From: Salau, Yemi (yemi.salau@siemens.com)
Date: Mon Feb 11 2008 - 07:36:50 ARST
Hello Pat,
Without the Codec connection, you see few traffic going into the
class-default, the multicast traffic - ospf, hsrp and stuff etc.
But with the Codec connection, you see massive traffic going into the
CodecA class almost at the same rate as it goes into the class-default,
so was able to see that there is some sort of spillage or brigding btw
the 2 class. Note: CodecA class was built using source ip of the Codec
Unit.
This was the information off the show policy-map int fa0/0 (fa0/0 being
the output interface where the policy-map was applied)
Many Thanks
Yemi Salau
-----Original Message-----
From: Patrick Galligan [mailto:pgalligan@gmail.com]
Sent: Saturday, February 09, 2008 11:27 AM
To: Salau, Yemi
Subject: Re: Wierd Class-Map Spillage
Hi Yemi, how have you determined that traffic is getting spilled into
class-default?
On Feb 9, 2008 5:07 AM, Salau, Yemi <yemi.salau@siemens.com> wrote:
> Hello Chaps,
>
> Has anyone come across situations where traffic gets spilled into
> class-map class-default?
>
> I have 2 class-maps ... Class-map CodecA matching traffic from a
> particular host, the other is the class-default class-map.
>
> Then a Policy-map with priority set up for the CodecA class-map and
then
> fair-queing for the class-default.
>
> After series of testing, I discovered that my golden cisco box is
> spilling some of the codecA traffic into the class-default which are
> hence subjected to delay during congestion.
>
> Just wondering if anyone has good pointers for me, because my head is
> about to burst off my neck now as I've had by far, the most troubled
> week of my 2008! I've hardly slept, so maybe I'm missing something.
>
> Another thing worth noting is there is GRE-IPSec tunnel between the 2
> Routers, and "qos pre-classification" has been dealt with in line to
> Cisco best practise of implementing QoS+VPN (I used qos pre-classify
> command on the crypto-map and also the tunnel interface, since I'm
doing
> ecryption and tunneling at the same time, service policy applied
> outbound on Router's "WAN" facing interface)
>
> !
> class-map match-any CodecA
> match access-group name fromServerA
> !
> policy-map Codec
> class CodecA
> priority 1000
> class class-default
> fair-queue
> !
>
> ANY HELP WILL DO BEFORE I GO NUTS!
>
> Many Thanks
>
>Yemi Salau
>
>
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