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# Auxiliary Internal Rings

Copy Values

DLCI

Enable

ID

MAC Address

Port

Ring Number

  The Media Access Control (MAC) address and ring number are internal to the unit. If the PU configuration specifies the associated DLCI, the unit routes the PU's session through that internal route.
  This enables load sharing and session resiliency in the event of a route failure.
  This feature also enables multiple PUs to use the same destination device when connected to a Tandem host. Each PU, however, must use a unique internal route to the destination. These internal routes are defined in this dialog.

ID

  This field identifies the internal ring as IM2 -- IM9 and cannot be changed. The primary internal ring is simply referred to as the unit's IMA.

Enable

  You may define up to eight auxiliary routes on the unit. Enable the routes you want to define by clicking inside the route's enable box and selecting YES.

MAC Address

  This MAC address is used in conjunction with the ring number to define a specific route. This address must be unique to the network.
  Range: 400000000001 -- 7FFFFFFFFFFF

Ring Number

  This ring number is used in conjunction with the MAC address to define a specific route within the unit. This ring must be unique to the network. Do not assign ring numbers 1 -- 3, they are reserved for factory-fresh units.
  Range: 004 -- 999
  Note: You can assign ring numbers 1 - 3, however, it is highly unadvisable.

Port

  This is the WAN port through which sessions are forwarded.
  Range: 1 -- 8

DLCI

  This is the Data Link Connection Identifier (DLCI) through which sessions are forwarded.
  Range: 16 -- 1023
  Note: DLCIs 1 -- 15 are reserved according to standards. DLCI 32 is reserved for dial backup.

Copy Values

  Click on this button to copy the values you have specified for ID 2 to IDs 3-9. This is particularly useful if you want the Port, DLCI and Ring numbers to be the same for each route. The Enable and MAC address fields are not copied.
  After the values are copied, you will have to manually enable the routes you intend to use. If a route is left disabled, the other values for that route will be ignored.