Verifying The Issu Software Installation - Cisco Catalyst 4500 Series Configuration Manual

Performing the ISSU Process

Verifying the ISSU Software Installation

During the ISSU process, five valid states exist: disabled, init, load version, run version, and system
reset. Use the show issu state command to obtain the current ISSU state:
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You can verify the ISSU software installation by entering show commands, as follows:
Command or Action
Step 1
Switch> enable
Step 2
Switch# show issu state [detail]
Step 3
Switch# show redundancy
This example shows how to display the state and the current status of the supervisor engine during the
ISSU process:
Switch> enable
Switch# show issu state
Switch# show redundancy
Verifying Redundancy Mode Before Beginning the ISSU Process
Before you begin the ISSU process, verify the redundancy mode for the system and be sure to configure
NSF and SSO.
The following example displays verification that the system is in SSO mode, that slot 1 is the active
supervisor engine, and that slot 2 is the standby supervisor engine. Both supervisor engines are running
the same Cisco IOS software image.
Switch# show redundancy states
Redundancy Mode (Operational) = Stateful Switchover
Redundancy Mode (Configured)
Redundancy State
Software Configuration Guide—Release IOS XE 3.3.0SG and IOS 15.1(1)SG
5-16
Disabled state—The state for the standby supervisor engine while this engine is resetting.
Init state—The initial state is two supervisor engines, one active and one standby, before the ISSU
process is started. It is also the final state after the ISSU process completes.
Load version (LV) state—The standby supervisor engine is loaded with the new version of Cisco
IOS software.
Run version (RV) state—The issu runversion command forces the switchover of the supervisor
engines. The newly active supervisor engine now runs the new Cisco IOS software image.
System reset (SR) state—This state occurs either when you enter the issu abortversion command
before the Init state is reached, or if the rollback timer expires before you execute the
issu acceptversion command.
my state = 13 -ACTIVE
peer state = 8 -STANDBY HOT
Mode = Duplex
Unit = Primary
Unit ID = 1
Chapter 5 Configuring the Cisco IOS In-Service Software Upgrade Process
Purpose
Enables privileged EXEC mode.
Enter your password if prompted.
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Displays the state of the during the ISSU process.
Displays current or historical status, mode, and related
redundancy information about the device.
= Stateful Switchover
= Stateful Switchover
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