Specifications

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.3.0XO(15.1(1)XO)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
issu acceptversion
issu acceptver sion
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 ac ceptv ersi on command.
issu acceptversion active-slot [active-image-new]
Syntax Description
Defaults Rollb ack timer resets automatically 45 minutes after you enter the issu runversion command.
Command Modes Privileged EXE C mode
Usage Guidelines A fter 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 runvers ion
command is entered, the entire ISSU process is automatically r olled back to the previous version of the
software. The rollback timer starts immediately after yo u enter the issu runversion command.
If the rollback timer expires befo re the standby supervisor e ngine goes to a hot standby state , the timer
is automatically exte nded by up to 15 min utes. If the standby st ate goes to a hot-st andby state within thi s
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 stan dby
supervisor engine goes into the h ot standby state in 7 minut es, you have 38 minutes ( 45 minus 7 ) to r oll
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#
Related Commands
active-slot Specifies the slot number for the currently active superviso r engine.
active-image-new (Optional) Name of the new image on the currently active supervisor engine.
Command Description
issu abortversion Cancels the ISSU upgrade or the dow ngrade process in
progress and restores the switch to its state before the start
of the process.
issu commitversion Loads the new Cisco IOS software image into the new
standby supervisor engine .
issu loadversion Starts the ISSU process.