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

Chapter 6 Configuring the Cisco IOS XE In Service Software Upgrade Process
client count = 64
client_notification_TMR = 240000 milliseconds

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
OL-25340-01
keep_alive TMR = 9000 milliseconds
keep_alive count = 1
keep_alive threshold = 18
RF debug mask = 0
ISSU State = Run Version
Operating Mode = Stateful Switchover
Current Image = bootflash:new_image
Pre-ISSU (Original) Image = bootflash:old_image
Post-ISSU (Targeted) Image = bootflash:new_image
ISSU State = Run Version
Operating Mode = Stateful Switchover
Current Image = bootflash:old_image
Pre-ISSU (Original) Image = bootflash:old_image
Post-ISSU (Targeted) Image = bootflash:new_image
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
RP State = Active
Slot = 5
RP State = Standby
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
How to Perform the ISSU Process
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