4000 Router Series IP Multicast Configuration Guide

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239.1.1.1 1.1.1.1 MTunnel0 a

# Display information about the default-groups in VPN instances on PE 2.

[PE2] display multicast-domain default-group

Group address Source address Interface VPN instance

239.1.1.1 1.1.1.2 MTunnel0 a

239.1.1.1 1.1.1.2 MTunnel1 b

# Display information about the default-groups in VPN instances on PE 3.

[PE3] display multicast-domain default-group

Group address Source address Interface VPN instance

239.1.1.1 1.1.1.3 MTunnel0 a

239.2.2.2 1.1.1.3 MTunnel1 b

Inter-AS MD VPN configuration example

Network requirements

Item Network re

uirements

Multicast sources

and receivers

• In VPN instance a, S 1 is a multicast source, and R 2 is a receiver.

• In VPN instance b, S 2 is a multicast source, and R 1 is a receiver.

• For VPN instance a, the default-group address is 239.1.1.1.

• For VPN instance b, the default-group address is 239.4.4.4.

PE interfaces and

VPN instances to

which they belong

• PE 1: Ethernet 1/2 belongs to VPN instance a. Ethernet 1/3 belongs to VPN instance

b. Ethernet 1/1 and Loopback 1 belong to the public network instance.

• PE 2: Ethernet 1/1, Ethernet 1/2, Loopback 1, and Loopback 2 belong to the public

network instance.

• PE 3: Ethernet 1/1, Ethernet 1/2, Loopback 1, and Loopback 2 belong to the public

network instance.

• PE 4: Ethernet 1/2 belongs to VPN instance a. Ethernet 1/3 belongs to VPN

instance b. Ethernet 1/1 and Loopback 1 belong to the public network instance.

Unicast routing

protocols and MPLS

• Configure OSPF separately in AS 100 and AS 200, and configure OSPF between

the PEs and CEs.

• Establish BGP peer connections between PE 1, PE 2, PE 3 and PE 4 on their respective

Loopback 1 and exchange all VPN routes between them.

• Configure MPLS separately in AS 100 and AS 200.

IP multicast routing

• Enable IP multicast routing on the public network on PE 1, PE 2, PE 3, and PE 4.

• Enable IP multicast routing in VPN instance a on PE 1 and PE 4.

• Enable IP multicast routing in VPN instance b on PE 1 and PE 4.

• Enable IP multicast routing on CE a1, CE a2, CE b1, and CE b2.