Avaya P580 - Manual (Page 263)

Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1 7-5
Configuring Redundancy Options
If the Primary controller fails, the redundant controller takes over
switch controller operation. When an element fails, diagnostics run
automatically to test the hardware. Information about a failed
controller or element displays in the Switch Fabric Status window in
the Web Agent. The redundant element takes over the function of
the failed element until it is replaced.
* Note: In the event that the Primary switch controller fails, the
switch will reset and record an entry of the event in the
shutdown log.
If the Active element fails, the Active and Standby
Supervisor modules can no longer communicate, or be
synchronized. No health messages will be passed.
However, the Standby Supervisor module will become
Active if the current Active Supervisor module fails.
Installing and Enabling Redundant Hardware
The standard switch configuration does not include a redundant
controller or element. The correct process is to:
■
Install the redundant hardware
■
Enable the redundant hardware using either the Web Agent
or the CLI.
After the redundant hardware is enabled, the applicable redundant
component takes over if either a controller or any element fails.