Re: A basic question on Cisco POS interface counter

From: Andy Li (ali@cisco.com)
Date: Wed Aug 23 2000 - 22:16:53 EDT


Yu Ning

  Could you provide us the "sh control frfab queue" from the LC console?
Please also send "sh diag slotXX" for these two QOC3 LCs.

  One other option you can do is to turn on per-packet load-sharing under
interface config. If the same result shows up, we can dive harder to see the
cause.

Best
Andy

----- Original Message -----
From: "Yu Ning" <yuning@ns.chinanet.cn.net>
To: <cisco-nsp@puck.nether.net>
Cc: "Chinanet-vt" <Chinanet-vt@cisco.com>
Sent: Wednesday, August 23, 2000 6:11 PM
Subject: A basic question on Cisco POS interface counter

> Hi All,
>
> We have two parallel POS 155M links, they are heavily loaded, because
> they link up two GSR 12008 in our core. But the counter in one interface
(A)
> is quite strange. It indicates only 90M bps output direction, while at
> its receiver side, it shows 144M bps - I clear their counter at nearly
> the same time to sync them, then after while they are still 90M,144M.
>
> I believe that the interface A should be around 144M, because we have a
> MRTG polling the MIB, and it shows the speed is also around 144M.
> One possible hint is, if checking the "from fabric queue" of interface A,
> we'll find the queue element is not empty- indicate a jam, if it's in that
> situation, the counter goes wrong ?
>
> Note, all the speed is 5min input/output speed shown in the "sh int"
> command.
>
> If we can't trust 5 min speed, what can we believe in this situation?
>
>
> thanks any input!
>
> regards,
>
> ------------------------------------------------------
> (Mr.) Yu(2) Ning(2)
> Int'l/Domestic Routing/Resource Man.
> ChinaNET(AS4134) Backbone Operation Center
> Networking Dep.,Datacom Bureau, China Telecom.
> Beijing,P.R.C +86-10-66418105/66418121/66418123(fax)
> ------------------------------------------------------
>



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