[j-nsp] The P2MP LSP story when using LDP for VPLS?

[Jonathan Lassoff]

Excerpts from Patrik Olsson's message of Sun Dec 06 21:57:11 -0800 2009:
> Yes, today P2MP can only be achieved with RSVP. Also, P2MP is thought
> for a different application than VPLS perhaps. VPLS is bidirectional
> any-to-any communication. P2MP is one-way from-on-to-many communication.

P2MP LSP's are totally applicable in use with VPLS. Broadcast frames,
unknown destination unicast, and multicast (although in the case of
Ethernet, kinda like broadcast) need to get sent to all or multiple
PE's.

My understanding is that a P2MP LSP will duplicate the encap'ed frames
to use core bandwidth more efficiently.

--j