Manual

Cisco IOS In Service Software Upgrade Process
How to Perform the ISSU Process
23
Cisco IOS Release 12.2(28)SB
DETAILED STEPS
Configuration Examples for Performing ISSU
This section contains the following configuration examples:
• Verifying Redundancy Mode Before Beginning the ISSU Process: Example, page 23
• Verifying the ISSU State: Example, page 24
• Performing the ISSU Process: Example, page 25
• Aborting the ISSU Process: Example, page 29
• Verifying Rollback Timer Information: Example, page 30
Verifying Redundancy Mode Before Beginning the ISSU Process: Example
Before you begin the ISSU process, verify the redundancy mode for the system. NSF and SSO must be
configured before attempting an ISSU. The following example displays verification that the system is in
SSO mode and that slot A—RP A is the active R, and slot B—RP B is the standby RP. Both RPs are
running the same Cisco IOS software image.
Router# show redundancy states
my state = 13 -ACTIVE
peer state = 8 -STANDBY HOT
Mode = Duplex
Unit = Primary
Unit ID = 0
Redundancy Mode (Operational) = SSO
Redundancy Mode (Configured) = SSO
Split Mode = Disabled
Manual Swact = Enabled
Communications = Up
client count = 31
client_notification_TMR = 30000 milliseconds
RF debug mask = 0x0
Router# show redundancy
Command or Action Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
show issu comp-matrix {negotiated | stored}
Example:
Router# show issu comp-matrix
Displays information regarding the ISSU compatibility
matrix.