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

Performing the ISSU Process
client count = 39
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 software image.
Perform this task 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 2), reset
the former active supervisor engine and reload it with the old image so it becomes the standby supervisor
engine:
Switch> enable
Switch# issu runversion 2 slavebootflash:new_image
This command will reload the Active unit.
A switchover occurs at this point. At the new active supervisor engine, after old active supervisor engine
comes up as the standby engine, do the following:
Switch# show issu state detail
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.0E and IOS 15.2(5)E
7-24
keep_alive TMR = 9000 milliseconds
keep_alive count = 1
keep_alive threshold = 18
RF debug mask = 0x0
Slot = 2
RP State = Active
ISSU State = Run Version
Boot Variable = bootflash:new_image,12;bootflash:old_image,12
Operating Mode = Stateful Switchover
Primary Version = bootflash:new_image
Secondary Version = bootflash:old_image
Current Version = bootflash:new_image
Slot = 1
RP State = Standby
ISSU State = Run Version
Chapter 7 Configuring the Cisco IOS In-Service Software Upgrade Process
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 image.
When you enter the issu runversion command, an SSO
switchover is performed, and NSF procedures are invoked if
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 2.
Displays redundancy facility state information.
Proceed ? [confirm]