Subject: [PWE3] MEF E-Tree over MPLS/VPLS

From: Raymond Key <[email-masked]>
Date: Tue, 08 Dec 2009 13:28:10 +1100

Hi Ed,

"Now I understand that the draft states it does not intend to address efficient packet replication or bandwidth optimization, though I think this could be accomplished with another step.  Thus to the next problem - how we learn if a root lives off a specific pseudowire.  Option a) we track the presence of the L-bit from a pseudowire (in a table like the bridge table) to ensure we correctly forward from leaf to root, root to root, etc.  Option b) we use a BGP autodiscovery mechanism to distribute whether a PE "owns" a root AC for a given VFI or not."

[RK] Yes, we intend to first address the mandatory requirement of E-Tree service definition with minimal extension to current stardards, then next step look at packet replication and bandwidth optimization. Thanks for your input. We will consider the options in our next step.

Raymond