Cisco Catalyst 4500 Series Command Reference Guide

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
issu acceptversion
issu acceptversion
To halt the rollback timer and to ensure that the new Cisco IOS software image is not automatically
stopped during the ISSU process, use the issu acceptversion command.
issu acceptversion active-slot [active-image-new]
Syntax Description
Defaults Rollback timer resets automatically 45 minutes after you enter the issu runversion command.
Command Modes Privileged EXEC mode
Command History
Usage Guidelines After you are satisfied with the new image and have confirmed the new supervisor engine is reachable
by both the console and the network, enter the issu acceptversion command to halt the rollback timer.
If the issu acceptversion command is not entered within 45 minutes from the time the issu runversion
command is entered, the entire ISSU process is automatically rolled back to the previous version of the
software. The rollback timer starts immediately after you enter the issu runversion command.
If the rollback timer expires before the standby supervisor engine goes to a hot standby state, the timer
is automatically extended by up to 15 minutes. If the standby state goes to a hot-standby state within this
extension time or the 15 minute extension expires, the switch aborts the ISSU process. A warning
message that requires your intervention is displayed every 1 minute of the timer extension.
If the rollback timer is set to a long period of time, such as the default of 45 minutes, and the standby
supervisor engine goes into the hot standby state in 7 minutes, you have 38 minutes (45 minus 7) to roll
back if necessary.
Use the issu set rollback-timer to configure the rollback timer.
Examples This example shows how to halt the rollback timer and allow the ISSU process to continue:
Switch# issu acceptversion 2
Switch#
active-slot Specifies the slot number for the currently active supervisor engine.
active-image-new (Optional) Name of the new image on the currently active supervisor engine.
Release Modification
12.2(31)SGA This command was introduced on the Catalyst 4500 series switch.

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