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CSCsu33066 - Backup interface commandand39;s functionality is not getting activated

I believe I have stumbled across this bug in IOS 15.2(3)T.

CISCO1941/K9

c1900-universalk9-mz.SPA.152-3.T.bin

I have 2 sites on this code that exhibit the same issue.

interface Serial0/0/0

backup delay 15 30

backup interface Cellular0/1/0


When I remove the backup config and re-add it the cellular interface will stay up. I reloaded the router and the cellular interface would not go into backup. After I bounced the serial interface, it finally did go into standby.

I have 2 routers running this same version of IOS and the same setup. They both exhibited the same issues...

I have 2 other routers running 15.2(1)T1.

I ran all the same tests on there, and that IOS worked with no problems.

CISCO1941/K9

c1900-universalk9-mz.SPA.152-1.T1.bin

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Cisco Employee

CSCsu33066 - Backup interface commandand39;s functionality is no

This bug was found in test, and is therefore a lower priority than a customer experienced bug.  Please open a TAC case and get your case asociated with the bug, this will help appropriately prioritize the code fix.

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