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Multicast VPN—Current Deployments Based on draft-rosen-vpn-mcast-08.txt Many similarities to unicast, and some differences CE-routers maintain PIM adjacency with PE-router only Similar concept to 2547/4364 VPNs P-routers do not hold (S, G) state for individual customers Unlike unicast, there is some per-customer state in P-routers PE-routers exchange customer routing information using PIM Contrast to BGP for unicast Customer multicast group addresses need not be unique Same as 2547/4364 |