Redundant Supervisor; Media Modules - Avaya Cajun P550R Installation Manual

Chapter 1

Redundant Supervisor

Media Modules

1-10
The redundant supervisor module is an auxiliary (standby)
supervisor module that acts as a fault-tolerant supervisor in the
event that your active supervisor fails. The redundant supervisor
provides a seamless solution to switch failure. 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 backup to
the active supervisor. If the active supervisor does fail, the
redundant module quickly assumes control with the least possible
affect on network operation. No user intervention is required for the
CPU module switchover. The management view is accessible
without changing IP or MAC addresses. The switch version (ver) is
logged and indicated via an SNMP trap.
* Note: If you installed a second supervisor module in slot 2 in
your switch, but do not require redundant supervisor
operation, you can remove the supervisor module from
slot 2 and restart your switch. There is no need to
upgrade the firmware if you are not running redundant
supervisors.
16 MB of memory is required on layer 2 supervisor
modules. If you have a P550R switch and the supervisor
module is not configured with 16 MB of memory, you
should order one of the following upgrades:
Model M5500-MEM16 for 16 MB upgrade
Or
Model M5500-MEM32 for 32 MB upgrade
All of the layer 3 media modules have the same general function as
the layer 3 supervisor module except for the following:
The number and type of physical interfaces
Hardware-based routing and bridging capacity
Bridging and routing are performed on the input side of each media
module. Frames whose destination Media Access Control (MAC)
address is on the same Virtual LAN (VLAN) as the interface on
which they arrived are bridged. Frames that are going from one
VLAN to another are routed. Some frames are both bridged and
routed, as is the case with multicast.
Cajun P550R/P880/P882 Installation Guide