QoS Group

I did some googling and I think I get this, but I want a quick
affirmation so I don't screw up.

If you reckon that you have a P router attached to a PE and you are
assuring link QoS characteristics based on EXP, the EXP will be marked
on ingress at the top-most label.

At the P router attached to the destination PE, by default, an
implicit null will be in the LFIB for egress interface towards the PE.
As a result, to ensure that the EXP is given a proper shape rate, you
have two options:

1) Configure the PE to give an explicit null so the egress shaper on
the P router can utilize the EXP from the ingress frame
2) Utilize QoS groups so the EXP is matched and assigned on ingress to the EXP

Thoughts, suggestions, clarifications. I need that 2nd CCIE!

-- 
William McCall, CCIE #25044
Blogs and organic groups at http://www.ccie.net