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Chapter 4 Troubleshooting Procedures
Nortel Networks 5399 Access Switch Hardware Installation Guide
To preserve the configuration parameters of the Remote Access
Concentrator module you are replacing, follow the procedures in
“Preparing for a Hot Swap” on page 4-19 (below) and “Completing the
Hot Swap” on page 4-22.
Verify that the backplane segment bank selector is set for the
correct segment bank before installing a replacement module.
For more information on jumper and switch settings, see
Chapter 2
.
Preparing for a Hot Swap
The Remote Access Concentrator can be inserted into or removed from
a chassiswithout interruptingservice to othermodules within the System
5000 hub. This ability is referred to as “hot swapping.”
The Remote Access Concentrator holds 64KB of configuration
informationin EEPROM.This informationis periodicallysenttothe host
server to be saved in a file. During a hot swap, the new Remote Access
Concentrator reads in this file at boot time and overwrites its EEPROM
withtheconfigurationinformationfrom theRemoteAccessConcentrator
it is replacing. The new Remote Access Concentrator then functions as
the previousRemoteAccess Concentrator,except for the LAT key, which
needs to be reprogrammed.
If no EEPROM overwrite is desired when hot swapping, select
default values for that slot from the supervisory module on the
service port terminal.