R3303-HP HSR6800 Routers IP Multicast Configuration Guide

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Multi-hop EBGP interconnectivity
As shown in Figure 73, a VPN network involves AS 1 and AS 2. PE 3 and PE 4 are the ASBRs for AS 1
and AS 2, respectively. PE 3 and PE 4 are interconnected through their respective public network
instance and treat each other as a P device.
Figure 73 Multi-hop EBGP interconnectivity
In the multi-hop EBGP interconnectivity approach, only one MD needs to be established for all the ASs,
and public network multicast traffic between different ASs is transmitted within this MD.
Multicast VPN configuration task list
Task Remarks
Configuring MD-VPN
Enabling IP multicast routing in a VPN instance Required.
Configuring a share-group and an MTI binding Required.
Configuring MDT switchover parameters Optional.
Enabling switch-group reuse logging Optional.
Configuring BGP MDT
Configuring BGP MDT peers or peer groups Required.
Configuring a BGP MDT route reflector Optional.
Specifying the source IP address for multicast across VPNs Optional.
Configuring MD-VPN
This section describes how to configure MD-VPN.
Configuration prerequisites
Before you configure MD-VPN, complete the following tasks:
• Configure any unicast routing protocol to provide intra-domain interoperability at the network layer.
• Configure MPLS L3VPN.
• Configure PIM (PIM-DM, PIM-SM, BIDIR-PIM, or PIM-SSM).
• Determine the VPN instance names and route distinguishers (RDs).