Weird CPU Utilization every 24 hours 4503-E

[Amro BaniHani]

Dear All,

Could you please help in this issue, the cpu utilization of the switch spikes to 100% every 24 hours, luckily it is not crashing or hanging but I'm bit confused

             1                       1                       1

    1111111110215111111111111111111110122111111111111111121110111111111111

    3112400100522216101116111151111110003111111111112212191610219100003111

100          *                       *                       *

90          *                       *                       *

80          *                       *                       *

70          *                       *                       *

60          *                       *                       *

50          *  *                    *                       *

40          *  *                    *                       *

30          ** *                    *                   *   *

20          ** *  *     *    *      * **                * * *  *

10 ######################################################################

   0....5....1....1....2....2....3....3....4....4....5....5....6....6....7.

             0    5    0    5    0    5    0    5    0    5    0    5    0

                   CPU% per hour (last 72 hours)

                  * = maximum CPU%   # = average CPU%

Regards,

Amro

[paul driver]

Hello

What switching method is enabled? - process/fast/cef?

Are all you trunks carring unwarrented vlan traffic? -

Can you post :

sh interfaces stats

sh interfaces switching

sh process cpu sorted
sh process memory sorted

sh in trunk

res

Paul

Please don't forget to rate any posts that have been helpful.

Thanks.

[Lei Tian]

Hi,

Probably some network management system is pulling, or doing daily configuration saving. If it doesn't impact any performance, I wouldn't worry too much about the spike. If you want find out what process is causing the spike, the best way is to run EEM script to capture the output of show process CPU when CPU spike.

HTH,
Lei Tian

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