From: Nawaz, Ajaz (Ajaz.Nawaz@bskyb.com)
Date: Mon Feb 24 2003 - 08:24:04 GMT-3
This has nothing to do with Spantree whatsover - the issues higlighted are
related to router processes pointed out by Weidong Xiao below. They are IP
Input and BGP Scanner.
There is not enough information to say exactly what may be causing this but
it could be a bug or something like BGP flap. We need to see output from
show ver and config too for starters. If you see it again use show ip bgp
flap-statistics. Does the high CPU follow an interface flap ?
ajaz
-----Original Message-----
From: Tony Huang [mailto:tonyh5@hotmail.com]
Sent: 24 February 2003 02:00
To: Weidong Xiao; ccielab@groupstudy.com
Subject: Re: cpu usuage high
Hi,
I think the frequent change of networkk status could cause the high cup
usage because the switch needs to run spantree times. By issuing sh spantree
statistics, you should be able to see which port has incured the change. You
can find this by looking at the column: topology change last recvd. from.
From there, you can keep tracing the source of problems.
Hope it helps,
Cheers,
Tony
----- Original Message -----
From: "Weidong Xiao" <Weidong.Xiao@vi.net>
To: <ccielab@groupstudy.com>
Sent: Monday, February 24, 2003 9:34 AM
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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