Performing A Manual Switchover - Cisco Catalyst 4500 series Administration Manual

Performing a Manual Switchover

To manually synchronize individual elements of the standard auto-sync configuration, disable the default
Note
automatic synchronization feature.
When you configure the auto-sync standard, the individual sync options such as no auto-sync
Note
startup-config are ignored.
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.
This discussion assumes that SSO has been configured as the redundant mode.
Note
To perform a manual switchover, perform this task on the active supervisor engine:
Command
Step 1
Switch# show redundancy
Step 2
Switch# redundancy force-switchover
Be aware of these usage guidelines:
•
•
Software Configuration Guide—Release IOS XE 3.5.0E and IOS 15.2(1)E
10-12
Chapter 10 Configuring Supervisor Engine Redundancy Using RPR and SSO on Supervisor Engine 6-E and Supervisor
To force a switchover, the redundant supervisor engine must be in a standby hot state. You can verify
the state with the show redundancy command. If the state is not standby hot, the
redundancy force-switchover command does not execute.
Use the redundancy force-switchover command, rather than the reload command, to initiate a
switchover. The redundancy force-switchover command first verifies that the redundant
supervisor engine is in the correct state. If you enter the reload command and the status is not
standby hot, the reload command resets the current supervisor engine only.
Purpose
Verifies that the peer state is in the standby hot state.
See the example of the show redundancy states
command on page 6-10.
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 does not execute.
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