[cisco-bba] CoS PPPoE problem

[Andrew Snowdon]

Hi,

I've upgraded to 12.4 and now it's allowing me to apply the service policy
to the virtual template, how ever when checking with wireshark it's not
marking the packets correctly the CoS field is always 0 (Also the packets
marked counter is not increasing). The link you posted above is to do with
PPPoE control packets only. Is it possible to get Cisco IOS to mark HTTP
packets with one CoS value and VoIP with another, ect not just the control
packets set to 7. 

Kindest Regards,

Andrew

-----Original Message-----
From: cisco-bba-bounces at puck.nether.net
[mailto:cisco-bba-bounces at puck.nether.net] On Behalf Of Tassos
Chatzithomaoglou
Sent: 09 October 2008 17:49
To: cisco-bba at puck.nether.net
Subject: Re: [cisco-bba] CoS PPPoE problem

Andrew, we're using 12.2(31)SB12 and it is working there.

Have a look at the following page:
http://www.cisco.com/en/US/docs/ios/12_2sb/feature/guide/sb8021p2.html

-- 
Tassos

Andrew Snowdon wrote on 07/11/2008 11:48:
> Hi,
> 
>  
> 
> This is my first post so forgive me if it?s in the wrong place.
> 
>  
> 
> I am having an identical problem to this thread 
> http://gossamer-threads.com/lists/cisco/bba/55782#55782. I?ve spent 
> weeks trying to find a solution to this problem and that post is the 
> closest I?ve seen any one come. For the CoS bit to be set for each PPPoE 
> virtual access interface it must be done in the virtual template but 
> this is not allowed as the interface must be a dot1q interface. You 
> cannot use encapsulation dot1Q on a virtual template so there in lays my 
> problem. I?ve enforced a policy map on the virtual template that sets 
> the DSCP field of the IP header and it works fine. This however is of no 
> use to me because we are using PPPoE the extra PPP header between the 
> mac and IP header blinds all of our network devices to the DSCP field 
> and makes it useless. The only way for me to possibly get any type of 
> QoS working on our network will be to use the 802.1p CoS field which is 
> further down the stack. The last post to the thread mentioned above says 
> it works with a newer IOS (I?m running 12.2(16)on a 7301). Is that true? 
> I?m not sure as there are no follow ups. I?m beginning to think that 
> what I want to do is impossible. Surly I?m not the only person to have 
> this problem as PPPoE is a proven technology and used by millions of 
> people every day and I?m sure I?m not the first person ever to try and 
> enforce QoS on a PPPoE network. Any input at all any one has would be of 
> great help and be much appreciated.
> 
>  
> 
> Kindest Regards,
> 
>  
> 
> Andrew
> 
> 
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> 18/09/2008 17:03
> 
> 
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