Cisco Catalyst 4500 Series, Software Configuration Manual

Page: 382 / 2086

7-26
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.0E and IOS 15.2(5)E
Chapter 7 Configuring the Cisco IOS In-Service Software Upgrade Process
Performing the ISSU Process
Peer Processor Information :
----------------------------
Standby Location = slot 1
Current Software state = STANDBY HOT
Uptime in current state = 4 minutes
Image Version = Cisco IOS Software, Catalyst 4500 L3 Switch Software
(cat4500-ENTSERVICES-M), Version 12.2(31)SGA, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Tue 05-Sep-06 16:16 by sanjdas
BOOT = bootflash:old_image,12
Configuration register = 0x822
Stopping the ISSU Rollback Timer (Optional)
This optional task describes how to stop the rollback timer.
If you do not run the following procedure before the rollback timer “timeout,” the system automatically
aborts the ISSU process and reverts to the original Cisco IOS software version. By default the rollback
timer is 45 minutes.
Use the following information to decide what action you should take:
•
If you want to retain your switch in this state for an extended period, you need to stop the rollback
timer (then validate and run the
acceptversion command directly).
• If you want to proceed to the following step (running “commitversion”) within the rollback timer
window of 45 minutes, you do not need to stop the rollback timer.
Note
The issu acceptversion command can be optionally executed after the issu runversion command.
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 occurs.
Switch> enable
Switch# show issu rollback-timer
Rollback Process State = In progress
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
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,
and the system reverts to the previous version of Cisco IOS
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 occurs.