[c-nsp] Speed problem and router seems to sluggish

[Pavel Skovajsa]

Hi Rudi,
Just to expand on Gert's answer.

Your guess is correct - it has everything to do with the fact you have a
DFC3B in a 3BXL system. The moment you installed this card and booted up the
box it failed back to common denominator of the size of the TCAM - nonXL
system. If you have a lot of prefixes -> you have full TCAMs -> rate limiter
towards RP -> CPU switched traffic = low throughput.
In order to fix this, probably the easiest way is to upgrade your DFC on the
10G modules with WS-F6700-DFC3BXL.

One thing that is weird is that you did not notice this is in the logs as
usally when this happens the switch logs interesting messages about TCAM
overflow over and over.

There is a lot of info about the XL vs. non-XL in the C6500 architecture
document over here:
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/prod_white_paper0900aecd80673385.html

<http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/prod_white_paper0900aecd80673385.html>
-pavel

On Sun, Jun 27, 2010 at 7:52 PM, Gert Doering <gert at greenie.muc.de> wrote:

> Hi,
>
> On Mon, Jun 28, 2010 at 12:41:46AM +0700, Rudy Setiawan wrote:
> > Would the low TCAM of 239k (due to DFC3B daughter card) have something to
> do
> > with this weird traffic?
>
> If your router is carrying full Internet routing tables (>330k), most
> definitely.
>
> gert
> --
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> Gert Doering - Munich, Germany
> gert at greenie.muc.de
> fax: +49-89-35655025
> gert at net.informatik.tu-muenchen.de
>