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New Member

3550 CPU 99% utilization

Our edge switch's cpu utilization has been almost 99% since yesterday.

But, whenever I command "sh proc cpu | exclude 0.0 ",

like below(it is so strange)

my3524#sh processes cpu | exclude 0.0

CPU utilization for five seconds: 99%/96%; one minute: 99%; five minutes: 99%

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

24 116069856 85488395 1357 0.24% 0.41% 0.38% 0 Vegas Statistics

35 35409652 177121338 199 0.32% 0.27% 0.26% 0 IP Input

My first action was packet filtering with ACL for blaster Warm

(because I did netflow command and I catched a lot of 92byte icmp scanning packets)

But now still cpu util are about 99%.

New Member

Re: 3550 CPU 99% utilization


Can you post your complete sh proc cpu | exclude 0.00% output... My first guest is that we don't have to dig to deep on this issue, the high cpu is probably due to traffic overflow. You can find out with "sh controller switch"

Check this link for more info

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