Switching To The Standby Supervisor Engine - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 8 Configuring the Cisco IOS XE In Service Software Upgrade Process
Switch
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Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Wed 12-Oct-16 02:37 by pro
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Switch
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Sun 06-Nov-16 13:49 by pr

Switching to the Standby Supervisor Engine

This task describes how to switchover to the standby supervisor engine, which is running the new
Cisco IOS XE software image. Perform the following steps at the active supervisor engine.
Command or Action
Step 1
Switch> enable
Step 2
Switch# issu runversion [standby-slot]
[standby-image-new]]
Step 3
Switch# show issu state [detail]
Step 4
Switch# show redundancy [states]
This example shows how to cause a switchover to the former standby supervisor engine (slot 6), reset
the former active supervisor engine and reload it with the old IOS XE software image so it becomes the
standby supervisor engine:
Switch> enable
Switch# issu runversion 6 slavebootflash:new_image
%issu runversion initiated successfully
A switchover happens at this point. At the new active supervisor engine, do the following after old active
supervisor engine comes up as standby.
Switch# show issu state detail
Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3
Software (cat4500e-UNIVERSALK9-M), Version 03.06.05a.E RELEASE SOFTWARE (fc1)
BOOT = bootflash:old_image.bin,12;
Configuration register = 0x2102
Standby Location = slot 6
Current Software state = STANDBY HOT
Uptime in current state = 4 minutes
Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 4500 L3
Software (cat4500e-UNIVERSALK9-M), Version 03.08.03.E RELEASE SOFTWARE (fc2)
BOOT = bootflash:old_image.bin,12;
Configuration register = 0x2102
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Purpose
Enables privileged EXEC mode.
Enter your password if prompted.
Forces a switchover from the active to the standby
supervisor engine and reloads the former active (current
standby) supervisor engines with the old IOS XE image.
When you enter the issu runversion command, an SSO
switchover will be performed, and NSF procedures will be
invoked if so configured.
Displays the state of the during the ISSU process. At this
point in the ISSU process, use this command to check that
a switchover occurs to slot 6.
Displays redundancy facility state information.
Slot = 6
How to Perform the ISSU Process
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