Cisco Catalyst 4500 Series Software Configuration Manual page 430

How to Perform the ISSU Process
Switch> enable
Switch# show issu state detail
switch#sh redundancy
Redundant System Information :
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Switchovers system experienced = 1
Configured Redundancy Mode = Stateful Switchover
Operating Redundancy Mode = Stateful Switchover
Current Processor Information :
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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 prod
Peer Processor Information :
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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
Switch# issu changeversion bootflash:y.bin
% 'issu changeversion' is now executing 'issu loadversion'
% issu loadversion executed successfully, Standby is being reloaded
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
8-32
RP State = Active
ISSU State = Init
Operating Mode = Stateful Switchover
Current Image = bootflash:x.bin
Pre-ISSU (Original) Image = N/A
Post-ISSU (Targeted) Image = N/A
RP State = Standby
ISSU State = Init
Operating Mode = Stateful Switchover
Current Image = bootflash:x.bin
Pre-ISSU (Original) Image = N/A
Post-ISSU (Targeted) Image = N/A
Available system uptime = 10 hours, 58 minutes
Standby failures = 1
Last switchover reason = user_forced
Hardware Mode = Duplex
Maintenance Mode = Disabled
Communications = Up
Active Location = slot 6
Current Software state = ACTIVE
Uptime in current state = 31 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:new_image.bin,12;bootflash:old_image.bin,12;
Configuration register = 0x2102
Standby Location = slot 5
Current Software state = STANDBY HOT
Uptime in current state = 3 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:new_image.bin,12;bootflash:old_image.bin,12;
Configuration register = 0x2102
Chapter 8 Configuring the Cisco IOS XE In Service Software Upgrade Process
Slot = 5
Slot = 6