Stateful Switchover.pdf - Cisco Learning Home

Stateful Switchover
Step 11 config-register value
Step 12 exit
Command Purpose
Example:
Router(config)# config-register 0x2102
Example:
Router(config)# exit
Step 13 copy running-config startup-config
Example:
Router# copy running-config
startup-config
Step 14 For Cisco 12000 series Internet routers:
reload standby-cpu
For other Cisco routers:
hw-module standby-cpu reset
Example:
Router# reload standby-cpu
or
Router# hw-module standby-cpu reset
Step 15 For Cisco 10000 series Internet routers:
redundancy force-switchover main-cpu
For other Cisco routers:
redundancy force-switchover
Example:
Router# redundancy force-switchover
main-cpu
or
Router# redundancy force-switchover
Troubleshooting Tips
The following tips can help troubleshoot SSO operation.
Stateful Switchover
Configuration Tasks
The standby RP was reset, but there are no messages describing what happened.
To display a log of SSO events and clues as to why a switchover or other event occurred, enter the
show redundancy history command on the newly active RP:
Router# show redundancy history
Modifies the existing configuration register setting to reflect the
way in which you want to load a system image.
• value—0x2 to 0xFFFF.
Exits configuration mode and returns the router to privileged
EXEC mode.
Saves the configuration changes to your startup configuration in
NVRAM so that the router will boot with the configuration you
have entered.
Resets and reloads the standby processor with the specified
Cisco IOS image, and executes the image.
Forces a switchover to the standby RP.
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