Manual

Cisco IOS In Service Software Upgrade Process

How to Perform the ISSU Process

Cisco IOS Release 12.2(28)SB

• Run version (RV) state—The issu runversion command forces the switchover of the RPs. The

newly active RP now runs the new Cisco IOS software image.

You can verify the ISSU software installation by entering show commands that provide information on

the state of the during the ISSU process.

SUMMARY STEPS

1. enable

2. show issu state [detail]

DETAILED STEPS

Enabling the New Standby RP to Use New Cisco IOS Software Version

After loading new Cisco IOS software to the standby RP, causing the standby RP to become the active

RP and the former active RP to become the standby RP, you need to enable the new standby RP to use

the new Cisco IOS software version. This task explains how to perform that process.

SUMMARY STEPS

1. enable

2. issu commitversion slot active-image

Command or Action Purpose

Step 1

enable

Example:

Router> enable

Enables privileged EXEC mode.

• Enter your password if prompted.

Step 2

show issu state [detail]

Example:

Router# show issu state

Displays the state of the during the ISSU process.

Step 3

show redundancy [clients | counters | debug-log

| handover | history | states | inter-device]

Example:

Router# show redundancy

Displays current or historical status, mode, and related

redundancy information about the device.