Multicast in Virtual Private LAN Service (VPLS)
This RFC 7117 was published in 2014
RFCs 4761 and 4762 describe a solution for Virtual Private LAN Service (VPLS) multicast that relies on the use of point-to-point or multipoint-to-point unicast Label Switched Paths (LSPs) for carrying multicast traffic.
This solution has certain limitations for certain VPLS multicast traffic profiles.
For example, it may result in highly non-optimal bandwidth utilization when a large amount of multicast traffic is to be transported.
RFC 7117 introduction
[RFC4761] and [RFC4762] describe a solution for VPLS multicast/broadcast that relies on the use of pseudowires transported over unicast point-to-point (P2P) RSVP Traffic Engineering (RSVP-TE) or multipoint-to-point (MP2P) LDP Label Switched Paths (LSPs) ([RFC3209] [RFC5036]).
In this document, we refer to this solution as "ingress replication".
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