From: Chuck Church (ccie8776@rochester.rr.com)
Date: Sun Feb 23 2003 - 21:44:55 GMT-3
It's IP traffic going through the router. But there can be many reasons why
the utilization is high. Some of those are:
Access lists
NAT
a DOS occurring
a poor configuration - disabled route-cache, etc
Older IOS version which doesn't support fast switching of certain traffic
types.
Here's a pretty good doc on it:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_tech_note091
86a00800a70f2.shtml
Chuck Church
CCIE #8776, MCNE, MCSE
----- Original Message -----
From: "Weidong Xiao" <Weidong.Xiao@vi.net>
To: <ccielab@groupstudy.com>
Sent: Sunday, February 23, 2003 5:34 PM
Subject: cpu usuage high
> Hi Group,
>
> A cat6509 is receiving about 30Mb/s traffic from the Internet. Normally
the cpu usuage is under 10%. But for the last couple of hours it's like
below. I am wondering what kind of traffic can be so 'powerful', and what
does pid 19 (see below) mean. Can anyone shed some light?
>
> Thanks very much,
> Weidong
>
>
> br1.rtr#sh proc cpu
> CPU utilization for five seconds: 48%/32%; one minute: 64%; five minutes:
65%
> PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
> ....
> 19 42728104 184864569 231 16.54% 19.07% 19.36% 0 IP Input
> ....
> 66 175270476 1282394 136677 0.00% 1.39% 1.94% 0 BGP Scanner
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