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Configuration Guide - IP Multicast

CloudEngine 12800 and 12800E V200R005C10

This document describes the configurations of IP multicast, including IP multicast basics, IGMP, MLD, PIM (IPv4), PIM (IPv6), MSDP, multicast VPN, multicast route management (IPv4), multicast route management (IPv6), IGMP snooping, MLD snooping, static multicast MAC address, multicast VLAN, multicast network management.
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PIM Neighbor Relationships in Multicast VPN

PIM Neighbor Relationships in Multicast VPN

On the public network, PIM provides multicast services for the public network instance. In the VPN instances, PIM establishes PIM neighbor relationships between PEs and CEs and between PEs using MTs.

PIM neighbor relationships can be established between two or more directly connected devices on the same network segment. There are three types of PIM neighbor relationships in the multicast VPN. VPNA in Figure 7-4 is used as an example to describe PIM neighbor relationships. Figure 7-5 shows the PIM neighbor relationships on VPNA.

Figure 7-4 Typical BGP/MPLS IP VPN networking
Figure 7-5 PIM neighbor relationship among CE, PE, and P devices
  • PE-PE neighbor relationship: is established through an MT after the local PE bound to the VPN instance receives Hello packets on the MTI from the VPN instance on the remote PE. A PE-PE neighbor relationship is used to discover reverse path forwarding (RPF) neighbors and check the PIM capability of the remote PE.
  • PE-CE neighbor relationship: is established between a PE interface bound to a VPN instance and the CE interface connected to the PE interface. A PE-CE neighbor relationship is used to create a multicast routing table and establish a rendezvous point tree (RPT) or shortest path tree (SPT) on the VPN.
  • PE-P neighbor relationship: is established between a PE interface bound to the public network instance and the P interface connected to the PE interface.
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Updated: 2019-04-20

Document ID: EDOC1100074724

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