2911 router crashes after deactivating night service

Unanswered Question
May 4th, 2012
User Badges:

The router sometime crashes when it change over from day service to night service. After resetting the router, it works fine.

Sent from Cisco Technical Support iPhone App

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (2 ratings)
Luis Gustavo Al... Fri, 05/04/2012 - 16:27
User Badges:

Hello Mohammed,

   what IOS version are you running?

Do you have a crash file in flash?

- Luis

maislam76 Fri, 05/04/2012 - 17:21
User Badges:

C2900 universal k9 m

15.0 (1)m6

Sent from Cisco Technical Support iPad App

Luis Gustavo Al... Fri, 05/04/2012 - 18:03
User Badges:

How ahead and attach both. What we need to find out, is if this is a high CPU or a truly hang where the process runs infinitely and does not relinguish the processor.

Do you still have console access when the router hangs?

If you do then go ahead and do the following:


# term mon

# conf t

# logg mon

# logg con

# no log buff

1. Have a console cable connected to the router and log the output to a txt file.

2. Deactivate the service

3. Collect everything from start to finish till the router comes back.

If the router crashes, then we can collect the following info to find out:


If the router hangs then we can collect stack traces from rommon by following this link:


- Luis A.

maislam76 Sat, 05/05/2012 - 02:18
User Badges:

after crashing I can console in, but no remote log in.

I have taken sh tech after it crashed

maislam76 Sat, 05/05/2012 - 03:03
User Badges:

Hi Luis,

I forgot to say, when it crashes the users can't use the computer or phones.

Thank you for pointing me to right direction.


paolo bevilacqua Sat, 05/05/2012 - 04:13
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    Founding Member

Please update to 15.0(1)M8 or 15.1(4)M4.

Then if still happens you need to contact the TAC, because no forum can resolve IOS bugs.

maislam76 Sat, 05/05/2012 - 04:53
User Badges:

Thank you guys, I will update the IOS, if not resolved then TAC case.

paolo bevilacqua Sat, 05/05/2012 - 06:27
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    Founding Member

Thank you for the nice rating and good luck!

Luis Gustavo Al... Sat, 05/05/2012 - 07:34
User Badges:

Paolo is right trying with the IOS upgrade first.

Thanks for the rating.

Sent from Cisco Technical Support iPhone App


This Discussion