From: Weidong Xiao (Weidong.Xiao@vi.net)
Date: Mon Feb 24 2003 - 11:33:23 GMT-3
Thanks.
"sh ip bgp flap-statistics" shows nothing. bgp connection is pretty stable. I used bongon BGP template as well. The interface didn't flap. The high cpu usuage happened when income traffic suddenly increased. Logs show most of the traffic go to the target.
br1.rtr#sh ver
Cisco Internetwork Operating System Software
IOS (tm) MSFC2 Software (C6MSFC2-IS-M), Version 12.1(2)E, EARLY DEPLOYMENT RELEASE SOFTWARE (fc
1)
br1.rtr#sh run
...
interface Null0
no ip unreachables
...
> -----Original Message-----
> From: Nawaz, Ajaz [mailto:Ajaz.Nawaz@bskyb.com]
> Sent: 24 February 2003 11:24
> To: 'Tony Huang'; Weidong Xiao; ccielab@groupstudy.com
> Subject: RE: cpu usuage high
>
>
>
> 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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