Multicast over Layer 3 VPNs

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The JUNOS software provides two ways to configure IP version 4 (IPv4) multicast over Layer 3 virtual private networks (VPNs):

Multiprotocol BGP-based multicast VPNs: next-generation, defined by a set of sender sites and a set of receiver sites and use BGP as the signaling protocol. We recommend using this method to configure multicast on Layer 3 VPNs because it is a simpler implementation than draft-rosen multicast VPNs.
Draft Rosen multicast VPNs—Described in RFC 4364, BGP/MPLS IP Virtual Private Networks (VPNs) and based on Section Two of the IETF Internet draft draft-rosen-vpn-mcast-06.txt, Multicast in MPLS/BGP VPNs (expires April 2004). This information is provided to you in case you already have dual PIM multicast VPNs configured on your network.

This document assumes the reader is familiar with Layer 3 VPN operation on Juniper Networks routers, as well as standard PIM configurations. For more information on Protocol Independent Multicast (PIM) and Multicast Source Discovery Protocol (MSDP) and their usage in a Layer 3 VPN, see the JUNOS Multicast Protocols Configuration Guide. For more information on Layer 3 VPN configuration, see the JUNOS VPNs Configuration Guide. Both manuals are located at http://www.juniper.net/techpubs/software/index.html.

This feature guide covers these topics:

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