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Cajun P550R/P880/P882 Switch User Guide
Introduction to the Cajun P550R/P880/P882 Switch
1-11
Redundant Supervisor
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.
The redundant supervisor introduces the concepts of an internal
network and internal network mask.
The internal IP network consists of an internal network Virtual LAN
(VLAN) that is only used to connect the redundant supervisors in
slots 1 and 2. Health messages get passed and image and
configuration synchronization access between the supervisor
modules are done over the internal IP network. The internal IP
network uses the internal network IP mask.
The slot specific Ethernet console IP address is an additional IP
address that is always assigned to the supervisor modules in slot 1
and slot 2, regardless of whether the supervisor module slot 1 is
active or standby. always use this address if you want to access the
supervisor module in either slot.
The firmware in initial versions of the P550 layer 2 supervisor
(model M5500-SUP-8) does not fully support redundant
supervisors. The supervisor module will report the following
message to the console port and the LED banner when it is installed
in a chassis with a second supervisor:
If redundant supervisor modules are required in your switch, then
the supervisor module(s) that report this message must be
upgraded. To get the upgrade, please contact:
Avaya CTC RMA Department:
Phone: 800-950-7925 ext. 9532
e-mail: rma@Avayactc.com
If you installed a second supervisor module in slot 2 in your switch,
but do not require redundant supervisor operation, you can remove