Avaya P580 - Manual (Page 259)

Avaya P550R, P580, P880, and P882 Multiservice Switch User Guide, v5.3.1 7-1
7 Configuring Redundancy
Options
Overview
The Avaya Multiservice Switch can be configured with redundancy
to provide fault tolerance.
Supervisor
Functions
The Avaya Multiservice Switch supervisor module manages the
resources of the switch, provides access to these resources and
supports a number of network protocols. These resources include
configuration information, spanning tree topology, address
forwarding tables, routing tables, and network statistics. Access is
provided to these resources via console CLI (command line
interface), Web interface, SNMP, and telnet.
Redundant
Supervisors
The redundant supervisor module is an auxiliary “standby”
supervisor module that acts as a fault-tolerant supervisor in the
event that the “Active” supervisor fails. Once the redundant
supervisor is installed, loaded with the same software version as the
Active supervisor, and synchronized, it is ready to act as a redundant
or “standby” supervisor. If the Active supervisor does fail, the
redundant supervisor assumes control of network operation. No
user intervention is required for the Supervisor module failover. The
management view is accessible without changing IP or MAC
addresses. The event is logged and indicated via an SNMP trap.
Notification of this change is provided by a console message and an
event log message.
Multiple
Software
Versions
Up to two software versions can be saved on the Avaya Multiservice
Switch supervisor module.