Stateful Switchover.pdf - Cisco Learning Home

Stateful Switchover
Verifying SSO Configuration
SUMMARY STEPS
DETAILED STEPS
Step 1 enable
This task shows how to verify that SSO is configured on the networking device.
Stateful Switchover
Configuration Tasks
Note The output of these commands will vary based on your device configuration and system site
requirements. For examples of command output, see
1. enable
2. show redundancy [clients | counters | debug-log | handover | history | switchover history |
states | inter-device]
3. show redundancy [clients | counters | debug-log | handover | history | switchover history |
states | inter-device]
Example:
Router> enable
Step 2 show redundancy [clients | counters | debug-log
| handover | history | switchover history |
states | inter-device]
Example:
Router# show redundancy
Step 3 show redundancy [clients | counters | debug-log
| handover | history | switchover history |
states | inter-device]
Example:
Router# show redundancy states
Performing a Fast Software Upgrade
Enables privileged EXEC mode.
• Enter your password if prompted.
Verifies that SSO is configured on the networking device.
Verifies that the device is running in SSO mode. The states
keyword specifies whether the unit is running in SSO mode.
The FSU procedure allows you to upgrade (or downgrade) the Cisco IOS image on the RPs. Cisco IOS
software is upgraded on the standby RP, and a manual switchover is performed. The new Cisco IOS image
can then be upgraded on the other RPs.
Note During the upgrade process, different images will be loaded on the RPs for a very short period of time.
If a switchover occurs during this time, the device will recover in HSA, RPR or RPR+ mode, depending
on the networking device.
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