What I'm not sure though it whether it reflects the TOS into top-most label or 
all the labels in the stack by default -equivalence of the set mpls imposition 
cmd

If it does the top-most only by default -than you'd need to carry the top-most 
label markings form inbound do outbound interface on the PHP node 
And I found out that is not possible on 7200 running the 12.2.33 SR codes
-as you can't do: exp to qos-group - qos-group to exp

adam

-----Original Message-----
From: [email protected] 
[mailto:[email protected]] On Behalf Of ar
Sent: Monday, September 19, 2011 11:35 AM
To: [email protected]; [email protected]
Subject: Re: [c-nsp] 7200 DSCP-to-EXP Mapping

Thanks. I dont want to apply policy on all ingress interface of the PE to 
remark traffic. That's why I want to be sure on this TOS reflection..

If this is the case, is it safe enough to just do a policy-map on theĀ  PE-to-P 
interface matching for the reflected EXP bits?



--- On Mon, 9/19/11, Mark Tinka <[email protected]> wrote:

From: Mark Tinka <[email protected]>
Subject: Re: [c-nsp] 7200 DSCP-to-EXP Mapping
To: [email protected]
Cc: "Tony" <[email protected]>, "ar" <[email protected]>
Date: Monday, September 19, 2011, 12:26 AM

On Friday, September 16, 2011 12:29:53 PM Tony wrote:

> My understanding is that the 3 bits of the IP precedence
> field are copied to the EXP as part of the MPLS
> encapsulation. This is not platform (or even vendor)
> specific.

I can confirm that.

Always best to mark your ingress packets with the right EXP 
value if you don't want surprises when queuing and 
scheduling happens upstream.

Mark.
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