Re: [Mpls-interop] MPLS over MPLS-TP

>-----Original Message-----
>From: Ben Niven-Jenkins [mailto:benjamin.niven-jenkins@bt.com] 
>Sent: Wednesday, December 10, 2008 2:41 PM
>To: mpls-interop@ietf.org
>Subject: [Mpls-interop] MPLS over MPLS-TP
>
>Colleagues,
>
>What's the current view of how to support MPLS over MPLS-TP?
>
>Do we put a PW in the middle (like draft-bryant) or do we just 
>use the label stack and have MPLS directly over MPLS-TP?

JD:  I always thought this was a terrible idea.  Since MPLS-TP is a
particular MPLS profile and since we said that the MPLS dataplane
wouldn't be touched, I think we would either add entries to the stack
(MPLS), or place an IP packet after the stack (IP).

>
>Advantage of the first is that it gives layer separation (e.g. 
>If the two layers are operated by different parties), 
>advantage of the second is it's probably a bit simpler.
>
>Do the drafts we have say anything about the MPLS over MPLS-TP 
>case? Same for IP over MPLS-TP?
>
>Thanks
>Ben
>
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