[c-nsp] 3845 maxing out at 400 Mbps

[Frank Bulk]

The 'sh ip cef switching stats' is unfortunately not supported on my IOS
release.  AFAIK, this is not BU-special software.  I d/l this several years
ago from using CCO account when initially turning these up.

I'd prefer not upgrade unless someone can point me to a specific issue/bug
fix.  

Thanks for your thoughts.

Frank

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Lukasz Bromirski
Sent: Tuesday, March 29, 2011 2:33 AM
To: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] 3845 maxing out at 400 Mbps

On 2011-03-29 04:14, Frank Bulk wrote:
> We have two 3845's as border routers, each with three GigE interfaces (one
> facing upstream, the other downstream, the third facing the other 3845).
> The first 3845 has a typical packet-size mix (residential/business
Internet)
> is consistently maxing out at 400 Mbps (predominately ingress because of
> asymmetric routing) running at about 43 kpps and 40% CPU.  It's flat-lines
> very evenly, uncannily so.  We checked and double-checked transport and
it's
> set much higher, the same as the second 3845.
> The second 3845, which has a mix of both ingress and egress traffic at a
> combined 82 kpps (35 kpps ingress/50 kpps egress) but lower combined 360
> Mbps operates at a higher CPU (presumably because there's also egress
> traffic) with no flatlining.

Are there any CEF drops? Have you checked 'sh ip cef switching stats'?

> The ACLs are BCP 38-oriented with eBGP; no rate-limiting.
 > We're running 124-11.XW2.

Why you're running BU-special software? Some specific feature not
included in normal IOS? Given the relese date of the software,
all the features should be already in the mainline IOS. You
should propably move to 12.4(15)T or 15.0(1)Mx (latest rebuild).

-- 
"There's no sense in being precise when |               Łukasz Bromirski
  you don't know what you're talking     |      jid:lbromirski at jabber.org
  about."               John von Neumann |    http://lukasz.bromirski.net
_______________________________________________
cisco-nsp mailing list  cisco-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/cisco-nsp
archive at http://puck.nether.net/pipermail/cisco-nsp/