Cisco Catalyst 4500 Series, Software Configuration Manual

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Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Chapter 8 Configuring the Cisco IOS XE In Service Software Upgrade Process
How to Perform the ISSU Process
This example displays the Timer before you stop it. In the following example, the “Automatic Rollback
Time” information indicates the amount of time remaining before an automatic rollback will occur.
Switch> enable
Switch# show issu rollback-timer
Rollback Process State = In progress
Configured Rollback Time = 00:45:00
Automatic Rollback Time = 00:35:48
Switch# issu acceptversion 6 bootflash:new_image.bin
% Rollback timer stopped. Please issue the commitversion command.
Switch# show issu rollback-timer
Rollback Process State = Not in progress
Configured Rollback Time = 00:45:00
Loading New Cisco IOS XE Software on the New Standby Supervisor Engine
This task explains how to load new version of Cisco IOS XE software to the new standby supervisor
engine.
Perform the following steps at the active supervisor engine:
Command or Action Purpose
Step 1
Switch> enable
Enables privileged EXEC mode.
Enter your password if prompted.
Step 2
Switch# issu acceptversion [ active-slot ]
[ active-image-new ]]
Halts the rollback timer and ensures the new Cisco IOS XE
ISSU process is not automatically aborted during the ISSU
process.
Enter the issu acceptversion command within the time
period specified by the rollback timer to acknowledge that
the supervisor engine has achieved connectivity to the
outside world; otherwise, the ISSU process is terminated,
when the rollback timer expires, and the system reverts to
the previous version of Cisco IOS XE software by switching
to the standby supervisor engine.
Step 3
Switch# show issu rollback-timer
Displays the amount of time left before an automatic
rollback will occur.
Command or Action Purpose
Step 1
Switch> enable
Enables privileged EXEC mode.
Enter your password if prompted.
Step 2
Switch# issu commitversion [ standby-slot ]
[ standby-image-new ]
Allows the new Cisco IOS XE software image to be loaded
into the standby supervisor engine.