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Multicast over Layer 3 VPNs
The JUNOS software provides three 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 with service provider tunnels
operating in any-source multicast (ASM) mode—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. This information is provided
to you in case you already have dual PIM multicast VPNs configured
on your network.
- Draft-rosen multicast VPNs with service provider tunnels
operating in source-specific multicast (SSM) mode—Described
in RFC 4364, BGP/MPLS IP Virtual Private Networks (VPNs) and based on the IETF Internet draft draft-rosen-vpn-mcast-07.txt, Multicast in MPLS/BGP IP VPNs. For more information about these
types of draft-rosen multicast VPNs, see the JUNOS Multicast Protocols Configuration Guide.
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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