Avaya Cajun P580, User Manual, Page: 294 / 770

10-4 User Guide for the Avaya P580 and P882 Multiservice Switches, v6.0
Chapter 10
Figure 10-2. Layout of the Redundant Backplane for P882
Chassis
The Avaya Multiservice switches are equipped with diagnostics to:
■
Monitor the status of the Primary switch controller.
■
Monitor the status of a Active element.
■
Monitoring of Health Check status messages sent between the
Active and Standby supervisors.
If the Active supervisor fails, the Standby supervisor assumes supervisor
operation. Information about a failed Supervisor (CPU) displays in the CPU
Redundancy Status Dialog Box window.
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.