Cisco 4500M User Manual

6-11
Software Configuration Guide—Release 12.2(25)EW
OL-6696-01
Chapter 6 Configuring Supervisor Engine Redundancy Using RPR and SSO
Performing a Manual Switchover
Note The auto-sync command controls the synchronization of the config-reg, bootvar, and startup/private
configuration files only. The calendar and VLAN database files are always synchronized when they
change. In SSO mode, the running-config is always synchronized.
This example shows how to reenable the default automatic synchronization feature using the auto-sync
standard command to synchronize the startup-config and config-register configuration of the active
supervisor engine with the redundant supervisor engine. Updates for the boot variables are automatic
and cannot be disabled.
Switch(config)# redundancy
Switch(config-red)# main-cpu
Switch(config-r-mc)# auto-sync standard
Switch(config-r-mc)# end
Switch# copy running-config startup-config
Note To manually synchronize individual elements of the standard auto-sync configuration, disable the default
automatic synchronization feature.
This example shows how to disable default automatic synchronization and allow only automatic
synchronization of the config-registers of the active supervisor engine to the redundant supervisor
engine, while disallowing synchronization of the startup configuration:
Switch(config)# redundancy
Switch(config-red)# main-cpu
Switch(config-r-mc)# no auto-sync standard
Switch(config-r-mc)# auto-sync config-register
Switch(config-r-mc)# end
Performing a Manual Switchover
This section describes how to perform a manual switchover (from the active supervisor engine to the
redundant supervisor engine) for test purposes. We recommend that you perform a manual switchover
prior to deploying SSO in your production environment.
Note This discussion assumes that SSO has been configured as the redundant mode.
To perform a manual switchover, perform this task on the active supervisor engine:
Command Purpose
Step 1
Switch# show redundancy
Verifies that the peer state is in the STANDBY HOT
state.
See the example of the show redundancy states
command on page 6-10.
Step 2
Switch# redundancy force-switchover
Launches switchover from the active supervisor engine
to the redundant supervisor engine.
If the state of the redundant supervisor engine is not
standby hot, this command will not execute.

Cisco 4500M Specifications

General

Brand	Cisco
Model	4500M
Category	Network Router
Language	English