Manual

Cisco IOS In Service Software Upgrade Process

How to Perform the ISSU Process

Cisco IOS Release 12.2(28)SB

The new version of the Cisco IOS software must be present on both of the RPs. The directory information

displayed for each of the RPs (or RPs) shows that the new version is present.

Router# directory disk0:

Directory of disk0:/

1 -rw- 16864340 Jul 16 2004 01:59:42 -04:00 c10k2-p11-mz.122-16.BX1.bin

2 -rw- 2530912 Jul 16 2004 02:00:04 -04:00 c10k2-eboot-mz.122-16.BX1.bin

3 -rw- 20172208 Aug 30 2004 16:25:56 -04:00 c10k2-p11-mz.1.20040830

4 -rw- 20171492 Aug 31 2004 12:25:34 -04:00 c10k2-p11-mz.2.20040830

64253952 bytes total (4509696 bytes free)

Router# directory stby-disk0:

Directory of stby-disk0:/

1 -rw- 16864340 Jul 16 2004 09:00:26 -04:00 c10k2-p11-mz.122-16.BX1.bin

2 -rw- 2530912 Jul 16 2004 09:00:46 -04:00 c10k2-eboot-mz.122-16.BX1.bin

3 -rw- 20172208 Aug 30 2004 16:28:44 -04:00 c10k2-p11-mz.1.20040830

4 -rw- 20171492 Aug 31 2004 12:30:20 -04:00 c10k2-p11-mz.2.20040830

64253952 bytes total (4509696 bytes free)

Performing the ISSU Process: Example

The following examples explain how to verify the ISSU software installation by entering show

commands that provide information on the state of the during the ISSU process.

Initiating the ISSU Process: Example

To initiate the ISSU process, enter the issu loadversion command as shown in the following example:

Router# issu loadversion a disk0:c10k2-p11-mz.2.20040830 b

stby-disk0:c10k2-p11-mz.2.20040830

The following two examples display the ISSU state and redundancy state after ISSU process initiation:

Router# show issu state

Slot = A

RP State = Active

ISSU State = Load Version

Boot Variable = disk0:c10k2-p11-mz.1.20040830,1;

Slot = B

RP State = Standby

ISSU State = Load Version

Boot Variable =

disk0:c10k2-p11-mz.2.20040830,12;disk0:c10k2-p11-mz.1.20040830,1;

Router# show redundancy state

my state = 13 -ACTIVE

peer state = 8 -STANDBY HOT

Mode = Duplex

Unit = Primary

Unit ID = 0