Loading New Cisco Ios Software On The Standby Supervisor Engine - Cisco Catalyst 4500 Series Configuration Manual

Performing the ISSU Process
The new version of the Cisco IOS software must be present on both of the supervisor engines. The
directory information displayed for each of the supervisor engines (or supervisor engines) shows that the
new version is present.
Switch# dir bootflash:
Directory of bootflash:/
61341696 bytes total (1111388 bytes free)
Switch# dir slavebootflash:
Directory of slavebootflash:/
61341696 bytes total (1116224 bytes free)

Loading New Cisco IOS Software on the Standby Supervisor Engine

This task describes how to use ISSU to load a new version of Cisco IOS software to the standby
supervisor engine.
Prerequisites
•
Note
Note
•
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
5-18
ISSU State = Init
Boot Variable = bootflash:old_image,1;
Operating Mode = Stateful Switchover
Primary Version = N/A
Secondary Version = N/A
Current Version = bootflash:old_image
Slot = 2
RP State = Standby
ISSU State = Init
Boot Variable = bootflash:old_image,1;
Operating Mode = Stateful Switchover
Primary Version = N/A
Secondary Version = N/A
Current Version = bootflash:old_image
5 -rwx 13636500 Sep 6 2006 09:32:33 +00:00
6 -rwx 13636500 Sep 6 2006 09:34:07 +00:00
4 -rwx 13636500 Sep 6 2006 09:40:10 +00:00
5 -rwx 13636500 Sep 6 2006 09:42:13 +00:00
Ensure that the new version of Cisco IOS software image is already present in the file system of both
the active and standby supervisor engines. Also ensure that appropriate boot parameters (BOOT
string and config-register) are set for the standby supervisor engine.
The switch must boot with the BOOT string setting before the ISSU procedure is attempted.
auto-boot must be enabled for ISSU to succeed.
Optionally, perform additional tests and commands to determine the current state of peers and
interfaces for later comparison.
Chapter 5 Configuring the Cisco IOS In-Service Software Upgrade Process
old_image
new_image
old_image
new_image
OL-25340-01