Manual

Cisco IOS In Service Software Upgrade Process
How to Perform the ISSU Process
16
Cisco IOS Release 12.2(28)SB
Stopping the ISSU Rollback Timer, page 18 (required)
Verifying the ISSU Software Installation, page 18 (required)
Aborting a Software Upgrade Using ISSU, page 20 (optional)
Configuring the Rollback Timer to Safeguard Against Upgrades, page 21 (optional)
Displaying ISSU Compatibility Matrix Information, page 22 (optional)
Loading Cisco IOS Software on the Standby RP
This task describes how to use ISSU to load Cisco IOS software to the standby RP.
Prerequisites
Ensure that both the active and the standby RPs are configured in SSO mode. Refer to the Stateful
Switchover document for more details on how to configure SSO mode on RPs.
Ensure that the new version of Cisco IOS software image is already loaded in the file system of both
the active and standby RPs. Also ensure that appropriate boot parameters are set for the standby RP.
Optionally, customers may want to perform additional tests and commands to determine the current
state of peers and interfaces for later comparison.
SUMMARY STEPS
1. enable
2. issu loadversion active-slot active-image standby-slot standby-image [force]
3. show issu state [detail]