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Cisco Config Change Backout using timer


shadowmac
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Many changes you make could affect your remote connection to the switch so you should utilize a backup plan like the reload delay timer function on Cisco IOS devices.




Reload In x



reload in ?



Delay before reload (mmm or hhh:mm)





r1#reload in 1


Reload scheduled in 1 minute by console


Proceed with reload? 


r1#


***


*** — SHUTDOWN in 0:01:00 —


***







Reload at xx:xx





r1#reload at 10:01


System configuration has been modified. Save? : y

Building configuration…



Reload scheduled for 10:01:00 UTC Sat Feb 21 2012 (in 37 seconds) by console

Proceed with reload?

r1#

Jan 28 10:00:26: %SYS-5-SCHEDULED_RELOAD: Reload requested for 10:01:00 UTC Sat

Feb 21 2012 at 10:00:08 UTC Sat Jan 28 2012 by console.[/code]






So you’ve set the router to reload in 30 minutes while you complete your change. You complete the change successfully. How do you cancel the ticking time-bomb of the impending router reload? Simply enter the “reload cancel†command:



[b]Reload Cancel[/b]




r1#reload cancel

r1#

***

*** — SHUTDOWN ABORTED —

***






Being able to schedule a reload is a great feature and has saved my bacon more than once. The biggest thing to remember is to disable the router reload once you have successfully completed your change. To verify whether there are scheduled reloads, run the “show reload†command:



Show Reload




r1#show reload

Reload scheduled in 4 minutes and 55 seconds by console

Reload reason: Scheduled reload


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