed and is functioning as a backup  |

  |               |         | management unit in its backplane.               |

  |               +---------+-------------------------------------------------+

  |               | Off     | There is no management agent installed, or an   |

  |               |         | installed management agent has failed.          |

  +---------------+---------+-------------------------------------------------+

  | RMON          | On      | The unit has the RMON management agent          |

  | Green         |         | installed and the agent is functioning          |

  |               |         | normally.                                       |

  |               +---------+-------------------------------------------------+

  |               | Off     | There is no RMON management agent installed, or |

  |               |         | an installed RMON agent has failed.             |

  +---------------+---------+-------------------------------------------------+

  | BP-1          | On      | The 8225 is attached to the indicated           |

  | BP-2          |         | backplane.                                      |

  | BP-3          +---------+-------------------------------------------------+

  | Green         | Off     | If all three LEDs are off, the 8225 has been    |

  |               |         | isolated from all backplanes.                   |

  +---------------+---------+-------------------------------------------------+

  | ID            | On      | In a stack, each repeater has a unique ID.  The |

  | Green         |         | 8225 automatically sets the hub ID, freeing you |

  |               |         | from this task.  In normal operation, the       |

  |               |         | indicator displays a number in 7-segment        |

  |               |         | format.                                         |

  |               |         |                                                 |

  |               |         | NOTE:  This indicator is used only if the 8225  |

  |               |         | is being managed by a Model 002 or Model 003.   |

  |               +---------+-------------------------------------------------+

  |               | Blinking| The 8225 is in configuration mode.              |

  +---------------+---------+-------------------------------------------------+

  | Power 1       | On      | A power module is installed in the primary      |

  | (Green)       |         | power module slot and is functioning correctly. |

  |               +---------+-------------------------------------------------+

  |               | Blinking| The fan in the power module in the primary slot |

  |               |         | has stopped.                                    |

  |               +---------+-------------------------------------------------+

  |               | Off     | There is no power module in the primary power   |

  |               |         | module slot or the power module in that slot is |

  |               |         | not connected.                                  |

  +---------------+---------+-------------------------------------------------+





                                          Chapter 3.  8225 Administration  3-49





  +---------------------------------------------------------------------------+

  | Table  3-1 (Page 3 of 3). Status LED Explanations                         |

  +---------------+---------+-------------------------------------------------+

  | LED           | STATE   | EXPLANATION                                     |

  +---------------+---------+-------------------------------------------------+

  | Power 2       | On      | A power module is installed in the redundant    |

  | (Green)       |         | power module slot and is functioning correctly. |

  |               +---------+-------------------------------------------------+

  |               | Blinking| The fan in the power module in the redundant    |

  |               |         | slot has stopped.                               |

  |               +---------+-------------------------------------------------+

  |               | Off     | There is no power module in the reduntant power |

  |               |         | module slot or the power module in that slot is |

  |               |         | not connected.                                  |

  +---------------+---------+-------------------------------------------------+

  | FEM           | On      | A Fast Expansion Module is installed and is     |

  | (Green)       |         | functioning correctly.                          |

  |               +---------+-------------------------------------------------+

  |               | Blinking| The installed Fast Expansion Module is          |

  |               |         | malfunctioning.                                 |

  |               +---------+-------------------------------------------------+

  |               | Off     | There is no Fast Expansion Module installed.    |

  +---------------+---------+-------------------------------------------------+



  +---------------------------------------------------------------------------+

  | Table  3-2. Port LED Explanations                                         |

  +---------------+---------+-------------------------------------------------+

  | LED           | STATE   | EXPLANATION                                     |

  +---------------+---------+-------------------------------------------------+

  | Link/Activity | On      | A cable is connected to the 100BASE-TX port,    |

  | (Green)       |         | the port detects that a device is connected to  |

  |               |         | the other end of the cable, and the port can    |

  |               |         | receive a signal from the device.               |

  |               +---------+-------------------------------------------------+

  |               | Blinking| The 100BASE-TX port is currently receiving a    |

  |               |         | frame through that port.                        |

  |               +---------+-------------------------------------------------+

  |               | Off     | A cable is not connected to the 100BASE-TX      |

  |               |         | port, or there is a problem with the cable, the |

  |               |         | port, or the device at the other end of the     |

  |               |         | cable.                                          |

  +---------------+---------+-------------------------------------------------+

  | Partition     | On      | The hub has partitioned the port because of     |

  | (Yellow)      |         | excessive collisions by the device connected to |

  |               |         | the port, or the port has been disabled.        |

  |               +---------+-------------------------------------------------+

  |               | Off     | The port is enabled (the normal state) and no   |

  |               |         | excessive collisions are occurring.             |

  +---------------+---------+-------------------------------------------------+





  3-50  8225 Hub Installation and Planning Guide





  GETTING NEW MICROCODE

  _____________________



  The latest version of 8225 microcode is made available on the IBM PC Company

  Bulletin Board System (BBS), as well as the IBM PC Company WWW and anonymous

  FTP sites on the Internet.  The latest IBM 8225 private MIB is also available

  from these sites under the file name 8225MIB.EXE.

                                       ___________



  To get the microcode from the BBS:



  1.  Prepare your computer to call the IBM PC Company BBS.



      You need a computer with a modem and communications software in order to

      make the call.  The BBS auto-senses the speed of your modem, supporting

      speeds between 1200 and 14 400 bps.  Make sure that your communications

      software is set to use 8 data bits, no parity, 1 stop bit, and no flow

      control.



  2.  Dial (919) 517-0001.



      If you are a first-time user, you will be prompted for your first and

      last names, and then you will be asked to enter a password.  You might

      want to write your password in the following space.





      +--- YOUR PASSWORD -----------------------------------------------------+

      |                                                                       |

      | IBM Personal Computer Company BBS password: _________________         |

      |                                                                       |

      +-----------------------------------------------------------------------+



  3.  Find the file containing the microcode and download it to your computer.



      Using the BBS' search facility, search for 8225.  The name of the

                                                 ____

      microcode file will be in the format 8225xddd.EXE, where:

                                           ____________



          x is a letter indicating the target product type: S for SNMP, or

          _                                                 _

          Model 002, and R for RMON, or Model 003.

                         _



          ddd is a 3-digit number that indicates the microcode version.

          ___



      Return to the main menu, and then use your communications program to

      transfer the microcode file to your computer.  If your communications

      software offers the option, download the file in binary form.

                                                       ______



      NOTE:  For convenience and to avoid overwriting existing files, you might

      want to place the file into a temporary subdirectory that you create for

      the purpose.



  4.  Decompress the microcode file.



      At a DOS or OS/2 command prompt, enter 8225XDDD, where x is the target

                                                             _

      product and ddd is the appropriate version number, and the compressed

                  ___

      file will decompress into two files:





                                          Chapter 3.  8225 Administration  3-51





      o   The microcode file, IBMxddd.IMG

                              ___________

      o   A README file, README.TXT

                         __________





  3-52  8225 Hub Installation and Planning Guide





  To get the files from the Internet:



  1.  Access the IBM PC Company anonymous ftp site:



      o   If you are using a Web browser, the URL is:



            ftp://ftp.pc.ibm.com



      o   If you are using a command-line invocation of FTP, the address is:



            ftp.pc.ibm.com



  2.  The files are in the pub/pccbbs/network subdirectory.

                           __________________



  3.  If the software you are using provides the option, download the files in

      binary form.

      ______



      NOTE:  For convenience and to avoid overwriting existing files, you might

      want to place the file in a temporary subdirectory that you create for

      the purpose.



  4.  Decompress the files as outlined in step 4 under "Getting New Microcode"

      on page 3-51.





  MANAGEMENT USING TELNET

  _______________________



  You can access your 8225 using Telnet, either in-band, over an Ethernet

  connection or out-of-band, using SLIP.



  When you connect using Telnet, you will see the user interface that has

  already been documented in this chapter.





  CONFIGURING FOR SLIP



  The 8225 management unit supports two IP addresses, one for Ethernet and one

  for the serial line.  When configuring your 8225, these addresses are entered

  on the Segment Configuration panel (see Figure 3-10 on page 3-15) in the IP

  Address and Serial IP fields, respectively.  Both of these addresses share a

  common subnet mask.  In order for SLIP to function, both IP addresses must be

  on the same network.  If the subnet mask is "255.255.255.0", you might

  configure the two addresses "9.123.1.9" (Ethernet IP address) and

  "9.123.1.10" (serial line IP address).  If the addresses are on the same

  network, the first three portions of the IP address must be identical.



  Another requirement is that the SLIP client/host (the PC or device that is

  connected to the 8225 by a serial link) must use the same IP address and

  subnet mask as the 8225 Serial Line IP.  Using the above example, the address

  and subnet mask for the SLIP client/host must be "9.123.1.10" and

  "255.255.255.0", respectively.





                                          Chapter 3.  8225 Administration  3-53





  PREPARING FOR SNMP MANAGEMENT

  _____________________________



  SNMP management requires that you have a managed stack: that is, that your

  stack contain at least one 8225 Model 002 or Model 003.  Model 002

  incorporates an SNMP agent and Model 003 incorporates an RMON agent that

  implements the SNMP protocol.



  Model 002 supports the following MIBs:



  o   MIB II (RFC1213)

  o   Repeater MIB (RFC1516)

  o   Ethernet MIB (RFC1623)

  o   Novell Hub MIB

  o   IBM 8225 Private MIB



  Model 003 supports all of the above, as well as the RMON MIB.



  These MIBS can be managed by most network management applications, including

  IBM Nways Manager for Windows, Nways Campus Manager LAN for AIX, and Nways

  Campus LAN for HP/UX.  The 8225 supports SNMP/IPX and Novell HMI

  specifications, enabling this system to be integrated seamlessly into the

  NetWare environment.



  Before you can use an SNMP-based network management application, you must

  configure your primary 8225 management agent using either the user interface

  program or BootP.  For information on the user interface program, see "The

  8225 User Interface Program" on page 3-1.





  SETTING AN IP ADDRESS USING BOOTP



  If you have selected one of the BootP options on the Hub Configuration panel

  (Figure 3-12 on page 3-18), the 8225 automatically sends out BootP requests

  every 6 seconds for up to 2 minutes after a power-up.  The BootP  request

  contains the MAC address of the 8225.



  The requests seek a BootP server, which you must have previously configured

  with an address resolution table containing MAC addresses and corresponding

          ________________________

  IP addresses.  When the BootP server receives the request, it sends an IP

  address to the requesting 8225's MAC address.



  NOTE:  BootP requests will not pass through routers.



  BootP servers vary from manufacturer to manufacturer, so use the following

  example for reference only.  Refer to your BootP server's documentation for

  specific instructions.





  3-54  8225 Hub Installation and Planning Guide





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |  ibvdddmmmmmmmmmmmm:\                                                            |

  |  HT=ethernet:\                                                                   |

  |  HA=mmmmmmmmmmmm:\                                                               |

  |  IP=ddd.ddd.ddd.ddd:\                                                            |

  |  SM=ddd.ddd.ddd.ddd:\                                                            |

  |  GW=ddd.ddd.ddd.ddd                                                              |

  |                                                                                  |

  |                                                                                  |



  Figure  3-31. A Sample BootP Configuration File



  In the preceding example, the first line is the locally administered name of

  the device that will receive the IP address, "HT" is its hardware type, "HA"

  is its MAC address, "IP" is its IP address, "SM" is its IP subnet mask, and

  "GW" is its default gateway, or default router, address.





                                          Chapter 3.  8225 Administration  3-55





  3-56  8225 Hub Installation and Planning Guide





  CHAPTER 4.  TROUBLESHOOTING AND SERVICE

  _______________________________________





  This chapter provides diagnostic techniques and a Parts and Features catalog

  for the IBM 8225 Fast Ethernet Stackable Hub.





  PROBLEM DETERMINATION

  _____________________



  There are three methods of problem determination for the 8225:



  1.  Observe the LED indicators.  See "LED Symptom and Fix Listing" for a list

      of symptoms and fixes.



  2.  Swap hubs within the stack.  See "Hot-Swapping 8225s" on page 4-4 for a

      description of how to hot-swap an 8225 in the stack.



  3.  Observe the results of the diagnostic power-on self-test (POST) by

      connecting a terminal to the management port.  See "Problem Determination

      Through the Management Port" on page 4-4 for more information.





  LED SYMPTOM AND FIX LISTING



  +---------------------------------------------------------------------------+

  | Table  4-1 (Page 1 of 3). LED Symptom/Fix Table                           |

  +-------------------------------------+-------------------------------------+

  | SYMPTOM                             | FIX                                 |

  +-------------------------------------+-------------------------------------+

  | During POST, one or more            | Normal power-on activity is for all |

  | LINK/ACTIVITY LEDs remains ON       | LEDs to blink ON for 1 second and   |

  | during the test.  If a failure is   | then for each LINK/ACTIVITY LED to  |

  | detected, all the PARTITION LEDs    | blink in sequence, from the first   |

  | blink ON and OFF for 1-2 seconds at | to the last.  If any LINK/ACTIVITY  |

  | the end of the POST and one or more | LED remains ON, perform the         |

  | LINK/ACTIVITY LEDs remain ON.       | following actions:                  |

  |                                     |                                     |

  |                                     |     For ports 1-6; replace the      |

  |                                     |     8225.                           |

  |                                     |                                     |

  |                                     |     For ports 7-12; replace the     |

  |                                     |     Fast Expansion Module.  If no   |

  |                                     |     Fast Expansion Module is        |

  |                                     |     present, ignore LEDs 7-12.      |

  +-------------------------------------+-------------------------------------+





  (C) Copyright IBM Corp. 1996                                              4-1





  +---------------------------------------------------------------------------+

  | Table  4-1 (Page 2 of 3). LED Symptom/Fix Table                           |

  +-------------------------------------+-------------------------------------+

  | SYMPTOM                             | FIX                                 |

  +-------------------------------------+-------------------------------------+

  | Two hubs in a managed stack display | NOTE:  In an unmanaged stack, the   |

                                                       _________

  | the same ID number.                 | ID numbers of the hubs in the stack |

  |                                     | are not significant.                |

  |                                     |                                     |

  |                                     | The physical stack is logically     |

  |                                     | divided into more than one stack    |

  |                                     | with each having one or more        |

  |                                     | management hubs.  Check for loose   |

  |                                     | or disconnected hub interconnect    |

  |                                     | cables.                             |

  +-------------------------------------+-------------------------------------+

  | A hub displays no ID number, or the | Meaningful numbers are 0-6.  Verify |

  | hub displays no meaningful ID       | that power is applied to the hub.   |

  | number.                             | The POWER 1 LED should be ON.  If   |

  |                                     | no problem is found, replace the    |

  |                                     | failing hub.  If there is no        |

  |                                     | change, replace the primary         |

  |                                     | management hub in the stack.  The   |

  |                                     | primary management hub displays the |

  |                                     | PRIM LED ON.                        |

  +-------------------------------------+-------------------------------------+

  | Two or more hubs that are in the    | The physical stack is segmented     |

  | same backplane of a stack have the  | into more than one logical stack    |

  | PRIM LED ON.                        | with each having one or more        |

  |                                     | management hubs.  Check for loose   |

  |                                     | or disconnected hub interconnect    |

  |                                     | cables.  Replace the hub with the   |

  |                                     | Prim LED ON that is logically       |

  |                                     | lowest in the stack.  To determine  |

  |                                     | which is logically lowest, you can  |

  |                                     | look at the hub interconnect cables |

  |                                     | to see how they are attached.       |

  +-------------------------------------+-------------------------------------+

  | The FEM LED is OFF, although power  | o   Replace the Fast Expansion      |

  | is ON and a Fast Expansion Module   |     Module.                         |

  | is installed.                       | o   Replace the 8225.               |

  +-------------------------------------+-------------------------------------+

  | The POWER 1 LED is OFF, or if a     |     Verify ac power.                |

  | second power module is installed,   |                                     |

  | the POWER 2 LED is OFF.             |     Replace the primary or backup   |

  |                                     |     power module.  (If only one     |

  |                                     |     power module is installed, the  |

  |                                     |     LED for the unused power module |

  |                                     |     position should be OFF.)  The   |

  |                                     |     primary module is the leftmost  |

  |                                     |     module when viewed from the     |

  |                                     |     rear of the 8225.               |

  +-------------------------------------+-------------------------------------+





  4-2  8225 Hub Installation and Planning Guide





  +---------------------------------------------------------------------------+

  | Table  4-1 (Page 3 of 3). LED Symptom/Fix Table                           |

  +-------------------------------------+-------------------------------------+

  | SYMPTOM                             | FIX                                 |

  +-------------------------------------+-------------------------------------+

  | The POWER 1 or the POWER 2 LED is   | o   Check the fan in the power      |

  | blinking.                           |     module.  If the fan has         |

  |                                     |     stopped, replace the power      |

  |                                     |     module.                         |

  |                                     |                                     |

  |                                     | o   In a machine that has two power |

  |                                     |     modules, verify that the ac     |

  |                                     |     power cables to both power      |

                                                              ____

  |                                     |     modules are not loose or        |

  |                                     |     missing.                        |

  |                                     |                                     |

  |                                     | o   Verify that the ac power source |

  |                                     |     is active and within the        |

  |                                     |     correct range (100-240 Vac).    |

  |                                     |                                     |

  |                                     | o   Replace the failing power       |

  |                                     |     module indicated by the         |

  |                                     |     blinking LED.  The Power 1      |

  |                                     |     module is the leftmost module   |

  |                                     |     when viewed from the rear of    |

  |                                     |     the 8225.                       |

  +-------------------------------------+-------------------------------------+

  | A Model 002 or Model 003 8225 does  | Verify that the hub is correctly    |

  | not have either the PRIM or the     | connected to the other hubs in the  |

  | BKUP LED ON.                        | stack and that it has power.  If no |

  |                                     | problem is found, replace the       |

  |                                     | following elements in order:        |

  |                                     |                                     |

  |                                     | 1.  The SIMM on the management      |

  |                                     |     board                           |

  |                                     | 2.  The management board in the     |

  |                                     |     8225                            |

  |                                     | 3.  The 8225.                       |

  +-------------------------------------+-------------------------------------+



  The management board, found in Models 002 and 003, contains three LEDs,

  called Power, Fail, and Watchdog.  You must remove the cover of the 8225 to

  observe these LEDs.  The POWER LED should be ON, the FAIL LED should be OFF,

  and the WATCHDOG LED should blink during repeater activity.  If your 8225 is

  not working correctly and any of these is failing, replace the management

  board.





                                   Chapter 4.  Troubleshooting and Service  4-3





  HOT-SWAPPING 8225S



  You can disconnect the hub interconnect cable from an 8225 and plug it into a

  replacement 8225 without powering off the other 8225s in the stack (that is,

  you can hot-swap 8225s).



  If you hot-swap an 8225, the ports will take 1 or 2 minutes to resynchronize;

  however, each 8225 performs repeater functions normally while

  resynchronizing.  All Ethernet traffic will be disrupted during the time that

  interhub cabling is not fully connected.



  To hot-swap an 8225:



  1.  Disconnect the power cord from the ac outlet and then from the 8225 that

      is to be replaced.



  2.  Unplug all the cables connected to the hub that is being replaced, making

      sure to label the cables so that you will know where to reconnect them.



  3.  If the 8225 you are removing from the stack has a Fast Expansion Module,

      and the replacement does not, remove the Fast Expansion Module from its

      slot and install it in the replacement 8225.



      NOTE:  Make sure that the power to an 8225 is disconnected before you

      remove or install its Fast Expansion Module.



  4.  Connect the cables to the ports in the replacement 8225.



  5.  Connect the power cord to the 8225 and then connect the other end to the

      ac outlet.





  PROBLEM DETERMINATION THROUGH THE MANAGEMENT PORT



  When power is applied to an 8225 hub, a set of self-tests is performed.  To

  review the results of these tests, you can connect a computer that has a

  terminal emulation program to the Management port, remove power from the 8225

  to be tested, and then reconnect power.  The result of the self-test is

  displayed on the terminal.  For details about terminal emulation programs see

  Chapter 3, "8225 Administration" on page 3-1.





  4-4  8225 Hub Installation and Planning Guide





  SAMPLE 1





  +----------------------------------------------------------------------------------+

  |                                                                                  |

  |                                                                                  |

  |                                                                                  |

  | IBM 8225 Fast Ethernet Stackable Hub Model 001                                   |

  | Power-up System Self-Diagnostic Process                                          |

  | vn.nn mm-dd-yy (C)Copyright IBM corp.                                            |

  |                                                                                  |

  |                                                                                  |

  | SYSTEM TESTS :                                                                   |

  | ----------------------------------                                               |

  | Boot EPROM checksum test ... Pass!                                               |

  | EEPROM test ... Pass!                                                            |

  | System SRAM test ... Pass!                                                       |

  | Repeater Information Base test ... Pass!                                         |

  | Repeater Interface Controller test ... Pass!                                     |

  | Fast Ethernet Module test ... Pass!                                              |

  | ----------------------------------                                               |

  | SYSTEM TESTS COMPLETED                                                           |

  |                                                                                  |

  |                                                                                  |

  | Press any key to continue ...                                                    |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  4-1. Example Self-Test Results for Model 001





                                   Chapter 4.  Troubleshooting and Service  4-5





  SAMPLE 2



  You can scroll up and down in this display.  The following is typical of the

  display when you power ON a management hub.



  +----------------------------------------------------------------------------------+

  |                                                                                  |

  | Console I/O test ...                                                             |

  |      !"#%&'()*+,--./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ                  |

  |      \&caret._'abcdefghijklmnopqrstuvwxyz{|}~                                  |

  |                                                                                  |

  | Flash ROM test ...                                                               |

  |      Checksum test passed                                                        |

  | EEPROM test ...                                                                  |

  |      Checksum test passed                                                        |

  | DRAM test ...                                                                    |

  |      Address ripple test passed                                                  |

  |      Walking 0 test passed                                                       |

  |      Walking 0 test passed                                                       |

  |      Refresh test passed                                                         |

  | SRAM test ...                                                                    |

  |      Address ripple test passed                                                  |

  |      Walking 0 test passed                                                       |

  |      Walking 0 test passed                                                       |

  |      Refresh test passed                                                         |

  |                                                                                  |

  | Output FIFO testing OK ! SIZE 1024 bytes                                         |

  | Input FIFO testing OK ! SIZE 1024 bytes                                          |

  |                                                                                  |

  | ----------------------------------                                               |

  | SYSTEM TESTS COMPLETED                                                           |

  |                                                                                  |

  |                                                                                  |

  | Press any key to continue ...                                                    |

  |                                                                                  |

  +----------------------------------------------------------------------------------+



  Figure  4-2. Example Self-Test Results for Model 002 or Model 003



  If any of the tests indicates FAIL, replace the FRU indicated in the

  following list.



  BOOT EPROM CHECKSUM TEST -- Replace the 8225.



  EEPROM TEST -- Replace the 8225.



  SYSTEM SRAM TEST -- Replace the 8225.



  REPEATER INFORMATION BASE TEST -- Replace the 8225.



  REPEATER INTERFACE CONTROLLER TEST -- Replace the 8225.



  FAST ETHERNET MODULE TEST -- Replace the Fast Expansion Module.





  4-6  8225 Hub Installation and Planning Guide





  PARTS REMOVAL AND REPLACEMENT PROCEDURES

  ________________________________________



  Following is the list of replaceable parts in the 8225.  If any other part of

  the 8225 is damaged or defective, then the 8225 must be replaced.



  o   4-MB SIMM

  o   AC power cable

  o   Cable management bracket

  o   Fan (base machine)

  o   Hub interconnect cable

  o   Fast Expansion Module

  o   Management board

  o   Mounting-bracket hardware

  o   Power module



  NOTES:



  1.  Power cords, power modules, and Fast Expansion Modules do not come with

      replacement 8225s.  When you replace an 8225, you must transfer these

      from the old 8225 to the new one.  Refer to "Management Board

      Replacement" and to "Power Module Replacement" on page 4-13 for more

      information.



  2.  Replacement management boards do not include a new memory SIMM.  You must

      transfer the SIMM to the new Fast Expansion Module.  Refer to "SIMM

      Memory Replacement" on page 4-9 for instructions.



  3.  The fan in the power module is not a replaceable part.  If this fan fails

      you must replace the power module.





  8225 HUB REPLACEMENT



  To replace an 8225, perform the steps under "Hot-Swapping 8225s" on page 4-4.





  MANAGEMENT BOARD REPLACEMENT



  This procedure is applicable to 8225 Models 002 and 003 only.



  The part number of the management board is printed on the top surface, near

  the front of the 8225.



  1.  Remove power to the 8225 by disconnecting the ac cable from the outlet

      and then from the back of the 8225.  If your 8225 has two power modules,

      disconnect both power cables, using the same process.



  2.  Disconnect the hub interconnect cables from the connectors marked UP and

      DOWN.



  3.  Remove the 8225's top cover by following these steps.



      A.  Remove the three top-cover screws and mounting bracket on each side

          of the 8225 shown in Figure 4-3.





                                   Chapter 4.  Troubleshooting and Service  4-7





  .



  Figure  4-3. Removing the Top-Cover Screws



      B.  Remove the five cover screws on the back of the unit, shown in

          Figure 4-4.



  .



  Figure  4-4. Back View: Removing the Five Cover Screws



      C.  Grasp the top cover of the 8225 at the back of the machine and slide

          it approximately 6 mm. (0.25 in.) toward the back.  Lift the back of

          the cover, making sure that the back edge clears the connectors

          marked UP and DOWN on the back of the 8225.



          Remove the top cover and set it aside.



  4.  Disconnect the two-wire fan power cable from its position on the

      management board.



  .



  Figure  4-5. Disconnect Fan Power Connector



  5.  Remove the eight screws that hold the management board in place.



      When the screws have been removed, lift the board firmly from the sides

      to disconnect the management board from the 8225.



  6.  To install the new management board, remove it from its packaging and

      place it carefully in position, making sure that all of the screw holes

      are aligned.



  7.  Firmly press the pressure area of the new management board, shown in

      Figure 4-5, to fully seat the connectors.



  8.  Start all of the screws in their respective holes and then tighten all

      the screws.



  9.  Replacement management boards do not include a new memory SIMM.  To

      transfer the SIMM to the new Fast Expansion Module:



      o   Disconnect the old SIMM from the management board by compressing the

          clip on each side of the SIMM, moving the top of the SIMM to a

          vertical position and then lifting the SIMM up and out of its slot,

          as shown.  See Figure 4-10.



  .



  Figure  4-6. SIMM Removal



      o   Install the new SIMM by sliding it into the slot and rotating the top

          to the back, as shown.  Make sure that the clips snap into place.





  4-8  8225 Hub Installation and Planning Guide





  .



  Figure  4-7. SIMM Replacement



  10. Connect the fan's power connector to the connector pins marked FAN on the

      new management board.



  11. Replace the cover by reversing the actions in step 3.  Note that both

      sides of the top cover fit inside the edges of the bottom cover.

                                 ______



  12. Connect the hub interconnect cables.



  13. Connect ac power by attaching the power cord to the 8225 and then to the

      ac outlet.  If you have two power modules, connect both ac power cords in

      the same manner.





  SIMM MEMORY REPLACEMENT



  1.  Remove power to the 8225 by disconnecting the ac cable from the outlet

      and then from the back of the 8225.  If your 8225 has two power modules,

      disconnect both power cables, using the same process.



  2.  Disconnect the hub interconnect cables from the connectors marked Up and

                                                                        __

      Down on the back of the 8225.

      ____



  3.  Remove the 8225's top cover by following these steps.



      a.  Remove the three top-cover screws and mounting bracket on each side

          of the 8225 shown in Figure 4-8.



  .



  Figure  4-8. Removing the Top-Cover Screws



      b.  Remove the five cover screws on the back of the unit, shown in

          Figure 4-9.



  .



  Figure  4-9. Back View: Removing the Five Cover Screws



      c.  Grasp the top cover of the 8225 at the back of the machine and slide

          it approximately 6 mm. (0.25 in.) toward the back.  Lift the back of

          the cover, making sure that the back edge clears the connectors

          marked UP and DOWN on the back of the 8225.



          Set the top cover aside.



  .



  Figure  4-10. View of Management board and SIMM





                                   Chapter 4.  Troubleshooting and Service  4-9





  4.  Disconnect the old SIMM from the management board by compressing the clip

      on each side of the SIMM, rotating the top of the SIMM to a vertical

      position and then lifting the SIMM up and out of its slot, as shown.  See

      Figure 4-10.



  .



  Figure  4-11. SIMM Removal



  5.  Install the new SIMM by sliding it into the slot, and rotating the top to

      the back, as shown.  Make sure the clips snap into place.



  .



  Figure  4-12. SIMM Replacement



  6.  Replace the cover by reversing the steps in step 3 on page 4-9.  Note

      that both sides of the top cover fit inside the edges of the bottom

                                           ______

      cover.



  7.  Connect the hub interconnect cables.



  8.  Connect ac power by attaching the power cord to the 8225 and then to the

      ac outlet.  If you have two power modules, then reconnect both ac cables

      in the same manner.





  FAST EXPANSION MODULE REPLACEMENT



  NOTE:  Fast Expansion Modules are NOT hot-swappable.  You must remove power

  to the 8225 before replacing the Fast Expansion Module.



  1.  Remove power from the 8225 by disconnecting the power cable from the ac

      outlet and then from the back of the 8225.  If your 8225 has two ac power

      cables, disconnect both power cables before continuing.

              ____________________________



  2.  Remove the existing Fast Expansion Module by turning the two knurled

      knobs on the front of the module counterclockwise.  Slide the old module

      out of the 8225.



  3.  Insert the new Fast Expansion Module, ensuring that the edges slide

      through the guides, until the connector end is firmly seated.



  4.  Turn the two knurled knobs on the new Fast Expansion Module clockwise

      until they are securely attached to the 8225 frame.



  5.  Reconnect the communications cable to the new Fast Expansion Module.



  6.  Reconnect the ac power cable to the wall outlet.  If your 8225 has two

      power modules, connect both ac power cables.





  Figure  4-13. Three Fast Expansion Module Types





  4-10  8225 Hub Installation and Planning Guide





  Verify Fast Expansion Module operation as follows:



  O   Observe the indicators on the front panel of the 8225.



          The FEM indicator should be ON.

          The Power 1 indicator should be ON.  If your 8225 has two power

          modules, the Power 2 indicator should be ON as well.

          The ID indicator should display a value.

          The BP-1, the BP-2, or the BP-3 indicator should be ON.



  O   Observe the LEDs on the Fast Expansion Module.  The module's LEDs should

      display the current activity.  Depending on which Fast Expansion Module

      you have installed, and your network configuration, some of the following

      conditions might be indicated:



      FDX       When this LED is on, communication through the Fast Expansion

                Module is in full-duplex mode.



      COL       Blinking of this LED indicates that collisions are occurring in

                this collision domain.



      TX        Blinking of this LED indicates that data is being transmitted

                by the 8225, through the Fast Expansion Module.



      RX        Blinking of this LED indicates that data is being received by

                the 8225, through the Fast Expansion Module.



      LINK      This LED indicates that a link is complete from the Fast

                Expansion Module to another device.



      100       This LED indicates that 100BASE-TX communication is occurring.

                This LED is present on the 10BASE-T/100BASE-TX Fast Expansion

                Module only.



  ATTENTION: If you remove a Fast Expansion Module without replacing it with

  another, then you must replace the blank cover over the empty slot for proper

  cooling of the 8225.





  FAN REPLACEMENT



  1.  Remove power to the 8225 by disconnecting the ac cable from the ac outlet

      and then from the back of the 8225.  If your 8225 has two power modules,

      disconnect both power cables, using the same process.



  2.  Disconnect the hub interconnect cables from the connectors marked UP and

      DOWN.  Note their location, so that they can be replaced later.



  3.  Remove the 8225's top cover by following these steps.



      a.  Remove the three mounting-bracket screws on each side of the 8225,

          shown in Figure 4-14.





                                  Chapter 4.  Troubleshooting and Service  4-11





  .



  Figure  4-14. Removing the Mounting-Bracket Screws



      b.  Remove the five cover screws on the back of the unit, shown in

          Figure 4-15.



  .



  Figure  4-15. 8225 Back View



      c.  Grasp the top cover of the 8225 at the back of the machine and slide

          it approximately 6 mm. (0.25 in.) toward the back.  Lift the back of

          the cover, making sure that the back edge clears the connectors

          marked Up and Down on the back of the 8225.

                 __     ____



          Remove the top cover and set it aside.



      NOTE:  The power module in your 8225 has a built-in fan, which is not

      replaceable.  If this fan has failed, the power module must be replaced.



  4.  Disconnect the two-wire fan power cable from its position on the

      management board.



  5.  Remove the two screws that hold the fan and the fan plate to the 8225.

      These are indicated in Figure 4-16.  Retain the fan plate.





  Figure  4-16. Fan Replacement



  6.  Set the new fan and the fan plate in the 8225.  The arrow on the fan goes

      on top, pointing toward the back of the unit.  Make sure to fit the

      bottom edge of the fan plate in the slot provided.



  7.  Replace the two fan mounting screws removed in step 5.



  8.  Connect the new fan's power cable to the connector pins from which the

      old fan's power cable was removed.



  9.  Replace the cover by reversing the actions in step 3.  Note that both

      sides of the top cover fit inside the edges of the bottom cover.

                                 ______



  10. Connect the hub interconnect cables.



  11. Connect ac power by attaching the power cable to the 8225 and then to the

      ac outlet.  If your 8225 has two power cables, reconnect both of them in

      the same manner.





  4-12  8225 Hub Installation and Planning Guide





  POWER MODULE REPLACEMENT



  1.  Remove power from the Power Module by disconnecting the power cable from

      the ac outlet and then from the back of the power module that is to be

      replaced.



      NOTE:  If the 8225 has two power modules installed, it is not necessary

      to remove power from the other module while replacing the failing power

      module.



  2.  Loosen the two knurled knobs on the power module that is to be replaced

      by turning them counterclockwise.  See Figure 4-17.  Firmly pull the

      power module toward the back of the 8225 until it is free.





  Figure  4-17. Loosen the Knurled Knobs



  3.  Insert the new power module, ensuring that the edges slide through the

      guides until the connector end is firmly seated.



  4.  Turn the two knurled knobs on the new power module clockwise until they

      are securely attached to the 8225 frame.



  5.  Connect the ac power cable to the power module and then to the wall

      outlet.  If your 8225 has two power modules, reconnect both of them in

      the same manner.





                                  Chapter 4.  Troubleshooting and Service  4-13





  Verify that your new power module is functioning correctly by checking the

  following conditions:



  o   Verify that the power module's fan is turning.



  o   Observe the Power 1 and the Power 2 indicators on the 8225 front panel.

      One of them should be ON.  If you have two power modules installed, both

      of them should be ON.



  ATTENTION: If you remove a power module without replacing it with another,

  then you must replace the blank cover over the empty slot for proper cooling

  of the 8225.





  4-14  8225 Hub Installation and Planning Guide





  8225 PARTS CATALOG

  __________________



  The following table gives the part numbers for replacement and optional

  parts.



  +---------------------------------------------------------------------------+

  | Table  4-2. Field-Replaceable Parts List                                  |

  +-------+--------------------------------------------------+----------------+

  | ITEM  |                                                  |                |

  | NAME  | PART NAME                                        | REPLACEMENT    |

  |       |                                                  | PART NUMBER    |

  +-------+--------------------------------------------------+----------------+

  | 1a    | 8225 Model 001                                   | 42H3756        |

  +-------+--------------------------------------------------+----------------+

  | 1b    | 8225 Model 002                                   | 42H3760        |

  +-------+--------------------------------------------------+----------------+

  | 1c    | 8225 Model 003                                   | 42H4541        |

  +-------+--------------------------------------------------+----------------+

  | 2a    | Fast Expansion Module (10BASE-T/100BASE-TX)      | 85H3826        |

  +-------+--------------------------------------------------+----------------+

  | 2b    | Fast Expansion Module (100BASE-FX)               | 85H3827        |

  +-------+--------------------------------------------------+----------------+

  | 2c    | Fast Expansion Module (100BASE-T4)               | 85H3828        |

  +-------+--------------------------------------------------+----------------+

  | 3     | Rack-mounting hardware (includes two brackets    | 42H4462        |

  |       | and four screws)                                 |                |

  +-------+--------------------------------------------------+----------------+

  | 4     | Hub interconnect cable                           | 85H3832        |

  +-------+--------------------------------------------------+----------------+

  | 5     | Power module                                     | 85H3831        |

  +-------+--------------------------------------------------+----------------+

  | 6     | Fan assembly                                     | 85H3868        |

  +-------+--------------------------------------------------+----------------+

  |       | Screw M3x30, flat head, fan                      | 1621292        |

  +-------+--------------------------------------------------+----------------+

  | 7a    | Model 002 management agent board (SNMP)          | 85H3829        |

  +-------+--------------------------------------------------+----------------+

  | 7b    | Model 003 management agent board (RMON)          | 85H3830        |

  +-------+--------------------------------------------------+----------------+

  |       | Screw M3x6, pan, Phillips head                   | 1624852        |

  |       | for mounting Management Agent board              |                |

  +-------+--------------------------------------------------+----------------+

  | 8     | SIMM memory, 4 MB                                | 92G7540        |

  +-------+--------------------------------------------------+----------------+

  | 9     | Cable Management Bracket                         | 13H8966        |

  +-------+--------------------------------------------------+----------------+

  |       | Screw M3x6, flat head, cover                     | 1621285        |

  +-------+--------------------------------------------------+----------------+



  NOTE:  A label on the left front of the 8225 indicates the model number.





  Figure  4-18. 8225 Field-replaceable Parts





                                  Chapter 4.  Troubleshooting and Service  4-15





  AVAILABLE FEATURES FOR YOUR 8225



  You can purchase upgrades for your 8225s, using the following features list.



  +---------------------------------------------------------------------------+

  | Table  4-3. Features That Can Be Purchased                                |

  +------------------------------------------------------+----------+---------+

  | FEATURE NAME                                         | FEATURE  | FEATURE |

  |                                                      | CODE     | PART    |

  |                                                      |          | NUMBER  |

  +------------------------------------------------------+----------+---------+

  | Management Upgrade, Model 001 to Model 002           | 4530     | 42H4530 |

  +------------------------------------------------------+----------+---------+

  | Management Upgrade, Model 001 or Model 002 to Model  | 4534     | 42H4534 |

  | 003                                                  |          |         |

  +------------------------------------------------------+----------+---------+

  | Fast Expansion Module Kit, 10BASE-T/100BASE-TX       | 3744     | 42H3744 |

  +------------------------------------------------------+----------+---------+

  | Fast Expansion Module Kit, 100BASE-FX                | 3748     | 42H3748 |

  +------------------------------------------------------+----------+---------+

  | Fast Expansion Module Kit, 100BASE-T4                | 4527     | 42H4527 |

  +------------------------------------------------------+----------+---------+

  | Hub Interconnect Cable Assembly                      | 3754     | 42H3754 |

  +------------------------------------------------------+----------+---------+

  | Redundant Power Module Feature (includes power cord) | 3751     | See     |

  |                                                      |          | Table 4-|.

  +------------------------------------------------------+----------+---------+





  Redundant Power Module Feature Table





  4-16  8225 Hub Installation and Planning Guide





  +---------------------------------------------------------------------------+

  | Table  4-4. Redundant Power Module Upgrades by Country                    |

  +------------------------------------------------------------+--------------+

  | COUNTRY                                                    | FEATURE PART |

  |                                                            | NUMBER       |

  +------------------------------------------------------------+--------------+

  | U.S., Brazil, Canada, Latin America, Asia/Pacific          | 42H3751      |

  +------------------------------------------------------------+--------------+

  | Japan                                                      | 85H3858      |

  +------------------------------------------------------------+--------------+

  | Angola, Austria, Belgium, Bulgaria, Egypt, Finland,        | 85H3857      |

  | France, Germany, Greece, Hungary, Iceland, Iran, Lebanon,  |              |

  | Luxembourg, Mozambique, Netherlands, Norway, Poland,       |              |

  | Portugal, Romania, Spain, Sudan, Sweden, Syrian Arab,      |              |

  | Turkey, Zaire                                              |              |

  +------------------------------------------------------------+--------------+

  | Bahrain, Cyprus, Ghana, Iraq, Ireland, Jordan, Kenya,      | 85H3859      |

  | Kuwait, Libya, Malawi, Malta, Nigeria, Oman, Quatar,       |              |

  | Sierra Leone, Somalia, Tanzania, Uganda, United Arab       |              |

  | Emirates, United Kingdom, Yemen, Zambia                    |              |

  +------------------------------------------------------------+--------------+

  | Denmark                                                    | 85H3860      |

  +------------------------------------------------------------+--------------+

  | Italy, Ethiopia                                            | 85H3861      |

  +------------------------------------------------------------+--------------+

  | Switzerland                                                | 85H3862      |

  +------------------------------------------------------------+--------------+

  | Israel                                                     | 85H3863      |

  +------------------------------------------------------------+--------------+

  | South Africa, Pakistan, Namibia, Swaziland, Zimbabwe       | 85H3864      |

  +------------------------------------------------------------+--------------+

  | Liberia, Saudi Arabia                                      | 85H3865      |

  +------------------------------------------------------------+--------------+





  8225 Power Cords Table





                                  Chapter 4.  Troubleshooting and Service  4-17





  +---------------------------------------------------------------------------+

  | Table  4-5. 8225 Power Cords by Country                                   |

  +------------------------------------------------------------+--------------+

  | COUNTRY                                                    | PART NUMBER  |

  +------------------------------------------------------------+--------------+

  | U.S., Brazil, Canada, Latin America, Asia/Pacific          | 6952301      |

  +------------------------------------------------------------+--------------+

  | Japan                                                      | 34G0232      |

  +------------------------------------------------------------+--------------+

  | Angola, Austria, Belgium, Bulgaria, Egypt, Finland,        | 13F9978      |

  | France, Germany, Greece, Hungary, Iceland, Iran, Lebanon,  |              |

  | Luxembourg, Mozambique, Netherlands, Norway, Poland,       |              |

  | Portugal, Romania, Spain, Sudan, Sweden, Syrian Arab,      |              |

  | Turkey, Zaire                                              |              |

  +------------------------------------------------------------+--------------+

  | Bahrain, Cyprus, Ghana, Iraq, Ireland, Jordan, Kenya,      | 14F0032      |

  | Kuwait, Libya, Malawi, Malta, Nigeria, Oman, Quatar,       |              |

  | Sierra Leone, Somalia, Tanzania, Uganda, United Arab       |              |

  | Emirates, United Kingdom, Yemen, Zambia                    |              |

  +------------------------------------------------------------+--------------+

  | Denmark                                                    | 13F9996      |

  +------------------------------------------------------------+--------------+

  | Italy, Ethiopia                                            | 14F0068      |

  +------------------------------------------------------------+--------------+

  | Switzerland                                                | 14F0050      |

  +------------------------------------------------------------+--------------+

  | Israel                                                     | 14F0086      |

  +------------------------------------------------------------+--------------+

  | South Africa, Pakistan, Namibia, Swaziland, Zimbabwe       | 14F0014      |

  +------------------------------------------------------------+--------------+

  | Liberia, Saudi Arabia                                      | 6952301      |

  +------------------------------------------------------------+--------------+





  4-18  8225 Hub Installation and Planning Guide





  HELP AND WARRANTY SERVICE INFORMATION

  _____________________________________



  During the warranty period, you can get toll-free technical support 24 hours

  a day, 7 days a week, to answer any questions about your new 8225.  If you

  need warranty service, you are entitled to on-site service for one year from

  the date of purchase.



  Before calling, please prepare for your call by following these steps.





  STEP 1:  TROUBLESHOOTING



  You might be able to solve the problem yourself.  Before calling IBM, try the

  following troubleshooting procedures.



  1.  Test the power outlet to be sure power is present.



  2.  Determine whether or not the fan is running.



  3.  Remove and reattach all cables, checking cables, connectors, and ports

      for damage.



  4.  Remove and reseat any Fast Expansion Modules, if applicable.



  5.  Verify that all configuration settings are correct.



  6.  Review all portions of this manual that pertain to the installation or

      replacement of features and be sure that you have followed all

      procedures.



  7.  After completing these steps, reassemble the 8225 and reconnect the power

      cord to the 8225 and then to the ac outlet.





  STEP 2:  PREPARING FOR THE CALL



  To assist the technical support representative, have as much of the following

  information as possible available:



  1.  Product name, description, and serial number (if any)



  2.  Proof of purchase



  3.  Status of the LEDs



  4.  Description of the problem



  5.  Exact wording of SNMP traps (if any)



  6.  Hardware and software configuration information for your system



  If possible, be at your 8225.  Your technical support representative might

  want to walk you through a procedure during the call.





                                  Chapter 4.  Troubleshooting and Service  4-19





  STEP 3:  PLACING THE CALL TO IBM



  Use one of the following numbers:



  &TELEPHONE. In the United States, call the IBM Service Center at

      1-800-426-7378.



      If you want a copy of the latest 8225 microcode or an updated IBM MIB,

      you can download these directly from the IBM PC Company BBS at

      1-919-517-0001, their WWW site at http://www.pc.ibm.com., or their

      anonymous FTP site at ftp.pc.ibm.com.



  &TELEPHONE. In Canada, call HelpPC at 1-800-565-3344.



  &TELEPHONE. Outside the United States and Canada, contact your place of

      purchase or your local IBM branch office.





  4-20  8225 Hub Installation and Planning Guide





  APPENDIX A.  CABLE PINOUT DIAGRAMS

  __________________________________





  STRAIGHT-THROUGH 100BASE-TX CABLES

  __________________________________



  100BASE-T connections to devices such as workstations and servers require

  straight-through cables, as shown schematically in Figure A-2 for UTP and

  Figure A-3 on page A-2 for STP.



  Two standards are shown for wiring UTP connectors, T568-A and T568-B.  The

  only difference between them is in the color of the insulation around the

  wires.





  Figure  A-1. Straight-Through UTP Cable (RJ-45 to RJ-45), T568-A





  Figure  A-2. Straight-Through UTP Cable (RJ-45 to RJ-45), T568-B





  (C) Copyright IBM Corp. 1996                                              A-1





  STRAIGHT-THROUGH 100BASE-TX CABLES FOR STP





  Figure  A-3. Straight-Through STP Cable (RJ-45 to IBM Data Connector)





  CROSSOVER 100BASE-TX CABLES

  ___________________________



  Crossover cables are typically required when making 100BASE-T connections to

  ________________

  other hubs.  The 8225 does not require crossover cables, but if you need

                                 _______

  them, Figure A-5 and Figure A-6 show you how to wire the connectors.



  Two standards are shown for wiring UTP connectors, T568-A and T568-B.  The

  only difference between them is in the color of the insulation around the

  wires.





  Figure  A-4. Crossover UTP Cable (RJ-45 to RJ-45), T568-A





  Figure  A-5. Crossover UTP Cable (RJ-45 to RJ-45), T568-B





  CROSSOVER 100BASE-TX CABLES FOR STP





  Figure  A-6. Crossover STP Cable (RJ-45 to IBM Data Connector)





  A-2  8225 Hub Installation and Planning Guide





  APPENDIX B.  THE IBM 8225 MANAGEMENT INFORMATION BASE

  _____________________________________________________





  NOTE:  A copy of the latest IBM 8225 MIB can be obtained through the IBM

  Personal Computer Company BBS.  Follow the steps in "Getting New Microcode"

  on page 3-51.



  The IBM 8225 product supports the following standard MIBs:



  1.  RFC1213 (MIB II)

      a.  System Group

      b.  Interfaces Group

      c.  Address Translation Group

      d.  IP Group

      e.  ICMP Group

      f.  UDP Group

      g.  SNMP Group

  2.  RFC1516 - Definitions of Managed Objects for IEEE 802.3 Repeater Devices

  3.  RFC1643 - Definitions of Ethernet Like Objects



  In addition, the 8225 supports the objects defined in this MIB.





    Version 1.17



    August 19, 1996



    The IBM 8225 product supports the following standard MIBs:



        RFC1213 (MIB II)

            System Group

            Interfaces Group

            Address Translation Group

            IP Group

            ICMP Group

            UDP Group

            SNMP Group

        RFC1516 - Definitions of Managed Objects for IEEE 802.3 Repeater Devices

        RFC1643 - Definitions of Ethernet Like Objects



    In addition, the 8225 supports the objects defined in this MIB.



    IBM-8225-MIB DEFINITIONS ::= BEGIN



    IMPORTS

            enterprises,

            Counter, TimeTicks, IpAddress

            FROM RFC1155-SMI;



    IMPORTS

            DisplayString





  (C) Copyright IBM Corp. 1996                                              B-1





            FROM RFC1213-MIB;



    IMPORTS

            OBJECT-TYPE

            FROM RFC-1212;



        IpxAddress ::= OCTET STRING (SIZE(10))



    ibm                     OBJECT IDENTIFIER ::= { enterprises 2 }

    ibmProd                 OBJECT IDENTIFIER ::= { ibm 6 }

    ibm8225                 OBJECT IDENTIFIER ::= { ibmProd 37 }



    products                OBJECT IDENTIFIER ::= { ibm8225 1 }

    ibm8225-1               OBJECT IDENTIFIER ::= { products 1 }

    ibm8225-2               OBJECT IDENTIFIER ::= { products 2 }

    ibm8225-3               OBJECT IDENTIFIER ::= { products 3 }



    snmpMgt                 OBJECT IDENTIFIER ::= { ibm8225 2 }

    systemInfo              OBJECT IDENTIFIER ::= { snmpMgt 1 }

    stackInfo               OBJECT IDENTIFIER ::= { snmpMgt 2 }





        --

        -- Community Group.

        --     The community group defines the community strings

        --     accepted by the system.

        --

        communityMgt        OBJECT IDENTIFIER ::= { systemInfo 1 }



        communityStringSize OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Length of the community string."

            ::= { communityMgt 1 }



        communityTableSize OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Size of the community table."

            ::= { communityMgt 2}



        communityTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF CommunityEntry

            ACCESS  not-accessible

            STATUS  mandatory

            DESCRIPTION  "Community table."

            ::= { communityMgt 3 }



        communityEntry OBJECT-TYPE

            SYNTAX  CommunityEntry

            ACCESS  not-accessible

            STATUS  mandatory





  B-2  8225 Hub Installation and Planning Guide





            INDEX   { communityIndex }

            ::= { communityTable 1 }



        CommunityEntry ::= SEQUENCE

            {

                communityIndex

                    INTEGER,

                communityString

                    DisplayString,

                communityAccessMode

                    INTEGER,

                communityStatus

                    INTEGER

             }



        communityIndex OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Index of the community table."

            ::= { communityEntry 1 }



        communityString OBJECT-TYPE

            SYNTAX  DisplayString

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Community string; the length is limited by

                          communityStringSize."

            ::= { communityEntry 2 }



        communityAccessMode OBJECT-TYPE

            SYNTAX  INTEGER {

                              read-only(1),

                              read-write(2)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Access mode of the community.  If the access mode

                          is read-only, all other community tables are

                          unreachable."

            ::= { communityEntry 3 }



        communityStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                              invalid(1),

                              valid(2)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Administration status of this community.

                          SNMP requests will be accepted when the community

                          string matches and the community status is valid."

            ::= { communityEntry 4 }





                     Appendix B.  The IBM 8225 Management Information Base  B-3





        --

        -- Trap manager group

        --

        --   The trap manager group is used to define the nodes which can receive

        --   the trap messages sent by the agent.

        --

        trapManagerMgt      OBJECT IDENTIFIER ::= { systemInfo 2 }



        ipTrapManagerMgt    OBJECT IDENTIFIER ::= { trapManagerMgt 1 }

        ipxTrapManagerMgt   OBJECT IDENTIFIER ::= { trapManagerMgt 2 }



        --

        -- IP trap manager group

        --



        ipTrapManagerTableSize OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Size of the IP trap manager table."

            ::= { ipTrapManagerMgt 1 }



        ipTrapManagerTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF IpTrapManagerEntry

            ACCESS  not-accessible

            STATUS  mandatory

            DESCRIPTION  "IP trap manager table."

             ::= { ipTrapManagerMgt 2 }



        ipTrapManagerEntry OBJECT-TYPE

            SYNTAX  IpTrapManagerEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { ipTrapManagerIndex }

             ::= { ipTrapManagerTable 1 }



        IpTrapManagerEntry ::= SEQUENCE

            {

                 ipTrapManagerIndex

                    INTEGER,

                 ipTrapManagerCommunityIndex

                    INTEGER,

                 ipTrapManagerIpaddress

                    IpAddress,

                 ipTrapManagerEntryStatus

                    INTEGER

            }



        ipTrapManagerIndex OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Index of the trap manager table."

            ::= { ipTrapManagerEntry 1 }





  B-4  8225 Hub Installation and Planning Guide





        ipTrapManagerCommunityIndex OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Community string specified by the index

                          in the community table."

            ::= { ipTrapManagerEntry 2 }



         ipTrapManagerIpaddress OBJECT-TYPE

            SYNTAX IpAddress

            ACCESS read-write

            STATUS mandatory

            DESCRIPTION  "IP address of the network manager."

            ::=  { ipTrapManagerEntry 3 }



        ipTrapManagerStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                              invalid(1),

                              valid(2)

                            }

            ACCESS   read-write

            STATUS   mandatory

            DESCRIPTION  "Entries marked valid can receive the trap message

                          generated by the agent."

            ::= { ipTrapManagerEntry 4 }



        --

        -- IPX trap manager group

        --



        ipxTrapManagerTableSize OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Size of the IPX trap manager table."

            ::= { ipxTrapManagerMgt 1 }



        ipxTrapManagerTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF IpxTrapManagerEntry

            ACCESS  not-accessible

            STATUS  mandatory

            DESCRIPTION  "IPX trap manager table."

             ::= { ipxTrapManagerMgt 2 }



        ipxTrapManagerEntry OBJECT-TYPE

            SYNTAX  IpxTrapManagerEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { ipxTrapManagerIndex }

             ::= { ipxTrapManagerTable 1 }



        IpxTrapManagerEntry ::= SEQUENCE

            {





                     Appendix B.  The IBM 8225 Management Information Base  B-5





                 ipxTrapManagerIndex

                    INTEGER,

                 ipxTrapManagerCommunityIndex

                    INTEGER,

                 ipxTrapManagerIpxaddress

                    IpxAddress,

                 ipxTrapManagerEntryStatus

                    INTEGER

            }



        ipxTrapManagerIndex OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Index of the IPX trap manager table."

            ::= { ipxTrapManagerEntry 1 }



        ipxTrapManagerCommunityIndex OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Community string specified by the index

                          in the community table."

            ::= { ipxTrapManagerEntry 2 }



        ipxTrapManagerIpxaddress OBJECT-TYPE

            SYNTAX IpxAddress

            ACCESS read-write

            STATUS mandatory

            DESCRIPTION  "IPX address of the IPX network manager.  The IPX

                          address consists of two parts: a network number

                          and a MAC address.  This must be entered in dotted-

                          hexadecimal notation.  For example, to enter the

                          IPX address consisting of network number 00000001

                          and MAC address 10005a790006, use

                          0.0.0.1.10.00.5a.79.00.06. (This assumes that the

                          network manager which you are using accepts this type of

                          hexadecimal notation. If not, you will need to convert

                          these numbers into decimal.)"

            ::=  { ipxTrapManagerEntry 3 }



        ipxTrapMgrStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                              invalid(1),

                              valid(2)

                            }

            ACCESS   read-write

            STATUS   mandatory

            DESCRIPTION  "Entries marked valid can receive the trap message

                          generated by the agent."

            ::= { ipxTrapManagerEntry 4 }





        --





  B-6  8225 Hub Installation and Planning Guide





        --  Download Group

        --

        --   The download group is used to trigger download operation of the

        --   agent device to get a new version of software with TFTP protocol

        --   from a server computer. The manager can select to upgrade

        --   software temporarily or permanently, and to run new software

        --   immediately or at the next power-up.

        --

        downloadMgt         OBJECT IDENTIFIER ::= { systemInfo 3 }



        downloadServerIP OBJECT-TYPE

            SYNTAX  IpAddress

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "IP address of the file server of the download file."

            ::= { downloadMgt 1 }



        downloadFilename OBJECT-TYPE

            SYNTAX  OCTET STRING (SIZE (0..127))

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "File name to download."

            ::= { downloadMgt 2 }



        downloadMode OBJECT-TYPE

            SYNTAX  INTEGER {

                             permanent(1),

                             temporary(2)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Permanent upgrade stores download software into

                          permanent storage of the agent device. Temporary

                          upgrade puts download software only in RAM, often

                          for a test only."

            ::= { downloadMgt 3 }



         downloadAction OBJECT-TYPE

            SYNTAX  INTEGER {

                             notDownloading(1),

                             downloading (2)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Setting this object to downloading(2) initiates a TFTP

                          download of the agent.  The agent will download the new

                          image from the server specified by downloadServerIP.

                          The download file name is specified by downloadFilename."

            ::= { downloadMgt 4}





        --

        -- IP auto-discovery Group.

        --     The IP auto-discovery group defines the IP auto-discovery





                     Appendix B.  The IBM 8225 Management Information Base  B-7





        --     feature of the SNMP-managed device.  The feature operates

        --     as follows:

        --

        --     (1) The SNMP-managed device sends the auto-discovery

        --         trap at a time interval selected by the user.

        --     (2) Traps are sent until an SNMP Get, Get Next or Set

        --         request frame is received. The reception of an SNMP

        --         request frame indicates that the device has been discovered

        --         by the network management station.

        --     (3) Once an SNMP get request frame is received, a 'watchdog

        --         timer' selected by the user is started.

        --         When an SNMP request frame has not been received from

        --         the management station during the watchdog time

        --         interval.  The management station has lost contact, then

        --         the managed device sends the auto-discovery trap again.

        --



        autodiscovery       OBJECT IDENTIFIER ::= { systemInfo 4 }



        ipAutoDiscovery     OBJECT IDENTIFIER ::= { autodiscovery 1 }

        ipxAutoDiscovery    OBJECT IDENTIFIER ::= { autodiscovery 2 }



        ipAutoDiscoveryStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                              enabled(1),

                              disabled(2)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "Setting this object to enabled(1) enables IP auto-

                         discovery feature."

            ::= { ipAutoDiscovery 1 }



        ipAutoDiscoveryInterval OBJECT-TYPE

            SYNTAX  INTEGER (1..60)

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "The time interval in minutes for the SNMP managed

                         device to send the auto-discovery trap."

            ::= { ipAutoDiscovery 2 }



        ipAutoDiscoveryWatchDogInterval OBJECT-TYPE

            SYNTAX  INTEGER (1..24)

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "The time interval in hours for the SNMP managed

                         device to monitor for loss of contact with the

                         management station."

            ::= { ipAutoDiscovery 3 }





        --

        -- IPX auto-discovery Group.

        --     The IPX auto-discovery group is accomplished by the IPX SAP





  B-8  8225 Hub Installation and Planning Guide





        --     broadcasting.  The following objects define the IPX SAP

        --     broadcasting parameters.

        --

        ipxAutoDiscoveryStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                              enabled(1),

                              disabled(2)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "Setting this object to enabled(1) enables IPX SAP

                         broadcasting."

            ::= { ipxAutoDiscovery 1 }



        ipxAutoDiscoveryInterval OBJECT-TYPE

            SYNTAX  INTEGER (1..60)

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "The time interval in minutes for the SNMP managed

                         device to broadcast the IPX SAP response frame."

            ::= { ipxAutoDiscovery 2 }





    --

    -- Stack information group; this group is classified into four groups:

    -- the basic group, the monitor group, the backup group, and the security

    -- group.

    --

            basicInfo               OBJECT IDENTIFIER ::= { stackInfo 1 }

            monitorInfo             OBJECT IDENTIFIER ::= { stackInfo 2 }

            backupPortInfo          OBJECT IDENTIFIER ::= { stackInfo 3 }

            securityInfo            OBJECT IDENTIFIER ::= { stackInfo 4 }





        --

        -- Basic Stack Object

        --

            basicStack              OBJECT IDENTIFIER ::= { basicInfo 1 }



        basicStackHealth OBJECT-TYPE

            SYNTAX  OCTET STRING ( SIZE (114) )

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "



               < FOR IBM 8225 DEFINITION : >



               114 bytes (total for 6 hubs) = 6 hub * (12 + 1 + 6) bytes

                   |

               byte114 byte113....................byte2 byte1

                                                          |

                                                        bit7 bit6 ... bit1 bit0



               (6 bit + 2 bit) * 12 port = 12 bytes





                     Appendix B.  The IBM 8225 Management Information Base  B-9





               BYTE 1 - 12 : port status for port 1 - 12



                       *BYTE 1 : port status for port 1



                          bit 0-5 : LED status

                                  bit 0 : link status

                                          0 - no link; 1 - link

                                  bit 1 : partition status

                                          0 - partitioned; 1 - not partitioned

                                  bit 2 : port operation status

                                          0 - disabled; 1 - enabled

                                  bit 3-5 : traffic status

                                         000 - no traffic

                                         001 - 1% traffic

                                         010 - 5% traffic

                                         011 - 10% traffic

                                         100 - 25% traffic

                                         101 - 40% traffic

                                         110 - 65% traffic

                                         111 - 80% traffic



                          bit 6 : port admin status

                                    0 - disabled; 1 - enabled



                          bit 7 : reserved



               BYTE 13 : FEM port status



                          bit 0-3 : LED status

                                  bit 0 : link status

                                          0 - no link; 1 - link

                                  bit 1 : half/full duplex status

                                          0 - full duplex ; 1 - half duplex

                                  bit 2 : port operation status

                                          0 - disabled; 1 - enabled

                                  bit 3 : port speed

                                          0 - 10 Mbps; 1 - 100 Mbps



                          bit 4-5 :

                                  bit 4 : tx led status

                                          0 - off; 1 - tx on

                                  bit 5 : rx led status

                                          0 - off; 1 - rx on



                          bit 6-7 : port type

                                 00 - 100BASE-TX

                                 01 - 100BASE-T4

                                 10 - 100BASE-FX

                                 11 - not present



               BYTE 14 : Network management module status



                         bit 0 - 3 : NMM type





  B-10  8225 Hub Installation and Planning Guide





                                 0000 - no NMM

                                 0001 - ibm8225-002

                                 0010 - ibm8225-003

                          bit 4 : master status

                                  0 - subordinate; 1 - master

                          bit 5 - 6 : NMM segment number

                                  00  - reserved

                                  01  - 1

                                  10  - 2

                                  11  - 3

                          bit 7 : reserved



               BYTE 15 : Segment/HubID/HubPosition



                         bit 0 - 1 : Segment

                                   00 - isolated

                                   01 - segment 1

                                   10 - segment 2

                                   11 - segment 3

                         bit 2 - 4 : hub ID status

                                  000 - none

                                  001 - 1

                                  010 - 2

                                  011 - 3

                                  100 - 4

                                  101 - 5

                                  110 - 6

                         bit 5 - 7 : hub position

                                  000 - reserved

                                  001 - 1

                                  010 - 2

                                  011 - 3

                                  100 - 4

                                  101 - 5

                                  110 - 6



               BYTE 16 : utilization and collision rate



                         bit 0 - 3 : utilization LED status

                                  0000 - none

                                  0001 - 1 %

                                  0010 - 5  %

                                  0011 - 15 %

                                  0100 - 30 %

                                  0101 - >= 65 %

                         bit 4 - 7 : collision LED status

                                  0000 - none

                                  0001 - 1 %

                                  0010 - 3 %

                                  0011 - 5 %

                                  0100 - 10 %

                                  0101 - >= 15 %



               BYTE 17 : POWER/ISO/TERM/..





                    Appendix B.  The IBM 8225 Management Information Base  B-11





                         bit 0: primary power module status

                                  0 - not present; 1 - present

                         bit 1: secondary power module status

                                  0 - not present; 1 - present

                         bit 2: primary power module operation status

                                  0 - failure;     1 - operational

                         bit 3: secondary power module operation status

                                  0 - failure;     1 - operational



                         bit 4 : FEM port admin status

                                  0 - disabled; 1 - enabled



                         bit 5: termination status

                                  0 - not end hub

                                  1 - end hub in the stack



                         bit 6: FEM port collision led status

                                  0 - off; 1 - on



                         bit 7: FEM back pressure status

                                  0 - disabled; 1 - enabled



               BYTE 18 : reserved



                          bit 0-1 : hub ports type

                                 00 - 100BASE-TX

                                 01 - 100BASE-T4

                                 10 - 100BASE-FX

                                 11 - not present



                          bit 2-3 : FEM port forwarding mode status

                                 00 - adaptive cut through

                                 01 - reserved

                                 10 - reserved

                                 11 - store and forward



                          bit 4-7 : reserved



               BYTE 19:  reserved"



            ::= { basicStack 1 }





        --

        -- Basic Segment Object

        --

        basicSegmentTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF BasicSegmentEntry

            ACCESS  not-accessible

            STATUS  mandatory

            DESCRIPTION  "A segment means a common collision domain."

            ::= { basicInfo 2 }



        basicSegmentEntry OBJECT-TYPE





  B-12  8225 Hub Installation and Planning Guide





            SYNTAX  BasicSegmentEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { basicSegmentIndex }

            ::= { basicSegmentTable 1 }



        BasicSegmentEntry ::= SEQUENCE

            {

                basicSegmentIndex

                    INTEGER,

                basicSegmentProtocol

                    INTEGER,

                basicSegmentIpAddr

                    IpAddress,

                basicSegmentNetMask

                    IpAddress,

                basicSegmentGateway

                    IpAddress,

                basicSegmentSlipAddr

                    IpAddress,

                basicSegmentReset

                    INTEGER,

                basicSegmentIpxFrame

                    INTEGER,

                basicSegmentIntIpxNet

                    OCTET STRING,

                basicSegmentName

                    DisplayString

            }



        basicSegmentIndex OBJECT-TYPE

            SYNTAX  INTEGER (1..3)

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Backplane bus number of the segment."

            ::= { basicSegmentEntry 1 }



        basicSegmentProtocol OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "For protocol stack definition :



                         bit 0: IP protocol stack

                                0: disabled;  1: enabled

                         bit 1: IPX protocol stack

                                0: disabled;  1: enabled

                         bit 2: SNMP over Ethernet

                                0: disabled;  1: enabled"

            ::= { basicSegmentEntry 2 }



        basicSegmentIpAddr OBJECT-TYPE

            SYNTAX  IpAddress

            ACCESS  read-write





                    Appendix B.  The IBM 8225 Management Information Base  B-13





            STATUS  mandatory

            DESCRIPTION  "IP address of this segment.

                          The corresponding definition in each segment of

                          the network management module (NMM).  Because the

                          IBM 8225 is a multi-home host (device has

                          multiple interfaces without routing capability),

                          each segment of the 8225 has its own interface

                          parameters, such as the IP address.  When the NMM

                          switches to another segment, the interface parameters

                          are changed.  The interface parameters are defined

                          in the following variables."

            ::= { basicSegmentEntry 3 }



        basicSegmentNetMask OBJECT-TYPE

            SYNTAX  IpAddress

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "IP netmask of this segment."

            ::= { basicSegmentEntry 4 }



        basicSegmentGateway OBJECT-TYPE

            SYNTAX  IpAddress

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Preferred gateway of this segment."

            ::= { basicSegmentEntry 5 }



        basicSegmentSlipAddr OBJECT-TYPE

            SYNTAX  IpAddress

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "SLIP address of this segment. The SLIP must

                          reside in the same subnet as the basicSegmentIpAddress."

            ::= { basicSegmentEntry 6 }



        basicSegmentReset  OBJECT-TYPE

            SYNTAX  INTEGER {

                              notreset(1),

                              reset(2)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Setting the basicSegmentIpAddr, basicSegmentNetMask,

                   basicSegmentGateway, and basicSegmentSlipAddr will not make

                   the system use these parameters immediately.  Setting the

                   basicSegmentReset to reset(2) will cause the 8225 to use the

                   new values."

            ::= { basicSegmentEntry 7 }



        basicSegmentIpxFrame OBJECT-TYPE

            SYNTAX  INTEGER {

                             ethernet8023-frame(1),

                             ethernetii-frame(2),

                             ethernet8022-frame(3),





  B-14  8225 Hub Installation and Planning Guide





                             ethernetsnap-frame(4),

                             auto-learn(5),

                             auto-learn-ipx8023-frame(6),

                             auto-learn-ipx8137-frame(7),

                             auto-learn-ipx8022-frame(8),

                             auto-learn-ipxsnap-frame(9)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Default IPX frame type of the system. Four

                          types of IPX frame support.  You can

                          set this object within the values from

                          ethernet8023-frame(1) to auto-learn(5) only.



                          Setting this object to auto-learn(5) lets the system

                          find the IPX frame type automatically. The result

                          of auto-learn is reflected as follows:

                             auto-learn-ipx8023-frame(6),

                             auto-learn-ipx8137-frame(7),

                             auto-learn-ipx8022-frame(8) and

                             auto-learn-ipxsnap-frame(9).



                          Setting to these four values is not acceptable;

                          'snmpBadValue' will be returned."





            ::= { basicSegmentEntry 8 }



        basicSegmentIntIpxNet OBJECT-TYPE

            SYNTAX  OCTET STRING (SIZE (4))

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Internal IPX network of the segment."



            ::= { basicSegmentEntry 9 }



        --

        -- { basicSegmentEntry 10 } is not used now.

        -- The orignial definitions is:

        --    basicSegmentIpxSapInterval OBJECT-TYPE

        --        SYNTAX  INTEGER (1..1440)

        --        ACCESS  read-write

        --        STATUS  mandatory

        --        DESCRIPTION  "The interval in minutes over which the IPX SAP

        --                      broadcast is sent.  The value infinite-time(1440)

        --                      means disable the SAP broadcast."

        --        ::= { basicSegmentEntry 10 }

        --



        basicSegmentName OBJECT-TYPE

            SYNTAX  DisplayString (SIZE (0..12))

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Mnemonic name of the segment."





                    Appendix B.  The IBM 8225 Management Information Base  B-15





            ::= { basicSegmentEntry 11 }





        --

        -- Basic Group Object - Hub control information

        --

        basicGroup              OBJECT IDENTIFIER ::= { basicInfo 3 }





        basicHubTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF BasicHubEntry

            ACCESS  not-accessible

            STATUS  mandatory

            DESCRIPTION  "A group means a hub unit."

            ::= { basicGroup 1 }



        basicHubEntry OBJECT-TYPE

            SYNTAX  BasicHubEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { basicHubIndex }

            ::= { basicHubTable 1 }



        BasicHubEntry ::= SEQUENCE

            {

                basicHubIndex

                    INTEGER,

                basicHubType

                    INTEGER,

                basicHubPosition

                    INTEGER,

                basicHubSegment

                    INTEGER,

                basicHubName

                    DisplayString,

                basicHubHwVer

                    INTEGER,

                basicHubFwMajorVer

                    INTEGER,

                basicHubFwMinorVer

                    INTEGER

            }



        basicHubIndex OBJECT-TYPE

            SYNTAX  INTEGER (1..6)

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "ID number of a hub unit, used to select it."

            ::= { basicHubEntry 1 }



        basicHubType OBJECT-TYPE

            SYNTAX  INTEGER {

                             ibm8225-1(1),

                             ibm8225-2(2),





  B-16  8225 Hub Installation and Planning Guide





                             ibm8225-3(3),

                             not-present(1000)

                            }

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Type of hub unit."

            ::= { basicHubEntry 2 }



        basicHubPosition OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Physical position of a hub unit in top-down order."

            ::= { basicHubEntry 3 }



        basicHubSegment OBJECT-TYPE

            SYNTAX  INTEGER (0..3)

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Bus number of the backplane to which the hub unit

                          is connected. Value 0 means that the hub is isolated,

                          not attached to any segment."





            ::= { basicHubEntry 4 }



        basicHubName OBJECT-TYPE

            SYNTAX  DisplayString (SIZE (0..12))

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Mnemonic name of a hub unit."

            ::= { basicHubEntry 5 }



        basicHubHwVer OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Hardware version of the hub."

            ::= { basicHubEntry 6 }



        basicHubFwMajorVer OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Microcode major version of the repeater board."

            ::= { basicHubEntry 7 }



        basicHubFwMinorVer OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Microcode minor version of the repeater board."

            ::= { basicHubEntry 8 }





                    Appendix B.  The IBM 8225 Management Information Base  B-17





        --

        -- Basic Group Object - NMM control information

        --

        basicNmmTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF BasicNmmEntry

            ACCESS  not-accessible

            STATUS  mandatory

            DESCRIPTION  "NMM unit table information; the index is the same

                          as the index of basicGroupTable."

            ::= { basicGroup 2 }



        basicNmmEntry OBJECT-TYPE

            SYNTAX  BasicNmmEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { basicNmmHubIndex }

            ::= { basicNmmTable 1 }



        BasicNmmEntry ::= SEQUENCE

            {

                basicNmmHubIndex

                    INTEGER,

                basicNmmType

                    INTEGER,

                basicNmmHwVer

                    INTEGER,

                basicNmmFwMajorVer

                    INTEGER,

                basicNmmFwMinorVer

                    INTEGER,

                basicNmmSegment

                    INTEGER,

                basicNmmPhysAddr

                    PhysAddress,

                basicNmmBootupOption

                    INTEGER,

                basicNmmStatus

                    INTEGER

            }





        basicNmmHubIndex OBJECT-TYPE

            SYNTAX  INTEGER (1..6)

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "ID number of a hub unit, used to select it."

            ::= { basicNmmEntry 1 }



        basicNmmType OBJECT-TYPE

            SYNTAX  INTEGER {

                             not-present(1),

                             sc3552(2),

                             sc3553(3)





  B-18  8225 Hub Installation and Planning Guide





                            }

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Management board model number. If the value of

                          nmmType is not-present(1), the MIB variable below in

                          this branch is meaningless."

            ::= { basicNmmEntry 2 }



        basicNmmHwVer OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Hardware version of the NMM."

            ::= { basicNmmEntry 3 }



        basicNmmFwMajorVer OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Microcode major version of the NMM."

            ::= { basicNmmEntry 4 }



        basicNmmFwMinorVer OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Microcode minor version of the NMM."

            ::= { basicNmmEntry 5 }



        basicNmmSegment OBJECT-TYPE

            SYNTAX  INTEGER ( 1..3 )

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Segment ID of the NMM."

            ::= { basicNmmEntry 6 }



        basicNmmPhysAddr OBJECT-TYPE

            SYNTAX  PhysAddress

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Address of the NMM."

            ::= { basicNmmEntry 7 }



        basicNmmBootupOption OBJECT-TYPE

            SYNTAX  INTEGER {

                              normal(1),

                              tftp-download(2),

                              bootp-get-ip(3),

                              bootp-download(4),

                              no-bootp-tftp-request(5),

                              bootp-upgrade(6)

                            }

            ACCESS  read-write

            STATUS  mandatory





                    Appendix B.  The IBM 8225 Management Information Base  B-19





            DESCRIPTION  "This variable defines how to start the microcode

                          in the segment.

                          normal(1):  Use NVRAM information and flash ROM

                                      microcode to start up the system.

                          tftp-download(2):

                                      Always download the new version of

                                      microcode into RAM and start it.

                          bootp-get-ip(3):

                                      Get the IP information from the BootP server,

                                      and then start up the microcode in flash ROM.

                          bootp-download(4):

                                      Get the IP information from the BootP server,

                                      and then download the microcode from the

                                      TFTP server.

                          no-bootp-tftp-request(5):

                                      Shut down the BootP and TFTP request, even

                                      though the IP information or the microcode

                                      in flash ROM is corrupt.  If you want to

                                      download from out-of-band, set to 5.

                          bootp-upgrade(6):

                                      Get the IP information from the BootP server,

                                      and then download the microcode from the

                                      TFTP server.  After download has completed,

                                      upgrade the microcode in system flash ROM."



            ::= { basicNmmEntry 8 }





        basicNmmStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                             not-present(1),

                             master(2),

                             backup(3),

                             backup-takeover(4)

                            }

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Status of this NMM entry.  Each segment allows

                          an SNMP master.

                          master(2): The agent in this segment is a master agent.

                          backup(3): The agent in this segment is a backup agent."

            ::= { basicNmmEntry 9 }





        --

        --  Basic FEM object

        --

        basicFemTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF BasicFemEntry

            ACCESS  not-accessible

            STATUS  mandatory

            DESCRIPTION  "Basic information about FEM ports in a system.

                          Each port belongs to a group.  The group index

                          is the same as the group index of the





  B-20  8225 Hub Installation and Planning Guide





                          basicPortTable: that is, basicPortGroupIndex."

            ::= { basicGroup 3 }



        basicFemEntry OBJECT-TYPE

            SYNTAX  BasicFemEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { basicFemHubIndex }

            ::= { basicFemTable 1 }



        BasicFemEntry ::= SEQUENCE

            {

                basicFemHubIndex

                    INTEGER,

                basicFemType

                    INTEGER,

                basicFemLinkStatus

                    INTEGER,

                basicFemAdminStatus

                    INTEGER,

                basicFemOperStatus

                    INTEGER,

                basicFemDuplexStatus

                    INTEGER,

                basicFemBackPressureStatus

                    INTEGER,

                basicFemForwardingMode

                    INTEGER,

                basicFemSpeed

                    INTEGER,

                basicFemName

                    DisplayString

            }



        basicFemHubIndex OBJECT-TYPE

            SYNTAX  INTEGER (1..6)

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "ID number of a hub unit, used to select it."

            ::= { basicFemEntry 1 }



        basicFemType OBJECT-TYPE

            SYNTAX  INTEGER {

                             100base-tx(1),

                             100base-t4(2),

                             100base-fx(3),

                             not-present(4)

                            }

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Port type of the FEM port."

            ::= { basicFemEntry 2 }



        basicFemLinkStatus OBJECT-TYPE





                    Appendix B.  The IBM 8225 Management Information Base  B-21





            SYNTAX  INTEGER {

                             goodlink(1),

                             badlink(2)

                            }

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Link status of the FEM port."

            ::= { basicFemEntry 3 }



        basicFemAdminStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                             enabled(1),

                             disabled(2)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "Setting this object to disabled(2) disables the FEM

                         port.  A disabled port neither transmits nor receives.

                         Once disabled, a port must be explicitly enabled to

                         restore operation.  The FEM port that is disabled

                         when power is lost or when a reset is performed shall

                         remain disabled when normal operation resumes."

            ::= { basicFemEntry 4 }



        basicFemOperStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                             operational(1),

                             notOperational(2),

                             notPresent(3)

                            }

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "This object indicates the port's operational status.

                         The notPresent(3) status indicates the port is

                         physically removed.



                         The operational(1) status indicates that the port

                         is enabled (see basicFemAdminStatus) and working."

            ::= { basicFemEntry 5 }



        basicFemDuplexStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                             half-duplex(1),

                             full-duplex(2),

                             auto-negotiation(3),

                             negotiated-half-duplex(4),

                             negotiated-full-duplex(5)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "Setting this object to full-duplex(2) enables the FEM

                         port for full-duplex mode, so that the port can send

                         and receive frames at the same time.  For a 100BASE-T4

                         FEM port, setting to full-duplex is meaningless.





  B-22  8225 Hub Installation and Planning Guide





                         The actual status will be half-duplex.



                         Setting this object to auto-negotiation(3) lets the

                         transceiver decide the duplex status of the port.

                         The result of the auto-negotiation is reflected as

                         negotiated-half-duplex(4) or negotiated-full-duplex(5).

                         Setting to the two values is not valid;  'snmpBadValue'

                         will be returned."

            ::= { basicFemEntry 6 }



        basicFemBackPressureStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                             enabled(1),

                             disabled(2)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "Setting this object to enabled(1) enables the FEM

                         jamming back feature.  When the output queue is

                         full, the FEM port will generate a jam pattern

                         back to the source network.



                         Setting this object to disabled(1) lets the FEM

                         port discard the input frames of the source network

                         when the output queue is full."

            ::= { basicFemEntry 7 }



        basicFemForwardingMode OBJECT-TYPE

            SYNTAX  INTEGER {

                             store-and-forward(1),

                             adaptive-cut-through(2)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "Setting this object to store-and-forward(1) makes

                         the FEM port receive the whole packet before

                         forwarding the packets.



                         Setting this object to adaptive-cut-through(2) makes

                         the system forward the packets as quickly as the

                         transmission quality of the destination network will

                         allow."

            ::= { basicFemEntry 8 }



        basicFemSpeed OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "Reflecting the speed of the FEM port.  The line speed

                         is determined by the auto-negotiation mechanism of

                         the transceiver of the FEM port. Currently, there are

                         two values - 10000000 (10BASE) and 100000000(100BASE)."

            ::= { basicFemEntry 9 }





                    Appendix B.  The IBM 8225 Management Information Base  B-23





        basicFemName OBJECT-TYPE

            SYNTAX  DisplayString (SIZE (0..12))

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Mnemonic name of the FEM port."

            ::= { basicFemEntry 10 }





        --

        -- Power Object - Power module control information

        --

        basicPowerTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF basicPowerEntry

            ACCESS  not-accessible

            STATUS  mandatory

            DESCRIPTION  "Power module table information; the index is the same

                          as the index of the basicGroupTable"

            ::= { basicGroup 4 }



        basicPowerEntry OBJECT-TYPE

            SYNTAX  BasicPowerEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { basicPowerHubIndex, basicPowerIndex }

            ::= { basicPowerTable 1 }



        BasicPowerEntry ::= SEQUENCE

            {

                basicPowerHubIndex

                    INTEGER,

                basicPowerIndex

                    INTEGER,

                basicPowerStatus

                    INTEGER

            }



        basicPowerHubIndex OBJECT-TYPE

            SYNTAX  INTEGER (1..6)

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "ID number of a hub unit, used to select it."

            ::= { basicPowerEntry 1 }



        basicPowerIndex OBJECT-TYPE

            SYNTAX  INTEGER (1..2)

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "ID number of the power module of the hub."

            ::= { basicPowerEntry 2 }



        basicPowerStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                             not-present(1),





  B-24  8225 Hub Installation and Planning Guide





                             operational(2),

                             failure(3)

                            }

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Status of this power entry.  The values are as

                          follows:



                          not-present(1): The power module is not present.

                          operational(2): The power module is working normally.

                          failure: the power module is failing."

            ::= { basicPowerEntry 3 }





        --

        --  Basic Port Object

        --

            basicPort               OBJECT IDENTIFIER ::= { basicInfo 4 }



        basicPortTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF BasicPortEntry

            ACCESS  not-accessible

            STATUS  mandatory

            DESCRIPTION  "Basic information about ports in a system.

                          Each port belongs to a group."

            ::= { basicPort 1 }



        basicPortEntry OBJECT-TYPE

            SYNTAX  BasicPortEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { basicPortHubIndex, basicPortIndex }

            ::= { basicPortTable 1 }



        BasicPortEntry ::= SEQUENCE

            {

                basicPortHubIndex

                    INTEGER,

                basicPortIndex

                    INTEGER,

                basicPortType

                    INTEGER,

                basicPortLinkStatus

                    INTEGER,

                basicPortName

                    DisplayString

            }





        basicPortHubIndex OBJECT-TYPE

            SYNTAX  INTEGER ( 1..6 )

            ACCESS  read-only





                    Appendix B.  The IBM 8225 Management Information Base  B-25





            STATUS  mandatory

            DESCRIPTION  "Index of the hub unit."

            ::= { basicPortEntry 1 }



        basicPortIndex OBJECT-TYPE

            SYNTAX  INTEGER ( 1..12 )

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Port number."

            ::= { basicPortEntry 2 }



        basicPortType OBJECT-TYPE

            SYNTAX  INTEGER {

                             100base-tx(1),

                             100base-t4(2),

                             100base-fx(3),

                             not-present(4)

                            }

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Port type of a port."

            ::= { basicPortEntry 3 }



        basicPortLinkStatus OBJECT-TYPE

            SYNTAX  INTEGER {

                             goodlink(1),

                             badlink(2)

                            }

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Link status of a port."

            ::= { basicPortEntry 4 }



        basicPortName OBJECT-TYPE

            SYNTAX  DisplayString (SIZE (0..12))

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Mnemonic name of a port."

            ::= { basicPortEntry 5 }





        --

        -- Performance Monitor Segment Table

        --

        monitorSegmentTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF MonitorSegmentEntry

            ACCESS  not-accessible

            STATUS  mandatory

            ::= { monitorInfo 1 }



        monitorSegmentEntry OBJECT-TYPE





  B-26  8225 Hub Installation and Planning Guide





            SYNTAX  MonitorSegmentEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { monitorSegmentIndex }

            ::= { monitorSegmentTable 1 }



        MonitorSegmentEntry ::= SEQUENCE

            {

                monitorSegmentIndex

                    INTEGER,

                monitorSegmentTotalFrames

                    Counter,

                monitorSegmentTotalBytes

                    Counter,

                monitorSegmentCollisions

                    Counter,

                monitorSegmentCRCErrors

                    Counter,

                monitorSegmentAlignmentErrors

                    Counter,

                monitorSegmentSymbolErrors

                    Counter,

                monitorSegmentTotalErrors

                    Counter

            }



        monitorSegmentIndex OBJECT-TYPE

            SYNTAX  INTEGER ( 1..3 )

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "ID used to select a segment."

            ::= { monitorSegmentEntry 1 }



        monitorSegmentTotalFrames OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total frames received by a segment."

            ::= { monitorSegmentEntry 2 }



        monitorSegmentTotalBytes OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total bytes received by a segment."

            ::= { monitorSegmentEntry 3 }



        monitorSegmentCollisions OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total collisions on a segment."

            ::= { monitorSegmentEntry 4 }





                    Appendix B.  The IBM 8225 Management Information Base  B-27





        monitorSegmentCRCErrors OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total CRC errors received by a segment."

            ::= { monitorSegmentEntry 5 }



        monitorSegmentAlignmentErrors OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total frame-alignment errors received by a

                          segment."

            ::= { monitorSegmentEntry 6 }



        monitorSegmentSymbolErrors OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Symbol errors received by a segment."

            ::= { monitorSegmentEntry 7 }



        monitorSegmentTotalErrors OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total errors received by a segment."

            ::= { monitorSegmentEntry 8 }





        --

        -- Performance Monitor Group Table

        --

        monitorHubTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF MonitorHubEntry

            ACCESS  not-accessible

            STATUS  mandatory

            ::= { monitorInfo 2 }



        monitorHubEntry OBJECT-TYPE

            SYNTAX  MonitorHubEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { monitorHubIndex }

            ::= { monitorHubTable 1 }



        MonitorHubEntry ::= SEQUENCE

            {

                monitorHubIndex

                    INTEGER,

                monitorHubCollisions

                    Counter,

                monitorHubCRCErrors

                    Counter,





  B-28  8225 Hub Installation and Planning Guide





                monitorHubAlignmentErrors

                    Counter,

                monitorHubSymbolErrors

                    Counter

            }



        monitorHubIndex OBJECT-TYPE

            SYNTAX  INTEGER ( 1..6 )

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "ID used to select a hub unit."

            ::= { monitorHubEntry 1 }



        monitorHubCollisions OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total collisions experienced by a hub unit."

            ::= { monitorHubEntry 2 }



        monitorHubCRCErrors OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total CRC errors received by a hub."

            ::= { monitorHubEntry 3 }



        monitorHubAlignmentErrors OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total frame-alignment errors received by a hub."

            ::= { monitorHubEntry 4 }



        monitorHubSymbolErrors OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total symbol errors received by a hub."

            ::= { monitorHubEntry 5 }





        --

        -- FEM port statistics

        --

        monitorFemTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF MonitorFemEntry

            ACCESS  not-accessible

            STATUS  mandatory

            ::= { monitorInfo 3 }



        monitorFemEntry OBJECT-TYPE

            SYNTAX  MonitorFemEntry





                    Appendix B.  The IBM 8225 Management Information Base  B-29





            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { monitorFemHubIndex}

            ::= { monitorFemTable 1 }



        MonitorFemPortEntry ::= SEQUENCE

            {

                monitorFemHubIndex

                    INTEGER,

                monitorFemInFrames

                    Counter,

                monitorFemInDiscards

                    Counter,

                monitorFemInOctets

                    Counter,

                monitorFemOutFrames

                    Counter,

                monitorFemOutDiscards

                    Counter,

                monitorFemOutOctets

                    Counter,

                monitorFemFCSErrors

                    Counter,

                monitorFemFrameTooLongs

                    Counter,

                monitorFemRunts

                    Counter,

                monitorFemCollisions

                    Counter

            }





        monitorFemHubIndex OBJECT-TYPE

            SYNTAX  INTEGER ( 1..6 )

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "ID used to select a hub unit."

            ::= { monitorFemEntry 1 }



        monitorFemInFrames OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "Number of frames received by the FEM port."

            ::= { monitorFemEntry 2 }



        monitorFemInDiscards OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "Number of frames received and filtered by the FEM port."

            ::= { monitorFemEntry 3 }



        monitorFemInOctets OBJECT-TYPE





  B-30  8225 Hub Installation and Planning Guide





            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "Number of octets received by the FEM port."

            ::= { monitorFemEntry 4 }



        monitorFemOutFrames OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "Number of frames transmitted by the FEM port."

            ::= { monitorFemEntry 5 }



        monitorFemOutDiscards OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "Number of frames transmitted to but filtered by

                         the FEM port."

            ::= { monitorFemEntry 6 }



        monitorFemOutOctets OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "Number of octets transmitted by the FEM port."

            ::= { monitorFemEntry 7 }



        monitorFemFCSErrors OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "Number of frames received by the FEM port."

            ::= { monitorFemEntry 8 }



        monitorFemFrameTooLongs OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "Number of frames longer than 1518 bytes received

                         by the FEM port."

            ::= { monitorFemEntry 9 }



        monitorFemRunts OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION "Number of frames shorter than 64 bytes received

                         by the FEM port."

            ::= { monitorFemEntry 10 }



        monitorFemCollisions OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only





                    Appendix B.  The IBM 8225 Management Information Base  B-31





            STATUS  mandatory

            DESCRIPTION "Number of collisions in the FEM port."

            ::= { monitorFemEntry 11 }





        --

        -- Performance Monitor Port Table

        --

            monitorPort             OBJECT IDENTIFIER ::= { monitorInfo 4 }



        monitorPortTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF MonitorPortEntry

            ACCESS  not-accessible

            STATUS  mandatory

            ::= { monitorPort 1 }



        monitorPortEntry OBJECT-TYPE

            SYNTAX  MonitorPortEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { monitorPortGroupIndex,

                      monitorPortIndex }

            ::= { monitorPortTable 1 }



        MonitorPortEntry ::= SEQUENCE

            {

                monitorPortHubIndex

                    INTEGER,

                monitorPortIndex

                    INTEGER,

                monitorPortSymbolErrors

                    Counter

            }



        monitorPortHubIndex OBJECT-TYPE

            SYNTAX  INTEGER ( 1..6 )

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "ID used to select a hub unit."

            ::= { monitorPortEntry 1 }



        monitorPortIndex OBJECT-TYPE

            SYNTAX  INTEGER ( 1..12 )

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Port number of the selected hub."

            ::= { monitorPortEntry 2 }



        monitorPortSymbolErrors OBJECT-TYPE

            SYNTAX  Counter

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Total symbol errors received by the port."

            ::= { monitorPortEntry 3}





  B-32  8225 Hub Installation and Planning Guide





    --

    -- backup port group

    --

        backupPortTableSize OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Table size of backup ports."

            ::= { backupPortInfo 1 }



        backupPortTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF BackupPortEntry

            ACCESS  not-accessible

            STATUS  mandatory

            ::=  { backupPortInfo 2 }



        backupPortEntry OBJECT-TYPE

            SYNTAX  BackupPortEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { backupIndex }

            ::=  { backupPortTable 1 }



        BackupPortEntry ::= SEQUENCE

            {

                backupIndex

                    INTEGER,

                backupPriPortGroup

                    INTEGER,

                backupPriPortPort

                    INTEGER,

                backupSecPortGroup

                    INTEGER,

                backupSecPortPort

                    INTEGER,

                backupPortAction

                    INTEGER

            }



        backupIndex OBJECT-TYPE

            SYNTAX  INTEGER (1..18)

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Backup table index."

            ::= { backupPortEntry 1 }



        backupPriPortGroup OBJECT-TYPE

            SYNTAX  INTEGER (1..6)

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Hub ID of the primary port."

            ::= { backupPortEntry 2 }





                    Appendix B.  The IBM 8225 Management Information Base  B-33





        backupPriPortPort OBJECT-TYPE

            SYNTAX  INTEGER (1..13)

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Port number of the primary port.  Number 13 is the

                          FEM port of this hub."

            ::= { backupPortEntry 3 }



        backupSecPortGroup OBJECT-TYPE

            SYNTAX  INTEGER (1..6)

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Hub ID of the secondary port"

            ::= { backupPortEntry 4 }



        backupSecPortPort OBJECT-TYPE

            SYNTAX  INTEGER (1..13)

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Port number of the secondary port.  Number 13 is the

                          FEM port of this hub."

            ::= { backupPortEntry 5 }



        backupPortAction OBJECT-TYPE

            SYNTAX  INTEGER {

                             inactive(1),

                             active(2),

                             stand-by(3),

                             backup(4)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION "Setting this object to inactive(1) disables the backup

                  port function for this backup port pair.  Setting this object

                  to active(2) will disable the secondary port and enable the

                  primary port.



                  When the backup port pair is activated, the backup status of

                  this port pair is reflected as stand-by(3) or backup(4).

                  Value stand-by(3) indicates that the primary link is okay

                  and enabled.  Value backup(4) means that the primary link has

                  failed and the secondary link has taken over.  After the

                  secondary link has taken over, setting this object to

                  active(2) will attempt to recover the primary port and

                  disable the secondary port.  Success here depends on the

                  ability to establish a good link on the primary port.



                  The values stand-by(3) and backup(4) are read-only.

                  Attempting to set this object to either of these two values

                  is not valid.  The result 'snmpBadValue' will be returned."

            ::= { backupPortEntry 6 }





  B-34  8225 Hub Installation and Planning Guide





    --

    -- security port group

    --

        securityPortTable OBJECT-TYPE

            SYNTAX  SEQUENCE OF SecurityPortEntry

            ACCESS  not-accessible

            STATUS  mandatory

            ::=  { securityInfo 1 }



        securityPortEntry OBJECT-TYPE

            SYNTAX  SecurityPortEntry

            ACCESS  not-accessible

            STATUS  mandatory

            INDEX   { securityPortGroupIndex, securityPortIndex }

            ::=  { securityPortTable  1 }



        SecurityPortEntry ::= SEQUENCE

            {

                securityPortGroupIndex

                    INTEGER,

                securityPortIndex

                    INTEGER,

                securityAuthorizedAddr

                    PhysAddress,

                securityIntrusionAction

                    INTEGER

            }



        securityPortGroupIndex OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "ID of a hub unit."

            ::= { securityPortEntry 1 }



        securityPortIndex OBJECT-TYPE

            SYNTAX  INTEGER

            ACCESS  read-only

            STATUS  mandatory

            DESCRIPTION  "Port ID in a hub unit."

            ::= { securityPortEntry 2 }



        securityAuthorizedAddr OBJECT-TYPE

            SYNTAX  PhysAddress

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "Authorized source MAC address of the security

                          port."

            ::= { securityPortEntry 3 }



        securityIntrusionAction OBJECT-TYPE

            SYNTAX  INTEGER {

                             inactive(1),

                             warning(2),





                    Appendix B.  The IBM 8225 Management Information Base  B-35





                             warning-and-disable(3)

                            }

            ACCESS  read-write

            STATUS  mandatory

            DESCRIPTION  "The object sets the action mode when the source

                          address of the port is different from the

                          securityAuthorizedAddr.



                          When set to inactive(1), disables the intrusion

                          protection of this port.



                          When set to warning(2), enables the intrusion

                          protection of the port.   If the port is intruded,

                          the agent sends a trap message to the trap manager.



                          When set to warning-and-disable(3), also enables the

                          intrusion protection function.  If the port is intruded,

                          the agent sends a trap message to the trap manager and

                          then disables the intruded port."

            ::= { securityPortEntry 4 }



    --

    --

    --   IBM 8225 Traps

    --

    --

        intrusionHappen TRAP-TYPE

            ENTERPRISE  ibm8225

            VARIABLES   { securityPortGroupIndex, securityPortIndex }

            DESCRIPTION "The specified port is intruded."

            ::= 1



        masterLinkFailEvent TRAP-TYPE

            ENTERPRISE  ibm8225

            VARIABLES   { backupPriPortGroup, backupPriPortPort,

                          backupSecPortGroup, backupSecPortPort }

            DESCRIPTION "The master link fails, and the backup link

                         function is activated."

            ::= 2



        backupAgentRelay TRAP-TYPE

            ENTERPRISE  ibm8225

            VARIABLES   { basicHubIndex, basicSegmentIndex }

            DESCRIPTION "The master agent fails, and the backup agent now

                         monitors the system."

            ::= 3



        powerStatusChange TRAP-TYPE

            ENTERPRISE ibm8225

            VARIABLES  { basicPowerHubIndex, basicPowerIndex, basicPowerStatus }

            DESCRIPTION "This trap is sent when a change occurs in the

                         power supply of a hub.  This occurs when a power

                         supply is removed from a hub, added to a hub, or fails."

            ::= 4





  B-36  8225 Hub Installation and Planning Guide





        ipAutoDiscoveryTrap TRAP-TYPE

            ENTERPRISE  ibm8225

            DESCRIPTION "This trap is sent by SNMP managed device to

                         inform the network management station."

            ::= 5



      END

    





                    Appendix B.  The IBM 8225 Management Information Base  B-37





  B-38  8225 Hub Installation and Planning Guide





  APPENDIX C.  PRODUCT WARRANTY AND NOTICES

  _________________________________________





  International Business Machines Corporation           Armonk, New York, 10504



  STATEMENT OF LIMITED WARRANTY



  The warranties provided by IBM in this Statement of Limited Warranty apply

  __________________________________________________________________________

  only to Machines you originally purchase for your use, and not for resale,

  __________________________________________________________________________

  from IBM or your reseller.  The term "Machine" means an IBM machine, its

  ________________________________________________________________________

  features, conversions, upgrades, elements, or accessories, or any combination

  _____________________________________________________________________________

  of them.  Unless IBM specifies otherwise, the following warranties apply only

  _____________________________________________________________________________

  in the country where you acquire the Machine.  If you have any questions,

  _________________________________________________________________________

  contact IBM or your reseller.

  _____________________________



  +---------------------------------------------------------------------------+

  |                                                                           |

  |     MACHINE:  IBM 8225 Fast Ethernet Stackable Hub                        |

  |                                                                           |

  |     WARRANTY PERIOD*:  1 year                                             |

  |                                                                           |

  | *Contact your place of purchase for warranty service information.         |

    _________________________________________________________________

  |                                                                           |

  +---------------------------------------------------------------------------+



  PRODUCTION STATUS

  Each Machine is manufactured from new parts, or new and used parts.  In some

  cases, the Machine may not be new and may have been previously installed.

  Regardless of the Machine's production status, IBM's warranty terms apply.



  THE IBM WARRANTY FOR MACHINES

  IBM warrants that each Machine 1) is free from defects in materials and

  workmanship and 2) conforms to IBM's Official Published Specifications.  The

  warranty period for a Machine is a specified, fixed period commencing on its

  Date of Installation.  The date on your receipt is the Date of Installation,

  unless IBM or your reseller informs you otherwise.



  During the warranty period IBM or your reseller, if authorized by IBM, will

  provide warranty service under the type of service designated for the Machine

  and will manage and install engineering changes that apply to the Machine.



  For IBM or your reseller to provide warranty service for a feature,

  conversion, or upgrade, IBM or your reseller may require that the Machine on

  which it is installed be 1) for certain Machines, the designated,

  serial-numbered Machine and 2) at an engineering-change level compatible with

  the feature, conversion, or upgrade.  Many of these transactions involve the

  removal of parts and their return to IBM.  You represent that all removed

  parts are genuine and unaltered.  A part that replaces a removed part will

  assume the warranty service status of the replaced part.





  (C) Copyright IBM Corp. 1996                                              C-1





  If a Machine does not function as warranted during the warranty period, IBM

  or your reseller will repair it or replace it with one that is at least

  functionally equivalent, without charge.  The replacement may not be new, but

  will be in good working order.  If IBM or your reseller is unable to repair

  or replace the Machine, you may return it to your place of purchase and your

  money will be refunded.



  If you transfer a Machine to another user, warranty service is available to

  that user for the remainder of the warranty period.  You should give your

  proof of purchase and this Statement to that user.  However, for Machines

  which have a life-time warranty, this warranty is not transferable.



  WARRANTY SERVICE

  To obtain warranty service for the Machine, you should contact your reseller

  or call IBM.  In the United States, call IBM at 1-800-IBM-SERV (426-7378).

  In Canada, call IBM at 1-800-565-3344.  You may be required to present proof

  of purchase.



  IBM or your reseller will provide certain types of repair and exchange

  service, either at your location or at IBM's or your reseller's service

  center, to restore a Machine to good working order.



  When a type of service involves the exchange of a Machine or part, the item

  IBM or your reseller replaces becomes its property and the replacement

  becomes yours.  You represent that all removed items are genuine and

  unaltered.  The replacement may not be new, but will be in good working order

  and at least functionally equivalent to the item replaced.  The replacement

  assumes the warranty service status of the replaced item.  Before IBM or your

  reseller exchanges a Machine or part, you agree to remove all features,

  parts, options, alterations, and attachments not under warranty service.  You

  also agree to ensure that the Machine is free of any legal obligations or

  restrictions that prevent its exchange.



  You agree to:



  1.  obtain authorization from the owner to have IBM or your reseller service

      a Machine that you do not own; and

  2.  where applicable, before service is provided --

      a.  follow the problem determination, problem analysis, and service

          request procedures that IBM or your reseller provide,

      b.  secure all programs, data, and funds contained in a Machine, and

      c.  inform IBM or your reseller of changes in a Machine's location.



  IBM is responsible for loss of, or damage to, your Machine while it is 1) in

  IBM's possession or 2) in transit in those cases where IBM is responsible for

  the transportation charges.



  EXTENT OF WARRANTY

  IBM does not warrant uninterrupted or error-free operation of a Machine.



  The warranties may be voided by misuse, accident, modification, unsuitable

  physical or operating environment, improper maintenance by you, removal or

  alteration of Machine or parts identification labels, or failure caused by a

  product for which IBM is not responsible.





  C-2  8225 Hub Installation and Planning Guide





  THESE WARRANTIES REPLACE ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS OR

  IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OR CONDITIONS

  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THESE WARRANTIES

  GIVE YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY

  FROM JURISDICTION TO JURISDICTION.  SOME JURISDICTIONS DO NOT ALLOW THE

  EXCLUSION OR LIMITATION OF EXPRESS OR IMPLIED WARRANTIES, SO THE ABOVE

  EXCLUSION OR LIMITATION MAY NOT APPLY TO YOU.  IN THAT EVENT SUCH WARRANTIES

  ARE LIMITED IN DURATION TO THE WARRANTY PERIOD.  NO WARRANTIES APPLY AFTER

  THAT PERIOD.



  LIMITATION OF LIABILITY

  Circumstances may arise where, because of a default on IBM's part or other

  liability you are entitled to recover damages from IBM.  In each such

  instance, regardless of the basis on which you are entitled to claim damages

  from IBM (including fundamental breach, negligence, misrepresentation, or

  other contract or tort claim), IBM is liable only for:



  1.  damages for bodily injury (including death) and damage to real property

      and tangible personal property; and

  2.  the amount of any other actual direct damages or loss, up to the greater

      of U.S. $100,000 or the charges (if recurring, 12 months' charges apply)

      for the Machine that is the subject of the claim.



  UNDER NO CIRCUMSTANCES IS IBM LIABLE FOR ANY OF THE FOLLOWING:  1)

  THIRD-PARTY CLAIMS AGAINST YOU FOR LOSSES OR DAMAGES (OTHER THAN THOSE UNDER

  THE FIRST ITEM LISTED ABOVE); 2) LOSS OF, OR DAMAGE TO, YOUR RECORDS OR DATA;

  OR 3) SPECIAL, INCIDENTAL, OR INDIRECT DAMAGES OR FOR ANY ECONOMIC

  CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS OR SAVINGS), EVEN IF IBM OR

  YOUR RESELLER IS INFORMED OF THEIR POSSIBILITY.  SOME JURISDICTIONS DO NOT

  ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO

  THE ABOVE EXCLUSION OR LIMITATION MAY NOT APPLY TO YOU.





  NOTICES

  _______



  References in this publication to IBM products, programs, or services do not

  imply that IBM intends to make these available in all countries in which IBM

  operates.  Any reference to an IBM product, program, or service is not

  intended to state or imply that only IBM's product, program, or service may

  be used.  Any functionally equivalent product, program, or service that does

  not infringe any of IBM's intellectual property rights may be used instead of

  the IBM product, program, or service.  Evaluation and verification of

  operation in conjunction with other products, except those expressly

  designated by IBM, are the user's responsibility.



  IBM may have patents or pending patent applications covering subject matter

  in this document.  The furnishing of this document does not give you any

  license to these patents.  You can send license inquiries, in writing, to the

  IBM Director of Licensing, IBM Corporation, 500 Columbus Avenue, THORNWOOD NY

  10594 USA.





                                 Appendix C.  Product Warranty and Notices  C-3





  ELECTRONIC EMISSION NOTICES

  ___________________________



  FEDERAL COMMUNICATIONS COMMISSION (FCC) STATEMENT



  NOTE:  This equipment has been tested and found to comply with the limits for

  a Class A digital device, pursuant to Part 15 of the FCC Rules.  These limits

  are designed to provide reasonable protection against harmful interference

  when the equipment is operated in a commercial environment.  This equipment

  generates, uses, and can radiate radio frequency energy and, if not installed

  and used in accordance with the instruction manual, may cause harmful

  interference to radio communications.  Operation of this equipment in a

  residential area is likely to cause harmful interference, in which case the

  user will be required to correct the interference at his own expense.



  IBM is not responsible for any radio or television interference caused by

  unauthorized changes or modifications to this equipment.  Unauthorized

  changes or modifications could void the user's authority to operate the

  equipment.



  This device complies with Part 15 of the FCC Rules.  Operation is subject to

  the following two conditions:  (1) this device may not cause harmful

  interference, and (2) this device must accept any interference received,

  including interference that may cause undesired operation.





  INDUSTRY CANADA CLASS A EMISSION COMPLIANCE STATEMENT



  This Class A digital apparatus meets the requirements of the Canadian

  Interference-Causing Equipment Regulations.



  AVIS DE CONFORMITE AUX NORMES D'INDUSTRIE CANADA



  Cet appareil numerique de la classe A respecte toutes les exigences du

  Reglement sur le materiel brouilleur du Canada.





  EUROPEAN COMMUNITY (CE) MARK OF CONFORMITY STATEMENT



  This product is in conformity with the protection requirements of EU Council

  Directive 89/336/EEC on the approximation of the laws of the Member States

  relating to electromagnetic compatibility.  IBM cannot accept responsibility

  for any failure to satisfy the protection requirements resulting from a

  non-recommended modification of the product, including the fitting of non-IBM

  option cards.



  This product has been tested and found to comply with the limits for Class A

  Information Technology Equipment according to CISPR 22/European Standard EN

  55022.  The limits for Class A equipment were derived for commercial and

  industrial environments to provide reasonable protection against interference

  with licensed communication equipment.  WARNING:  THIS IS A CLASS A PRODUCT.

  IN A DOMESTIC ENVIRONMENT THIS PRODUCT MAY CAUSE RADIO INTERFERENCE IN WHICH

  CASE THE USER MAY BE REQUIRED TO TAKE ADEQUATE MEASURES.





  C-4  8225 Hub Installation and Planning Guide





  Dieses Geraet ist berechtigt in Uebereinstimmung mit dem deutschen EMVG vom

  9.Nov.92 das EG-Konformitaetszeichen zu fuehren.  Der AuBteller der

  Konformitaetserklaerung ist die



      IBM Corporation

      P.O. Box 12195

      Research Triangle Park, NC 27709

      USA



  Dieses Geraet erfuellt die Bedingungen der EN 55022 Klasse A.  Fuer diese

  Klasse von Geraeten gilt folgende Bestimmung nach dem EMVG:  Geraete duerfen

  an Orten, fuer die sie nicht ausreichend entstoert sind, nur mit besonderer

  Genehmigung des Bundesminesters fuer Post und Telekommunikation oder des

  Bundesamtes fuer Post und Telekommunikation betrieben werden.  Die

  Genehmigung wird erteilt, wenn keine elektromagnetischen Stoerungen zu

  erwarten sind.  Auszug aus dem EMVG vom 9.Nov.92, Para.3, Abs.4)



  Hinwies:

  ________



  Dieses Genehmigungsverfahren ist von der Deutschen Bundespost noch nicht

  veroeffentlicht worden.





  JAPANESE VOLUNTARY CONTROL COUNCIL FOR INTERFERENCE (VCCI) STATEMENT



  This equipment is in the 1st Class category (information equipment to be used

  in commercial and/or industrial areas) and conforms to the standards set by

  the Voluntary Control Council for Interference by Information Technology

  Equipment aimed at preventing radio interference in commercial and industrial

  areas.



  Consequently, when used in a residential area or in an adjacent area thereto,

  radio interference may be caused to radios and TV receivers, and so on.



  Read the instructions for correct handling.



                          Japanese VCCI Class 1 PC-size





  KOREAN COMMUNICATIONS STATEMENT



  Please note that this device has been approved for business purpose with

  regard to electromagnetic interference.  If you find this is not suitable for

  your use, you may exchange it for a non-business purpose one.





  TRADEMARKS

  __________



  The following terms are trademarks of the IBM Corporation in the United

  States or other countries or both:





                                 Appendix C.  Product Warranty and Notices  C-5





  AIX                        NetView                   StackWatch

  EtherWatch                 Nways

  IBM                        OS/2



  Windows is a registered trademark of Microsoft Corporation.



  Other company, product, and service names, which may be denoted by a double

  asterisk (**), may be trademarks or service marks of others.





  C-6  8225 Hub Installation and Planning Guide





  GLOSSARY OF TERMS AND ABBREVIATIONS

  ___________________________________





  This glossary defines terms and               CONTRAST WITH.  This refers to a

  abbreviations used in this manual.            term that has an opposed or

  It includes terms and definitions             substantively different meaning.

  from the IBM Dictionary of Computing

           ___________________________

  (New York; McGraw-Hill, Inc., 1994).          SEE.  This refers the reader to

                                                multiple-word terms in which

  o   The symbol (A) identifies                 this term appears.

      definitions from the American

                           ________

      National Standard Dictionary for          SEE ALSO.  This refers the

      ________________________________

      Information Systems, ANSI                 reader to terms that have a

      ___________________

      X3.172-1990, copyright 1990 by            related, but not synonymous,

      the American National Standards           meaning.

      Institute (ANSI).  Copies can be

      purchased from the American               SYNONYM FOR.  This indicates

      National Standards Institute,             that the term has the same

      1430 Broadway, New York, New              meaning as a preferred term,

      York 10018.                               which is defined in the

                                                glossary.

  o   The symbol (E) identifies

      definitions from the ANSI/EIA

                           ________

      Standard - 440A: Fiber Optic             +--------------------+

      ____________________________

      Terminology, copyright 1989 by           | SPECIAL CHARACTERS |

      ___________

      the Electronics Industries               +--------------------+

      Association (EIA).  Copies can

      be purchased from the Electronic      &MU.M.  Micrometer.  One millionth

      Industries Association, 2001          part of one meter; synonymous with

      Pennsylvania Avenue N.W.,             micron.

      Washington, DC 20006.

                                            &MU.S.  Microsecond.  One millionth

  o   The symbol (I) identifies             part of one second.

      definitions from the Information

                           ___________

      Technology Vocabulary, developed

      _____________________

      by Subcommittee 1, Joint                 +----------+

      Technical Committee 1, of the            | NUMERICS |

      International Organization for           +----------+

      Standardization and the

      International Electrotechnical        10BASE-T.  An IEEE 802.3 standard

      Commission (ISO/IEC JTC1/SC1).        for baseband Ethernet data

                                            transmission at 10 Mbps over twisted

  o   The symbol (T) identifies             pair cabling.

      definitions from draft

      international standards,              100BASE-FX.  An IEEE 802.3 standard

      committee drafts, and working         for baseband Ethernet data

      papers being developed by             transmission at 100 Mbps over two

      ISO/IEC JTC1/SC1.                     multimode optical fibers.



  The following cross-references are

  used in this glossary:





  (C) Copyright IBM Corp. 1996                                              X-1





  100BASE-T4.  An IEEE 802.3 standard       (5) In word processing, the

  for baseband Ethernet data                location, identified by the address

  transmission at 100 Mbps over four        code, of a specific section of the

  pairs of category 3, 4 or 5               recording medium or storage. (T)

  unshielded balanced cable.

                                            ADDRESS RESOLUTION.  (1) A method

  100BASE-TX.  An IEEE 802.3 standard       for mapping network-layer addresses

  for baseband Ethernet data                to media-specific addresses.

  transmission at 100 Mbps over two         (2) See also Address Resolution

                                                         __________________

  pairs of category 5 unshielded            Protocol (ARP).

                                            ______________

  balanced cable or 150-ohm shielded

  balanced cable.                           ADDRESS RESOLUTION PROTOCOL (ARP).

                                            A protocol that dynamically maps

                                            between Internet addresses, baseband

     +---+                                  adapter addresses, X.25 addresses,

     | A |                                  and token-ring adapter addresses on

     +---+                                  a local area network.



  A.  Ampere.                               AGENT.  See Simple Network

                                                        ______________

                                            Management Protocol (SNMP) agent.

                                            ________________________________

  AC.  Alternating current.

                                            ANSI.  American National Standards

  ACTIVE.  (1) Able to communicate on       Institute

  the network.  A network adapter is

  active if it is able to transmit and      APPLICATION.   A collection of

  receive on the network.                   software components used to perform

  (2) Operational.  (3) Pertaining to       specific types of user-oriented work

  a node or device that is connected        on a computer.

  or is available for connection to

  another node or device.                   ASCII.  American National Standard

  (4) Currently transmitting or             Code for Information Interchange.

  receiving.                                The standard code, using a coded

                                            character set consisting of 7-bit

  ADAPTER.  In a LAN, within a              coded characters (8 bits including

  communicating device, a circuit card      parity check), that is used for

  that, with its associated software        information interchange among data

  and/or microcode, enables the device      processing systems, data

  to communicate over the network.          communication systems, and

                                            associated equipment.  The ASCII set

  ADDRESS.  (1) In data communication,      consists of control characters and

  the IEEE-assigned unique code or the      graphic characters. (A)

  unique locally administered code

  assigned to each device or                NOTE:  IBM has defined an extension

  workstation connected to a network.       to ASCII code (characters 128-255).

  (2) A character, group of

  characters, or a value that               ATTACH.  To make a device a part of

  identifies a register, a particular       a network logically.

  part of storage, a data source, or a

  data sink.  The value is represented      ATTACHING DEVICE.  Any device that

  by one or more characters. (T)            is physically connected to a network

  (3) To refer to a device or an item       and can communicate over the

  of data by its address. (A) (4) The       network.

  location in the storage of a

  computer where data is stored.            AUI.  Attachment unit interface.





  X-2  8225 Hub Installation and Planning Guide





  AUTHENTICATION.  (1) In computer          recognizable voice telephone

  security, verification of the             requires a bandwidth of about

  identity of a user or the user's          3000 hertz (3 kHz).  (2) The

  eligibility to access an object.          bandwidth of an optical link

  (2) In computer security,                 designates the information-carrying

  verification that a message has not       capacity of the link and is related

  been altered or corrupted.  (3) In        to the maximum bit rate that a fiber

  computer security, a process used to      link can support.

  verify the user of an information

  system or protected resources.            BAUD.  (1) A unit of signaling speed

  (4) A process that checks the             equal to the number of discrete

  integrity of an entity.                   conditions or signal events per

                                            second;  for example, one baud

  AUTHENTICATION ENTITY.  In the            equals one-half dot cycle per second

  Simple Network Management Protocol        in Morse code, one bit per second in

  (SNMP), the network management agent      a train of binary signals, and one

  responsible for verifying that an         3-bit value per second in a train of

  entity is a member of the community       signals each of which can assume one

  it claims to be in.  This entity is       of eight different states. (A)

  also responsible for encoding and         (2) In asynchronous transmission,

  decoding SNMP messages according to       the unit of modulation rate

  the authentication algorithm of a         corresponding to one unit interval

  given community.                          per second;  that is, if the

                                            duration of the unit interval is 20

  AUTHENTICATION FAILURE.  In the           milliseconds, the modulation rate is

  Simple Network Management Protocol        50 baud. (A)

  (SNMP), a trap that may be generated

  by an authentication entity when a        BBS.  Bulletin Board System.

  requesting client is not a member of

  the SNMP community.                       BINARY.  (1) Pertaining to a system

                                            of numbers to the base two; the

  AUTO-PARTITION.  In Ethernet              binary digits are 0 and 1. (A)

  repeaters, to shut off traffic in         (2) Pertaining to a selection,

  and out of a port when the port           choice, or condition that has two

  detects excessive an excessive            possible different values or states.

  frequency or duration of collisions.      (I) (A)

  Auto-partitioned ports continue to

  transmit and receive, and when they       BIT.  Either of the binary digits: 0

  are successful in either in a             or 1.

  specified amount of time, they

  reconnect to the network                  BIT-TIME.  (1) The time required to

  automatically.                            transmit 1 bit on the network.  For

                                            example, the IBM PC Network bit-time

                                            equals 500 nanoseconds (ns) and the

     +---+                                  Fast Ethernet bit-time equals 10 ns.

     | B |                                  (2) The reciprocal of the line data

     +---+                                  rate (or network data transfer

                                            rate).

  BANDWIDTH.  (1) The difference,

  expressed in hertz, between the           BNC.  A connector used with some

  highest and the lowest frequencies        coaxial cables.

  of a range of frequencies.  For

  example, analog transmission by           BOOTP.  Bootstrap Protocol.





                                       Glossary of Terms and Abbreviations  X-3





  BOOTSTRAP PROTOCOL (BOOTP).  A            BTU.  British thermal unit.

  protocol in the TCP/IP suite that

  permits a station to transmit a           BUS.  (1) In a processor, a physical

  request for an IP address to a            facility on which data is

  server and permits the server to          transferred to all destinations, but

  assign a station an IP address based      from which only addressed

  on the station's media access             destinations may read in accordance

  control (MAC) address.  Together          with appropriate conventions. (I)

  with the Trivial File Transfer            (2) A network configuration in which

  Protocol (TFTP), BOOTP can also be        nodes are interconnected through a

  used to send files.                       bidirectional transmission medium.

                                            (3) One or more conductors used for

  BPS.  Bits per second.                    transmitting signals or power. (A)



  BRIDGE.  (1) An attaching device          BUS NETWORK.  A network

  that connects two LAN segments to         configuration that provides a

  allow the transfer of information         bidirectional transmission facility

  from one LAN segment to the other.        to which all nodes are attached.  A

  A bridge may connect the LAN              sending node transmits in both

  segments directly by network              directions to the ends of the bus.

  adapters and software in a single         All nodes in the path examine and

  device, or may connect network            may copy the message as it passes.

  adapters in two separate devices

  through software and use of a             BYTE.  (1) A string that consists of

  telecommunications link between the       a number of bits, treated as a unit,

  two adapters.  (2) A functional unit      and representing a character. (T)

  that connects two LANs that use the       (2) A binary character operated upon

  same logical link control (LLC)           as a unit and usually shorter than a

  procedures but may use the same or        computer word. (A) (3) A string that

  different medium access control           consists of a particular number of

  (MAC) procedures. (T) Contrast with       bits, usually 8, that is treated as

  gateway and router.                       a unit, and that represents a

  _______     ______

                                            character.  (4) A group of 8

  BROADBAND.  (1) A frequency band          adjacent binary digits that

  between any two non-zone                  represent one extended binary-coded

  frequencies.  (2) A frequency band        decimal interchange code (EBCDIC)

  divisible into several narrower           character.  (5) See n-bit byte.

                                                                __________

  bands so that different kinds of

  transmissions such as voice, video,

  and data transmission can occur at           +---+

  the same time.  Synonymous with              | C |

  wideband.  Contrast with baseband,           +---+

  ________                 ________

  carrierband.

  ___________

                                            CASCADE.  To connect in a series or

  BROADBAND LOCAL AREA NETWORK (LAN).       in a succession of stages so that

  A local area network (LAN) in which       each stage derives from or acts upon

  information is encoded, multiplexed,      the product of the preceding stage.

  and transmitted through modulation

  of a carrier. (T)                         COAXIAL CABLE.  A cable consisting

                                            of one conductor, usually a small

  BROADCAST.  Simultaneous                  copper tube or wire, within and

  transmission of data to more than         insulated from another conductor of

  one destination.                          larger diameter, usually copper

                                            tubing or copper braid.





  X-4  8225 Hub Installation and Planning Guide





  COLLISION.  (1) An unwanted               CSMA/CD.  Carrier sense multiple

  condition that results from               access with collision detection.

  concurrent transmissions on a             The access protocol used in Ethernet

  channel. (T) (2) When a frame from a      networks.

  transmitting adapter encounters any

  other signal in its path (frame,

  noise, or another type of signal),           +---+

  the adapter stops transmitting and a         | D |

  collision is registered.                     +---+



  COLLISION DOMAIN.  In IEEE 802.3          DATA.  (1) A representation of

  networks, one segment or multiple         facts, concepts, or instructions in

  segments that are interconnected          a formalized manner suitable for

  physically by repeaters.                  communication, interpretation, or

                                            processing by human or automatic

  COMMAND.  (1) A request for               means. (I) (A) (2) Any

  performance of an operation or            representations such as characters

  execution of a program.  (2) A            or analog quantities to which

  character string from a source            meaning is or might be assigned. (A)

  external to a system that represents

  a request for system action.              DATA LINK.  (1) Any physical link,

                                            such as a wire or a telephone

  COMMUNICATION NETWORK MANAGEMENT          circuit, that connects one or more

  (CNM).  The process of designing,         remote terminals to a communication

  installing, operating, and managing       control unit, or connects one

  distribution of information and           communication control unit with

  control among users of communication      another.  (2) The assembly of parts

  systems.                                  of two data terminal equipment (DTE)

                                            devices that are controlled by a

  COMPONENT.  (1) Any part of a             link protocol, and the

  network other than an attaching           interconnecting data circuit, that

  device, such as an IBM 8228               enable data to be transferred from a

  Multistation Access Unit.                 data source to a data sink. (I)

  (2) Hardware or software that is          NOTE:  A telecommunication line is

  part of a functional unit.                only the physical medium of

                                            transmission.  A data link includes

  CONFIGURATION.  (1) The arrangement       the physical medium of transmission,

  of a computer system or network as        the protocol, and associated devices

  defined by the nature, number, and        and programs; it is both physical

  chief characteristics of its              and logical.

  functional units.  More

  specifically, the term may refer to       DATA SET READY (DSR).  Synonym for

  a hardware configuration or a             DCE ready.

                                            _________

  software configuration. (I) (A)

  (2) The devices and programs that         DATA TRANSFER.  (1) The result of

  make up a system, subsystem, or           the transmission of data signals

  network.  (3) See also system             from any data source to a data

                         ______

  configuration.                            receiver.  (2) The movement, or

  _____________

                                            copying, of data from one location

  CONNECT.  In a LAN, to physically         and the storage of the data at

  join a cable from a station to an         another location.

  access unit or network connection

  point.  Contrast with attach.             DCE READY.  In the EIA 232 standard,

                        ______

                                            a signal that indicates to the data





                                       Glossary of Terms and Abbreviations  X-5





  terminal equipment (DTE) that the         circuit-terminating equipment (DCE),

  local data circuit-terminating            using serial binary data

  equipment (DCE) is connected to the       interchange.

  communication channel and is ready

  to send data.  Synonymous with data       END DELIMITER.  The last byte of a

                                 ____

  set ready (DSR).                          token or frame, consisting of a

  _______________

                                            special, recognizable bit pattern.

  DEFAULT.  Pertaining to an

  attribute, value, or option that is       EQUIPMENT RACK.  A metal stand for

  assumed when none is explicitly           mounting network components, such as

  specified.                                distribution panels and IBM 8225

                                            Fast Ethernet Stackable Hubs.

  DELIMITER.  (1) A character used to       Synonymous with rack.

                                                            ____

  indicate the beginning or end of a

  character string. (T) (2) A bit           ETHERNET.  A 10- or 100-megabit

  pattern that defines the beginning        baseband local area network that

  or end of a frame or token on a LAN.      allows multiple stations to access

                                            the transmission medium at will

  DESTINATION.  Any point or location,      without prior coordination, avoids

  such as a node, station, or               contention by using carrier sense

  particular terminal, to which             and deference, and resolves

  information is to be sent.                contention by using collision

                                            detection and transmission.

  DEVICE.  (1) A mechanical,                Ethernet uses carrier sense multiple

  electrical, or electronic                 access with collision detection

  contrivance with a specific purpose.      (CSMA/CD).

  (2) An input/output unit such as a

  terminal, display, or printer.  See       ETHERNET VERSION 2.  Also called DIX

  also attaching device.                    Ethernet, for DEC, Intel, and Xerox.

       _________________

                                            Differs from IEEE 802.3 Ethernet in

  DIAGNOSTICS.  Modules or tests used       frame format only.  Not an approved

  by computer users and service             international standard but in more

  personnel to diagnose hardware            widespread use than IEEE 802.3

  problems.                                 Ethernet.



  DIGITAL.  (1) Pertaining to data in

  the form of digits. (A) Contrast             +---+

  with analog.  (2) Pertaining to data         | F |

       ______

  consisting of numerical values or            +---+

  discrete units.

                                            FEATURE.  A part of an IBM product

                                            that may be ordered separately by

     +---+                                  the customer.

     | E |

     +---+                                  FIELD.  On a data medium or a

                                            storage medium, a specified area

  EIA.  Electronic Industries               used for a particular category of

  Association.                              data; for example, a group of

                                            character positions used to enter or

  EIA 232.  In data communications, a       display wage rates on a panel.  (T)

  specification of the Electronic

  Industries Association (EIA) that         FIELD-REPLACEABLE UNIT (FRU).  An

  defines the interface between data        assembly that is replaced in its

  terminal equipment (DTE) and data





  X-6  8225 Hub Installation and Planning Guide





  entirety when any one of its              drive in the hierarchical sequence

  components fails.                         above the file.



  FILE.  A named set of records stored      FUNCTION.  (1) A specific purpose of

  or processed as a unit. (T)               an entity, or its characteristic

                                            action. (A) (2) In data

  FILE SERVER.  A high-capacity disk        communications, a machine action

  storage device or a computer that         such as carriage return or line

  each computer on a network can            feed.

  access to retrieve files that can be

  shared among the attached computers.      FUNCTIONAL UNIT.  An entity of

                                            hardware, software, or both, capable

  FILE TRANSFER PROTOCOL (FTP).  In         of accomplishing a specified

  TCP/IP, an application protocol used      purpose. (I) (A)

  for transferring files to and from

  host computers.  FTP requires a user

  ID and possibly a password to allow          +---+

  access to files on a remote host             | G |

  system.                                      +---+



  FLASH MEMORY.  A data storage device      GATEWAY.  A device and its

  that is programmable, erasable, and       associated software that

  does not require continuous power to      interconnect networks or systems of

  retain its storage.  The chief            different architectures.  The

  benefit of flash memory over other        connection is usually made above the

  programmable and erasable data            reference model network layer.  For

  storage devices is that it can be         example, a gateway allows LANs

  reprogrammed without being removed        access to System/370* host

  from the circuit board.                   computers.  Contrast with bridge and

                                                                      ______

                                            router.

                                            ______

  FRAME.  (1) The unit of transmission

  in some LANs, including the IBM           GROUP.  (1) A set of related records

  Token-Ring Network and the IBM PC         that have the same value for a

  Network.  It includes delimiters,         particular field in all records.

  control characters, information, and      (2) A collection of users who can

  checking characters.  (2) A housing       share access authorities for

  for machine elements.  (3) In             protected resources.  (3) A list of

  synchronous data link control             names that are known together by a

  (SDLC), the vehicle for every             single name.  the completion of an

  command, every response, and all          asynchronous operation, such as an

  information that is transmitted           I/O operation.

  using SDLC procedures.  Each frame

  begins and ends with a flag.

                                               +---+

  FT.  (1) Foot.  (2) Feet.                    | H |

                                               +---+

  FTP.  (1) File Transfer Protocol.

  (2) Foiled twisted pair.                  HARDWARE.  Physical equipment as

                                            opposed to programs, procedures,

  FRU.  Field replaceable unit.             rules, and associated documentation.

                                            (I) (A)

  FULLY QUALIFIED PATH NAME.  In an

  operating system, a file name that        HEADER.  The portion of a message

  includes all directories and the          that contains control information





                                       Glossary of Terms and Abbreviations  X-7





  for the message such as one or more       concurrently or not, and to the data

  destination fields, name of the           involved in such a process.

  originating station, input sequence

  number, character string indicating       INTERFACE.  (1) A shared boundary

  the type of message, and priority         between two functional units,

  level for the message.                    defined by functional

                                            characteristics, common physical

  HERTZ (HZ).  A unit of frequency          interconnection characteristics,

  equal to one cycle per second.            signal characteristics, and other

  NOTE:  In the United States, line         characteristics as appropriate. (I)

  frequency is 60Hz or a change in          (2) A shared boundary.  An interface

  voltage polarity 120 times per            may be a hardware component to link

  second; in Europe, line frequency is      two devices or a portion of storage

  50Hz or a change in voltage polarity      or registers accessed by two or more

  100 times per second.                     computer programs. (A) (3) Hardware,

                                            software, or both, that links

  HOP.  See repeater hop.                   systems, programs, or devices.

            ____________



  HMI.  Hub Management Interface.           INTERRUPT.  (1) A suspension of a

                                            process, such as execution of a

  HUB.  In a network, a point at which      computer program caused by an

  circuits are either connected or          external event, and performed in

  switched.  For example, in a star         such a way that the process can be

  network, the central node, or in a        resumed. (A)   (2) An instruction

  star/ring network, the location of        that directs the microprocessor to

  wiring concentrators.                     suspend what it is doing and run a

                                            specified routine.  When the routine

  HZ.  Hertz.                               is complete, the microprocessor

                                            resumes its original work.



     +---+                                  IP.  Internet Protocol.

     | I |

     +---+                                  IPX.  Internetwork Packet Exchange.



  IEC.  International Electrotechnical      IPX SOCKET.  Within a device

  Commision.                                attached to an IPX network, the

                                            address of a process, such as file

  IEEE.  Institute of Electrical and        service or diagnostics.

  Electronics Engineers

                                            ISO.  International Organization for

  IN.  Inch.                                Standardization



  IN-BAND.  A communication data

  stream transmitted within the                +---+

  primary signalling channel or                | J |

  frequency band.                              +---+



  INPUT/OUTPUT (I/O).  (1) Pertaining       JABBERING.  A condition in which a

  to a device whose parts can perform       device is transmitting a frame that

  an input process and an output            is longer than the maximum allowed

  process at the same time. (I)             length.

  (2) Pertaining to a functional unit

  or channel involved in an input           JACK.  A connecting device to which

  process, output process, or both,         a wire or wires of a circuit may be





  X-8  8225 Hub Installation and Planning Guide





  attached and which is arranged for        end-to-end link control procedures.

  insertion of a plug.                      (2) The combination of physical

                                            media, protocols, and programming

                                            that connects devices on a network.

     +---+                                  (3) In computer programming, the

     | K |                                  part of a program, in some cases a

     +---+                                  single instruction or an address,

                                            that passes control and parameters

  KG.  Kilogram.                            between separate portions of the

                                            computer program. (I) (A) (4) To

  KM.  Kilometer.                           interconnect items of data or

                                            portions of one or more computer

  KVA.  Kilovolt ampere. A unit of          programs.  (5) In SNA, the

  power.                                    combination of the link connection

                                            and link stations joining network

                                            nodes.

     +---+

     | L |                                  LINK CONNECTION.  (1) All physical

     +---+                                  components and protocol machines

                                            that lie between the communicating

  LAN.  Local area network.                 link stations of a link.  The link

                                            connection may include a switched or

  LAN SEGMENT.  (1) Any portion of a        leased physical data circuit, a LAN,

  LAN (for example, a single bus or         or an X.25 virtual circuit.  In SNA,

  ring) that can operate independently      the physical equipment providing

  but is connected to other parts of        two-way communication and error

  the establishment network via             correction and detection between one

  bridges.  (2) An entire ring or bus       link station and one or more other

  network without bridges.                  link stations.



  LAYER.  (1) One of the seven levels       LINK TEST.  In 10BASE-T and optical

  of the Open Systems Interconnection       fiber based Ethernets, a signal sent

  reference model.  (2) In open             back and forth between a port in a

  systems architecture, a collection        repeater and a port in an attached

  of related functions that comprise        device to verify connection.

  one level of hierarchy of functions.

  Each layer specifies its own              LOCAL AREA NETWORK (LAN).  A

  functions and assumes that lower          computer network located on a user's

  level functions are provided.             premises within a limited

  (3) In SNA, a grouping of related         geographical area.

  functions that are logically

  separate from the functions of other      LOCALLY ADMINISTERED ADDRESS.  In a

  layers.  Implementation of the            local area network, an adapter

  functions in one layer can be             address that the user can assign to

  changed without affecting functions       override the universally

  in other layers.                          administered address.  Contrast with

                                            universally administered address.

  LB.  Pound.

                                            LOGICAL CONNECTION.  In a network,

  LED.  Light-emitting diode.               devices that can communicate or work

                                            with one another because they share

  LINK.  (1) The logical connection         the same protocol.  See also

  between nodes including the               physical connection.

                                            ___________________





                                       Glossary of Terms and Abbreviations  X-9





     +---+                                  instruction set, that is implemented

     | M |                                  in a part of storage that is not

     +---+                                  program-addressable.



  M.  Meter.                                MM.  Millimeter.



  MAC.  Medium access control.              MODEM (MODULATOR/DEMODULATOR).  A

                                            device that converts digital data

  MANAGEMENT INFORMATION BASE (MIB).        from a computer to an analog signal

  In the Simple Network Management          that can be transmitted in a

  Protocol (SNMP), a collection of          telecommunication line, and converts

  objects relating to a common              the analog signal received to data

  management area.  See also MIB            for the computer.

                             ___

  object.

  ______



  MAU.  Medium attachment unit.                +---+

                                               | N |

  MBPS.  One million bits per second.          +---+



  MEDIUM ACCESS CONTROL (MAC)               N-BIT BYTE.  A string that consists

  PROTOCOL.  In a local area network,       of n bits. (T)

  the part of the protocol that

  governs communication on the              NAME.  An alphanumeric term that

  transmission medium without concern       identifies a data set, statement,

  for the physical characteristics of       program, or cataloged procedure.

  the medium, but taking into account

  the topological aspects of the            NETVIEW.  A host-based IBM licensed

  network, in order to enable the           program that provides communication

  exchange of data between data             network management (CNM) or

  stations. (T)                             communications and systems

                                            management (C&SM) services.

  MESSAGE.  (1) A logical partition of

  the user device's data stream to and      NETWORK.  (1) A configuration of

  from the adapter.  (2) A group of         data processing devices and software

  characters and control bits               connected for information

  transferred as an entity.                 interchange.  (2) An arrangement of

                                            nodes and connecting branches.

  MIB.  Management Information Base.        Connections are made between data

                                            stations. (T)

  MIB BROWSER.  A software tool, often

  shipped with network management           NETWORK LAYER.  (1) In the Open

  applications, that allows working         Systems Interconnection reference

  with any SNMP MIB that is written in      model, the layer that provides for

  abstract syntax notation 1 (ASN.1).       the entities in the transport layer

                                            the means for routing and switching

  MIB OBJECT.  In the Simple Network        blocks of data through the network

  Management Protocol (SNMP), an            between the open systems in which

  object contained in the Management        those entities reside. (T) (2) The

  Information Base (MIB).                   layer that provides services to

                                            establish a path between systems

  MICROCODE.  (1) One or more               with a predictable quality of

  microinstructions.  (2) A code,           service.  See Open Systems

                                                          ____________

  representing the instructions of an       Interconnection (OSI).

                                            _____________________





  X-10  8225 Hub Installation and Planning Guide





  NETWORK MANAGEMENT.  The conceptual       standardized procedures to enable

  control element of a station that         the interconnection of data

  interfaces with all of the                processing systems.

  architectural layers of that station      NOTE:  OSI architecture establishes

  and is responsible for the resetting      a framework for coordinating the

  and setting of control parameters,        development of current and future

  obtaining reports of error                standards for the interconnection of

  conditions, and determining if the        computer systems.  Network functions

  station should be connected to or         are divided into seven layers.  Each

  disconnected from the network.            layer represents a group of related

                                            data processing and communication

  NETWORK MANAGER.  A program or group      functions that can be carried out in

  of programs that is used to monitor,      a standard way to support different

  manage, and diagnose the problems of      applications.

  a network.

                                            OPEN SYSTEMS INTERCONNECTION (OSI)

  NODE.  (1) Any device, attached to a      ARCHITECTURE.  Network architecture

  network, that transmits and/or            that adheres to a particular set of

  receives data.  (2) An endpoint of a      ISO standards that relates to Open

  link, or a junction common to two or      Systems Interconnection. (T)

  more links in a network.  (3) In a

  network, a point where one or more        OPEN SYSTEMS INTERCONNECTION (OSI)

  functional units interconnect             REFERENCE MODEL.  A model that

  transmission lines.                       represents the hierarchical

                                            arrangement of the seven layers

  NONVOLATILE RANDOM ACCESS MEMORY          described by the Open Systems

  (NVRAM).  Random access memory that       Interconnection architecture.

  retains its contents after

  electrical power is shut off.             OPERATION.  (1) A defined action,

                                            namely, the act of obtaining a

  NULL-MODEM CABLE.  An EIA 232 serial      result from one or more operands in

  cable wired so two terminals can          accordance with a rule that

  communicate without the use of            completely specifies the result for

  modems.                                   any permissible combination of

                                            operands. (A) (2) A program step

  NVRAM.  Nonvolatile random access         undertaken or executed by a

  memory.                                   computer.  (3) An action performed

                                            on one or more data items, such as

                                            adding, multiplying, comparing, or

     +---+                                  moving.

     | O |

     +---+                                  OPTION.  (1) A specification in a

                                            statement, a selection from a menu,

  OCTET.  A byte that consists of 8         or a setting of a switch, that may

  bits. (T)                                 be used to influence the execution

                                            of a program.  (2) A hardware or

  OHM.  A unit of measure of                software function that may be

  electrical resistance.                    selected or enabled as part of a

                                            configuration process.  (3) A piece

  OPEN SYSTEMS INTERCONNECTION (OSI).       of hardware (such as a network

  (1) The interconnection of open           adapter) that can be installed in a

  systems in accordance with specific       device to modify or enhance device

  ISO standards. (T) (2) The use of         function.





                                      Glossary of Terms and Abbreviations  X-11





  OUT-OF-BAND.  A communication data        PHYSICAL CONNECTION.  The ability of

  stream transmitted outside the            two connectors to mate and make

  primary signalling channel or             electrical contact.  In a network,

  frequency band.                           devices that are physically

                                            connected can communicate only if

  OUTPUT DEVICE.  A device in a data        they share the same protocol.  See

  processing system by which data can       also logical connection.

                                                 __________________

  be received from the system. (I) (A)

  Synonymous with output unit.              PLATFORM.  (1) The operating system

                  ___________

                                            environment in which a program runs.

  OUTPUT UNIT.  Synonym for output          (2) In computer technology, the

                            ______

  device.                                   principles on which an operating

  ______

                                            system is based.



     +---+                                  PLUG.  (1) A connector designed to

     | P |                                  insert into a receptacle or socket.

     +---+                                  (2) To insert a connector into a

                                            receptacle or socket.

  PARALLEL PORT.  A port that

  transmits the bits of a byte in           PORT.  (1) An access point for data

  parallel along the lines of the bus,      entry or exit.  (2) A connector on a

  1 byte at a time, to an I/O device.       device to which cables for other

  On a personal computer, it is used        devices such as display stations and

  to connect a device that uses a           printers are attached.

  parallel interface, such as a dot

  matrix printer, to the computer.          POST.  Power-on self-test.

  Contrast with serial port.

                ___________

                                            POWER-ON SELF-TEST (POST).  A series

  PATH.  (1) In a network, any route        of diagnostic tests that are run

  between any two nodes. (T) (2) The        automatically each time the

  route traversed by the information        computer's power is turned on.

  exchanged between two attaching

  devices in a network.  (3) A command      PROCEDURE.  A set of instructions

  in IBM Personal Computer Disk             that gives a service representative

  Operating System (PC DOS) and IBM         a step-by-step procedure for tracing

  Operating System/2* (OS/2) that           a symptom to the cause of failure.

  specifies directories to be searched

  for commands or batch files that are      PROTOCOL.  (1) A set of semantic and

  not found by a search of the current      syntactic rules that determines the

  directory.                                behavior of functional units in

                                            achieving communication. (I) (2) A

  PERSONAL COMPUTER (PC).  A desk-top,      specification for the format and

  free-standing, or portable                relative timing of information

  microcomputer that usually consists       exchanged between communicating

  of a system unit, a display, a            parties.

  monitor, a keyboard, one or more

  diskette drives, internal fixed-disk

  storage, and an optional printer.            +---+

  PCs are designed primarily to give           | R |

  independent computing power to a             +---+

  single user and are inexpensively

  priced for purchase by individuals        RACK.  Synonym for equipment rack.

                                                               ______________

  or small businesses.

                                            RANDOM ACCESS MEMORY (RAM).  A





  X-12  8225 Hub Installation and Planning Guide





  computer's or adapter's volatile          SEGMENT.  See cable segment, LAN

                                                          _____________  ___

  storage area into which data may be       segment.

                                            _______

  entered and retrieved in a

  nonsequential manner.                     SERIAL.  (1) Pertaining to a process

                                            in which all events occur one after

  RECEIVE.  To obtain and store             the other;  for example, serial

  information transmitted from a            transmission of the bits of a

  device.                                   character according to V24 CCITT

                                            protocol. (T)   (2) Pertaining to

  REPEATER.  In a network, a device         the sequential or consecutive

  that amplifies or regenerates data        occurrence of two or more related

  signals in order to extend the            activities in a single device or

  distance between attaching devices.       channel. (A)   (3) Pertaining to the

                                            sequential processing of the

  REPEATER HOP.  Counted when a frame       individual parts of a whole, such as

  passes through a repeater or its          the bits of a character or the

  equivalent.                               characters of a word, using the same

                                            facilities for successive

  REVERSE ADDRESS RESOLUTION PROTOCOL       parts. (A)

  (RARP).  A protocol that maintains a

  database of mappings between              SERIAL LINE INTERNET PROTOCOL

  physical hardware addresses and IP        (SLIP).  A simple form of

  addresses.                                encapsulation for IP frames that

                                            enables them to travel over serial

  RFC.  Request for comments.               lines.



  ROUTER.  An attaching device that         SERIAL PORT.  On personal computers,

  connects two LAN segments, which use      a port used to attach devices such

  similar or different architectures,       as display devices, letter-quality

  at the reference model network            printers, modems, plotters, and

  layer.  Contrast with bridge and          pointing devices such as light pens

                        ______

  gateway.                                  and mice; it transmits data 1 bit at

  _______

                                            a time.  Contrast with parallel

                                                                   ________

  ROUTING INFORMATION PROTOCOL (RIP).       port.

                                            ____

  In the Internet suite of protocols,

  an interior gateway protocol used to      SERVER.  (1) A device, program, or

  exchange intradomain routing              code module on a network dedicated

  information and to determine optimum      to providing a specific service to a

  routes between internet hosts.  RIP       network.  (2) On a LAN, a data

  determines optimum routes on the          station that provides facilities to

  basis of route metrics, not link          other data stations.  Examples are a

  transmission speed.                       file server, print server, and mail

                                            server.



     +---+                                  SERVICE ADVERTISING PROTOCOL (SAP).

     | S |                                  In Internetwork Packet Exchange

     +---+                                  (IPX), a protocol that provides the

                                            following:

  SAP.  (1) Service access point.

  (2) Service Advertising Protocol.         o   A mechanism that allows IPX

                                                servers on an internet to

  SCTP.  Screened twisted pair.                 advertise their services by name

                                                and type.  Servers using this

                                                protocol have their name,





                                      Glossary of Terms and Abbreviations  X-13





      service type, and internet            SOCKET.  See IPX socket.

                                                         __________

      address recorded in all file

      servers running NetWare.              SOURCE ADDRESS.  A field in the

                                            medium access control (MAC) frame

  o   A mechanism that allows a             that identifies the location from

      workstation to broadcast a query      which information is sent.  Contrast

      to discover the identities of         with destination address.

                                                 ___________________

      all servers of all types, all

      servers of a specific type, or        START DELIMITER.  The first byte of

      the nearest server of a specific      a token or frame, consisting of a

      type.                                 special, recognizable bit pattern.



  o   A mechanism that allows a             STATION.  (1) A communication device

      workstation to query any file         attached to a network.  The term

      server running NetWare to             used most often in LANs is an

      discover the names and addresses      attaching device or workstation.

                                            ________________    ___________

      of all servers of a specific          (2) An input or output point of a

      type.                                 system that uses telecommunication

                                            facilities; for example, one or more

  SHIELDED TWISTED PAIR (STP).  An          systems, computers, terminals,

  electrically conductive cable made        devices, and associated programs at

  up of one or more pairs of                a particular location that can send

  individually shielded wires with a        or receive data over a

  shield over all the pairs.                telecommunication line.  See also

                                            attaching device, workstation.

                                            _________________ ___________

  SIGNAL.  (1) A time-dependent value

  attached to a physical phenomenon         STP.  Shielded twisted pair.

  for conveying data.  (2) A variation

  of a physical quantity, used to           SUBSYSTEM.  A secondary or

  convey data.                              subordinate system, or programming

                                            support, usually capable of

  SIMPLE NETWORK MANAGEMENT PROTOCOL        operating independently of or

  (SNMP) AGENT.  Software stored in         asynchronously with a controlling

  the device being managed that             system.

  exchanges Simple Network Management

  Protocol information with a network       SWITCH.  On an adapter, a mechanism

  management station.                       used to select a value for, enable,

                                            or disable a configurable option or

  SIMPLE NETWORK MANAGEMENT PROTOCOL        feature.

  (SNMP).  In the internet suite of

  protocols, a network management           SYNCHRONOUS.  (1) Pertaining to two

  protocol that is used to monitor          or more processes that depend on the

  routers and attached networks.  SNMP      occurrences of a specific event such

  is an application layer protocol.         as common timing signal. (I) (A)

  Information on devices manages is         (2) Occurring with a regular or

  defined and stored in the                 predictable timing relationship.

  application's Management Information

  Base (MIB).                               SYSTEM.  In data processing, a

                                            collection of people, machines, and

  SLIP.  Serial Line Internet               methods organized to accomplish a

  Protocol.                                 set of specific functions. (I) (A)



  SNMP.  Simple Network Management

  Protocol.





  X-14  8225 Hub Installation and Planning Guide





  SYSTEM CONFIGURATION.  A process          THROUGHPUT.  (1) A measure of the

  that specifies the devices and            amount of work performed by a

  programs that form a particular data      computer system over a given period

  processing system.                        of time, for example, number of jobs

                                            per day. (I) (A) (2) A measure of

  SYSTEM UNIT.  (1) A part of a             the amount of information

  computer that contains the                transmitted over a network in a

  processing unit, and may contain          given period of time.  For example,

  devices such as disk and diskette         a network's data transfer rate is

  drives.  (2) In an IBM personal           usually measured in bits per second.

  computer, the unit that contains the

  processor circuitry, ROM, RAM, and        TIA.  Telecommunications Industry

  the I/O channel.  It may have one or      Association.

  more disk or diskette drives.

                                            TOPOLOGY.  The physical or logical

                                            arrangement of nodes in a computer

     +---+                                  network.  Examples include ring

     | T |                                  topology and bus topology.

     +---+

                                            TRANSCEIVER.  Any device that can

  TELECOMMUNICATION LINE.  Any              transmit and receive traffic.

  physical medium, such as a wire,

  that is used to transmit data.            TRANSMISSION MEDIUM.  (1) A physical

                                            carrier of electrical energy or

  TELEPHONE TWISTED PAIR.  See              electromagnetic radiation.  (2) The

  unshielded twisted pair (UTP).            physical medium that conveys data

  _____________________________

                                            between data stations; for example,

  TELNET.  In TCP/IP, an application        twisted-pair wire, optical fiber,

  protocol that allows a user at one        coaxial cable. (T)

  site to access a remote system as if

  the user's display station were           TRAP.  In the Simple Network

  locally attached.  Telnet uses the        Management Protocol (SNMP), a

  Transmission Control Protocol as the      message sent by a managed node

  underlying protocol.                      (agent function) to a management

                                            station to report an exception

  TERMINAL.  In data communication, a       condition.

  device, usually equipped with a

  keyboard and display device, capable      TRIVIAL FILE TRANSFER PROTOCOL

  of sending and receiving                  (TFTP).  In TCP/IP, a protocol used

  information.                              for transferring files to and from

                                            host computers.  It is a simpler

  TERMINAL EMULATOR.  A program that        form of the File Transfer Protocol,

  allows a device such as a                 requiring no authentication and

  microcomputer or personal computer        using less memory for storage.

  to enter and receive data from a

  computer system as if it were a           TWISTED PAIR.  A transmission medium

  particular type of attached               that consists of two insulated

  terminal.                                 conductors twisted together to

                                            reduce noise. (T)

  TFTP.  Trivial File Transfer

  Protocol.





                                      Glossary of Terms and Abbreviations  X-15





     +---+                                  has significant new code or new

     | U |                                  function.

     +---+



  UNIVERSALLY ADMINISTERED ADDRESS.            +---+

  The address permanently encoded in           | W |

  an adapter at the time of                    +---+

  manufacture.  All universally

  administered addresses are unique.        WATT.  Measurement of electrical

  Contrast with locally administered        power.

                ____________________

  address.

  _______

                                            WORKSTATION.  (1) An I/O device that

  UNSHIELDED TWISTED PAIR (UTP).  One       allows either transmission of data

  or more twisted pairs of copper wire      or the reception of data (or both)

  in the unshielded voice-grade cable       from a host system, as needed to

  commonly used to connect a telephone      perform a job:  for example, a

  to its wall jack.                         display station or printer.  (2) A

                                            configuration of I/O equipment at

  UTP.  Unshielded twisted pair.            which an operator works. (T) (3) A

                                            terminal or microcomputer, usually

                                            one connected to a mainframe or

     +---+                                  network, at which a user can perform

     | V |                                  tasks.

     +---+

                                            WRITE COMMUNITY.  In SNMP, one or

  V.  Volt.                                 more network management stations

                                            that are known to a given agent and

  VT100.  A character-mode                  that are authorized to write to the

  workstation.  Characters are sent         MIB.

  immediately to the host system when

  a key is pressed.                         WRITE COMMUNITY NAME.  A text name

                                            that defines the write community: a

  VARIABLE.  (1) In computer                password.

  programming, a character or group of

  characters that refers to a value

  and, in the execution of a computer          +---+

  program, corresponds to an address.          | X |

  (2) A quantity that can assume any           +---+

  of a given set of values. (A)

                                            XMODEM.  A protocol for file

  VERSION.  A separate IBM-licensed         transfer between devices that

  program, based on an existing             specifies the sending of data in

  IBM-licensed program, that usually        128-byte blocks and is

                                            error-correcting.





  X-16  8225 Hub Installation and Planning Guide





  INDEX

  _____





     +----------+                           BootP (Bootstrap Protocol)

     | NUMERICS |                            (continued)

     +----------+                              using to set IP address  3-54

                                            Bootstrap Protocol

  100BASE-FX                                   See BootP (Bootstrap Protocol)

     cabling requirements  1-10

     maximum segment length  1-8

  100BASE-TX                                   +---+

     cabling requirements  1-9                 | C |

     connecting cables to ports  2-4           +---+

     maximum segment length  1-8

  10BASE-T                                  cables

     cabling requirements  1-10                100BASE-TX specifications  1-9

     maximum segment length  1-8               acceptable types  1-9

  10BASE-T4                                    connecting

     cabling requirements  1-10                   tips  2-4

     maximum segment length  1-8                  to 100BASE-TX ports  2-4

                                                  to Management port  2-6

                                               crossover

     +---+                                        pinout diagrams for  A-2

     | A |                                     for 100BASE-FX Fast Expansion

     +---+                                      Module  1-10

                                               for 100BASE-T4 Fast Expansion

  acoustic characteristics  1-14                Module  1-10

  auto-discovery  3-14                         for 10BASE-T/100BASE-TX Fast

  auto-partitioning of ports  1-2               Expansion Module  1-10

                                               for Management port  1-10

                                               hub interconnect

     +---+                                        use in creating stacks  1-3

     | B |                                        using to interconnect

     +---+                                         8225s  1-4

                                               labeling  2-4

  backup ports                                 maximum segment length  1-8

     assigning  1-7                            null-modem

     configuring  3-26                            cable for Management

     how activated  1-7                            port  1-10

     resetting  3-27                              connecting to Management

  BBS, IBM PC Company, telephone                   port  2-6

   number of  3-51                             optical fiber

  BootP (Bootstrap Protocol)                      cabling requirements  1-10

     configuring  3-18                            Ethernet planning and  1-8

     requests  3-54                               maximum segment length  1-8

     routers and  3-54                         pinout diagrams  A-1

     sample IP configuration                   planning  1-8

      file  3-55





  (C) Copyright IBM Corp. 1996                                             X-17





  cables (continued)                        EtherWatch  1-2, 3-48

     serial                                    See also LEDs (light-emitting

        Management port and  1-10               diodes)

     shielded twisted pair (STP)  1-9

     standards  1-9

     straight-through                          +---+

        pinout diagrams for  A-1               | F |

     unshielded twisted pair                   +---+

      (UTP)  1-9

  calling IBM Service  4-19                 Fast Expansion Module

  collision domain  1-5                        See FEM (Fast Expansion Module)

  collisions, effects of  1-5               features  1-1

  configuration                             FEM (Fast Expansion Module)

     of Model 001  3-4                         cable and connector

     of Model 002 and Model 003  3-7            requirements  1-9

  contents of package  2-1                     choices of  1-1, 4-10

  crossover cables                             configuring  3-24

     pinout diagrams for  A-2                  installation procedure for  2-4

                                               location of  1-1

                                               replacement of  4-10

     +---+                                     statistics  3-46

     | D |                                     using to interconnect 8225s  1-4

     +---+                                  field-replaceable units

                                               See FRUs

  default gateway, setting                  frame formats

     using BootP  3-55                         repeated  1-2

     using user interface  3-15                SNMP management and  1-3

  diagnostic self-test results              FRUs (field-replaceable units)  4-1

     Model 001  4-5

     Models 002 and 003  4-6

  dimensions of 8225  1-13                     +---+

  disabling ports                              | H |

     auto-partitioning  1-2                    +---+

     using Port Configuration  3-23

  documentation of installation  1-16       help  4-19

  downloading microcode                     HMI (Hub Management Interface)  1-3

     See microcode, upgrading               hot-swapping 8225s

                                               consequences of  4-4

                                               procedure for  4-4

     +---+                                  hub interconnect cable

     | E |                                     See cables, hub interconnect

     +---+                                  Hub Management Interface

                                               See HMI

  enabling ports                            hub replacement  4-4

     automatically, using port              hubs, configuring  3-17

      backups  3-26

     using Port Configuration  3-23

  environmental requirements  1-14

  error statistics

     See statistics, error and

      performance





  X-18  8225 Hub Installation and Planning Guide





     +---+                                     +---+

     | I |                                     | M |

     +---+                                     +---+



  IBM PC Company BBS, telephone number      MAC address  3-54

   of  3-51                                 management bus

  IBM PC Company URL  3-53                     benefits of  1-5

  impedance matching device, when to           function of  1-4

   use  1-9                                 Management Information Base

  indicators                                   See MIB (Management Information

     See LEDs (light-emitting diodes)           Base)

  installation procedures                   management port

     for Fast Expansion Module  2-4            cabling requirements for  1-10

     for rack-mounting  2-1                    connecting cables to  2-6

     for redundant power module.  2-3       MIB (Management Information Base)

     for surface-mounting  2-2                 getting new  3-51

  installation, documentation of  1-16         IBM 8225, listing of  B-1

  intrusion protection  1-2                    list of supported  1-2

  IP                                        microcode

     trap managers, configuring  3-12          getting new  3-51

  IP address, setting                          upgrading

     for other 8225s  3-55                        using TFTP  3-31

     using BootP  3-54                            using Xmodem  3-33

     using user interface  3-15             models, differences between

  IPX                                          in configuration retention  1-10

     trap managers, configuring  3-13          in manageability  1-1, 1-2

  IPX address, setting                      modem

     using user interface  3-15                cabling requirements for

                                                Management port  1-10

                                               connecting to Management

     +---+                                      port  2-6

     | J |                                     forcing DSR signals  2-6

     +---+                                     using to get MIB  3-51

                                               using to get microcode  3-51

  jabber protection  1-2                    mounting options  1-2, 2-1





     +---+                                     +---+

     | L |                                     | N |

     +---+                                     +---+



  labeling cables  2-4                      network management applications

  LEDs (light-emitting diodes)               supported  1-3

     appearance during POST  2-7            noise emission values  1-14

     location of  1-1, 3-47                 nonvolatile random access memory

     meanings of  3-48                         See NVRAM (nonvolatile random

     trouble symptoms  4-1                      access memory)

  light-emitting diodes                     notices

     See LEDs (light-emitting diodes)          electronic emission  C-4

                                               general product  C-3





                                                                    Index  X-19





  notices (continued)                          +---+

     trademarks  C-5                           | R |

     warranty  C-1                             +---+

  null-modem cable

     See cables, null-modem                 redundant connections

  NVRAM (nonvolatile random access             See backup ports

   memory)  1-10                            redundant power module

                                               installation procedure for  2-3

                                               replacement of  4-13

     +---+                                  remote monitoring agent

     | O |                                     See RMON (remote monitoring

     +---+                                      agent)

                                            removing parts  4-7

  optical fiber cables                      replacement

     See cables, optical fiber                 of fan  4-11

                                               of Fast Expansion Module  4-10

                                               of management board  4-7

     +---+                                     of power module  4-13

     | P |                                     of SIMM memory  4-9

     +---+                                  replacement and optional parts  4-15

                                            replacing hubs  4-4

  package contents  2-1                     replacing parts  4-7

  panels                                    RMON (remote monitoring agent)

     See screens                               differences between models

  parts, replacement and                        and  1-1

   optional  4-15                              inter-8225 communications

  performance statistics                        and  1-4

     See statistics, error and

      performance

  performance, improving  1-5                  +---+

  phone support  4-20                          | S |

  pinout diagrams  A-1                         +---+

  planning references  xvi

  ports                                     sample BootP configuration

     auto-partitioning of  1-2               file  3-55

     configuring  3-22                      screens

     enabling and disabling  3-23              Model 001

  POST (power-on self-test)                       FEM Status  3-6

     appearance of LEDs during  2-7               Main Menu  3-4

     BootP requests and  3-54                  Model 002 and Model 003

     results  4-5, 4-6                            Auto-Discovery

  power requirements  1-13                         Configuration  3-14

  power-on self-test                              Console Lockout  3-37

     See POST (power-on self-test)                FEM Port Configuration  3-24

  problem determination  4-1                      FEM Port Statistics  3-46

                                                  Hub Configuration  3-18

                                                  Hub Configuration: Hub

                                                   Selection Menu  3-17

                                                  Hub ID Configuration  3-20

                                                  Hub Statistics  3-41

                                                  Hub Statistics: Hub Selection

                                                   Menu  3-40





  X-20  8225 Hub Installation and Planning Guide





  screens (continued)                       SLIP (Serial Line Internet Protocol)

     Model 002 and Model 003                   configuration  3-53

      (continued)                              use in problem determination  4-4

        IP Trap Managers  3-12              SNMP (Simple Network Management

        IPX Trap Managers  3-13              Protocol)

        Main Menu  3-7                         auto-discovery  3-14

        Port Backups  3-26                     communities, configuring  3-11

        Port Configuration  3-23               differences between models

        Port Configuration: Port                and  1-1

         Selection Menu  3-22                  Ethernet frame formats and  1-3

        Port Intrusion Control  3-29           IP trap managers,

        Port Intrusion Control: Hub             configuring  3-12

         Selection Menu  3-28                  IPX trap managers,

        Port Statistics  3-44                   configuring  3-13

        Port Statistics: Port                  supported MIBs  1-2

         Selection Menu  3-43               SNMP over Ethernet,

        Segment Configuration  3-15          configuring  3-15

        Segment Statistics  3-38            space requirements  1-14

        SNMP Communities  3-11              stack

        SNMP Configuration  3-10               creating  1-3

        System Information  3-9                definition of  1-3

        TFTP Download  3-31                    inter-8225 communications

        User Passwords  3-35                    and  1-4

        Xmodem Download  3-33                  managed  1-4

  segmenting 8225s within stacks               segmenting  1-6

     configuring  3-15                         space requirements for  1-14

     consequences of  1-6                   statistics

     reasons for  1-5                          error and performance

  segments, maximum lengths of  1-8               hub  3-41

  serial cable                                    port  3-44

     See cables, serial                           segment  3-38

  Serial Line Internet Protocol             STP cables

     See SLIP (Serial Line Internet            See cables, shielded twisted pair

      Protocol)                             straight-through cables  A-1

  serial port                                  pinout diagrams for  A-1

     See management port                    subnet mask, setting  3-15

  service information, warranty  4-19       support  4-19

  Service, calling IBM  4-19                supported MIBs  1-2

  servicing 8225s  4-1, 4-19                supported network management

  setting an IP address                      applications  1-3

     See IP address, setting                symptoms, LEDs  4-1

  setting an IPX address

     See IPX address, setting

  setting up the 8225

     See installation procedures

  shielded twisted pair (STP) cables

     See cables, shielded twisted pair

      (STP)

  Simple Network Management Protocol

     See SNMP





                                                                    Index  X-21





     +---+                                     +---+

     | T |                                     | W |

     +---+                                     +---+



  technical references  xvi                 warranty  C-1

  telephone support  4-20                   warranty service information  4-19

  Telnet, use in management  3-53

  TFTP (Trivial File Transfer

   Protocol)                                   +---+

     configuration  3-31                       | X |

     upgrading microcode using  3-31           +---+

        configuration  3-18

  topology, documenting  1-16               Xmodem

  trademarks  C-5                              upgrading microcode using  3-33

  traps, SNMP

     IP, configuring  3-12

     IPX, configuring  3-13

  Trivial File Transfer Protocol

     See TFTP (Trivial File Transfer

      Protocol)

  troubleshooting  4-19





     +---+

     | U |

     +---+



  unshielded twisted pair (UTP) cables

     See cables, unshielded twisted

      pair (UTP)

  upgrades  4-16

  upgrading microcode

     See microcode, upgrading

  URL for IBM PC Company  3-53

  user interface program  1-2, 3-1

  UTP cables

     See cables, unshielded twisted

      pair





     +---+

     | V |

     +---+



  VT100

     use in management  3-1

     use in problem determination  4-4

     use with modem  3-2

     use with null-modem cable  3-1





  X-22  8225 Hub Installation and Planning Guide





                         IBM





                         Part Number: 42H3743



                         Printed in U.S.A.





