Manual

Cisco IOS In Service Software Upgrade Process
How to Perform the ISSU Process
27
Cisco IOS Release 12.2(28)SB
BOOTLDR =
Configuration register = 0x102
Router# show issu state
Slot = B
RP State = Active
ISSU State = Run Version
Boot Variable =
disk0:c10k2-p11-mz.2.20040830,12;disk0:c10k2-p11-mz.1.20040830,1;
Slot = A
RP State = Standby
ISSU State = Run Version
Boot Variable = disk0:c10k2-p11-mz.1.20040830,1;
Router# show issu state detail
Slot = B
RP State = Active
ISSU State = Run Version
Boot Variable =
disk0:c10k2-p11-mz.2.20040830,12;disk0:c10k2-p11-mz.1.20040830,1;
Operating Mode = SSO
Primary Version = disk0:c10k2-p11-mz.2.20040830
Secondary Version = disk0:c10k2-p11-mz.1.20040830
Current Version = disk0:c10k2-p11-mz.2.20040830
Slot = A
RP State = Standby
ISSU State = Run Version
Boot Variable = disk0:c10k2-p11-mz.1.20040830,1;
Operating Mode = SSO
Primary Version = disk0:c10k2-p11-mz.2.20040830
Secondary Version = disk0:c10k2-p11-mz.1.20040830
Current Version = disk0:c10k2-p11-mz.1.20040830
The new active RP is now running the new version of software, and the standby RP is running the old
version of software and is in the STANDBY-HOT state.
Stopping the Rollback Process: Example
In the following example, the “Automatic Rollback Time” information indicates the amount of time left
before an automatic rollback will occur. Enter the issu acceptversion command within the time period
specified by the rollback timer to acknowledge that the RP has achieved connectivity to the outside
world; otherwise, the ISSU process is terminated, and the system reverts to the previous version of
Cisco IOS software by switching to the standby RP.
Router# show issu rollback-timer
Rollback Process State = In progress
Configured Rollback Time = 45:00
Automatic Rollback Time = 29:03
Entering the issu acceptversion command stops the rollback timer:
Router# issu acceptversion b disk0:c10k2-p11-mz.2.20040830