high cpu utilization on 4506

Unanswered Question
Jul 1st, 2008
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Hi,



The CPU load of our Catalyst4506 increases steadily in past days, and it is

observed CPU load get as high as 98% some time. 'show proc cpu' shows

something like:


PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process


153864 17871130 8 0.00% 0.00% 0.00% 0 Per-Second

Jobs


12599429843831335909 328 6.63% 6.91% 6.75% 0 Cat4k Mgmt HiPri


3269298281067594379 306 32.93% 32.68% 32.55% 0 Cat4k Mgmt LoPri


749292 70964735 10 0.08% 0.00% 0.00% 0 Galios Reschedul


plz advice me


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cisco_lad2004 Tue, 07/01/2008 - 05:24
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if it has increased past days, you shoudl hopefully be able to identify what changes have triggered this.

Not knowing the configuration of ur 4506, I will give generic pointers.


1-check for increase in traffic.

2-check for increase in TCAM entries.

3-check for increase in security filters such as DAI.


Ultimately, u can always SPAN cpu traffic and analyse it.


HTH


Sam

purohit_810 Tue, 07/01/2008 - 05:29
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You can follow this Link:


http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a00800a70f2.shtml#show_process_cpu


Bust best way to Mirror your switch interface or Vlan Interface and put sniffer.


You will have better idea, from where high traffic follows. You can stop the host and bring it down utilization.


Thanks,

Dharmesh Purohit

ahmad82pkn Thu, 01/15/2009 - 08:38
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are you able to fix this? i am having the same issue:(

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