Manual

Cisco IOS In Service Software Upgrade Process
How to Perform the ISSU Process
22
Cisco IOS Release 12.2(28)SB
DETAILED STEPS
Displaying ISSU Compatibility Matrix Information
The ISSU compatibility matrix contains information about other software images about the version in
question. This compatibility matrix represents the compatibility of the two software versions, one
running on the active and the other on the standby RP, and the matrix allows the system to determine the
highest operating mode it can achieve. This information helps the user identify whether or not to use
ISSU.
This task explains how to display information about the ISSU compatibility matrix.
SUMMARY STEPS
1. enable
2. show issu comp-matrix {negotiated | stored}
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
configure issu set rollback timer seconds
Example:
Router(config)# configure issu set rollback
timer 3600
Configures the rollback timer value.
Step 4
exit
Example:
Router(config)# exit
Returns the user to privileged EXEC mode.
Step 5
show issu rollback timer
Example:
Router# show issu rollback timer
Displays the current setting of the ISSU rollback timer.