Cisco Catalyst 4500 Series Command Reference Guide

2-385
Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
OL-27596 -01
Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
issu loadversion
issu loadversion
To start the ISSU process, use the issu loadversion command.
issu loadversion active-slot active-image-new standby-slot standby-image-new [force]
Syntax Description
Defaults This command has no default settings.
Command Modes Privileged EXEC mode
Command History
Usage Guidelines The issu loadversion command causes the standby supervisor engine to be reset and booted with the
new Cisco IOS software image specified by the command. If both the old image and the new image are
ISSU capable, ISSU compatible, and have no configuration mismatches, the standby supervisor engine
moves into Stateful Switchover (SSO) mode, and both supervisor engines move into the load version
(LV) state.
It will take several seconds after the issu loadversion command is entered for Cisco IOS software to
load onto the standby supervisor engine and the standby supervisor engine to transition to SSO mode.
Examples This example shows how to initiate the ISSU process:
Switch# issu loadversion 1 bootflash:new-image 2 slavebootflash:new-image
Switch#
Related Commands
active-slot Specifies the slot number for the currently active supervisor engine.
active-image-new Specifies the name of the new image on the currently active supervisor engine.
standby-slot Specifies the standby slot on the networking device.
standby-image-new Specifies the name of the new image on the standby supervisor engine.
force (Optional) Overrides the automatic rollback when the new Cisco IOS software
version is detected to be incompatible.
Release Modification
12.2(31)SGA This command was introduced on the Catalyst 4500 series switch.
Command Description
issu abortversion Cancels the ISSU upgrade or the downgrade process in
progress and restores the switch to its state before the start
of the process.
issu acceptversion Halts the rollback timer and ensures that the new Cisco IOS
software image is not automatically stopped during the
ISSU process.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E