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

[Rudy Setiawan]

Thanks Pavel and Gert.

I'm hoping to get in touch with the vendor on Monday and try to get a
DFC3BXL sent over.

True, I did not see anything in the log that said about tcam stuff. On our
border1, it did show that since I was using a sup2 engine and receiving a
full routing table + private peerings. the cpu on border1 was around 30% on
the average.

Jun 19 20:33:08.311 PDT: %MLSCEF-SP-7-FIB_EXCEPTION: FIB TCAM exception for
IPv4 unicast, Some routes will be software switched.
Use "mls cef maximum-routes" to modify FIB TCAM  partition.

Thanks,
Rudy

On Mon, Jun 28, 2010 at 2:56 AM, Pavel Skovajsa <pavel.skovajsa at gmail.com>wrote:

> 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
>> --
>> USENET is *not* the non-clickable part of WWW!
>>                                                           //
>> www.muc.de/~gert/ <http://www.muc.de/%7Egert/>
>> Gert Doering - Munich, Germany
>> gert at greenie.muc.de
>> fax: +49-89-35655025
>> gert at net.informatik.tu-muenchen.de
>>
>
>