[c-nsp] A question about implementing CoS on GSR12012

[Oliver Boehmer (oboehmer)]

David,

> I've a question about implementing CoS on GSR12012 using the 3 Port GE
> linecards (engine 2), that I'm wondering if anybody has some insight
> over. 
> 
> I'd like to use the newer MQC (service-policy) to deal with this,
> rather than the older "tx-cos/rx-cos" format.
> 
> The main problem is that we'll be using MPLS EXP bits purely for
> classification, there are no plain IP packets floating around that we
> are bothered about.
> 
> According to the docs on MQC for GSR
> (http://www.cisco.com/warp/public/63/mqc.html)
> matching of MPLS EXP is not possible on E2 linecards,
> 
> 1. does anybody have any ideas as to how I can do this on this
> linecard? 
> 2. does it need to be done in software?
> 3. does anybody have an example for an E2 GE linecard
> (preferably something with WRED!)

"match ip precedence <n>" will also match labelled packets with exp-bits
<n> on this engine (and on engine0 for that matter), so just configure
your class-maps pretending you'll be switching ip packets..

	oli