[c-nsp] Multicast over VPLS

[Zitouni Rachid]

No solution within a single vpls domain wich is by definition a broadcast domain.
If you have a vc-lsp between R2 and R3 and a vc-lsp between R2 and R4
You can optimize using igmp snooping on vc-lsp avoiding unnecessary multicast replication.  
Other way is to make circuit loop on R3 and establish vc-lsps between R2 and R3 then R3 and R4

HiH
Rachid 

-----Message d'origine-----
De : cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] De la part de alaerte.vidali at nsn.com
Envoyé : jeudi 29 novembre 2007 19:30
À : cisco-nsp at puck.nether.net
Objet : [c-nsp] Multicast over VPLS

Hi,

Any information about what draft Cisco is considering/will adopt to
solve bandwidth waste issue with Multicast over VPLS?

Besides standard, do you see any solution currently available to avoid
PE to send several flows of the same multicast over a single link on
ring topology?


Topology:

VPLS between R2/R3/R4/R5
                                   user     user
                                     |       |
Multicast_Server------R1-----R2-----R3-----R4----R5
                                                
By default, R2 will send 3 times the same flow on link R2---R3.

Tks a lot,
Alaerte
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