4000 Router Series IP Multicast Configuration Guide

[RouterA-Tunnel0] source 20.1.1.1

[RouterA-Tunnel0] destination 30.1.1.2

[RouterA-Tunnel0] quit

# Create interface Tunnel 0 on Router C and specify the tunnel encapsulation mode as GRE over

IPv4.

<RouterC> system-view

[RouterC] interface tunnel 0 mode gre

# Configure the IP address for interface Tunnel 0 and specify its source and destination addresses.

[RouterC-Tunnel0] ip address 50.1.1.2 24

[RouterC-Tunnel0] source 30.1.1.2

[RouterC-Tunnel0] destination 20.1.1.1

[RouterC-Tunnel0] quit

4. Enable IP multicast routing, PIM-DM, and IGMP:

# On Router A, enable multicast routing globally and enable PIM-DM on each interface.

[RouterA] multicast routing

[RouterA-mrib] quit

[RouterA] interface ethernet 1/1

[RouterA-Ethernet1/1] pim dm

[RouterA-Ethernet1/1] quit

[RouterA] interface ethernet 1/2

[RouterA-Ethernet1/2] pim dm

[RouterA-Ethernet1/2] quit

[RouterA] interface tunnel 0

[RouterA-Tunnel0] pim dm

[RouterA-Tunnel0] quit

# On Router C, enable multicast routing globally, enable IGMP on Ethernet 1/1, and enable

PIM-DM on each interface.

[RouterC] multicast routing

[RouterC-mrib] quit

[RouterC] interface ethernet 1/1

[RouterC-Ethernet1/1] igmp enable

[RouterC-Ethernet1/1] pim dm

[RouterC-Ethernet1/1] quit

[RouterC] interface ethernet 1/2

[RouterC-Ethernet1/2] pim dm

[RouterC-Ethernet1/2] quit

[RouterC] interface tunnel 0

[RouterC-Tunnel0] pim dm

[RouterC-Tunnel0] quit

5. On Router C, configure a static multicast route to specify its RPF neighbor toward the source is

interface Tunnel 0 on Router A.

[RouterC] ip rpf-route-static 10.1.1.0 24 50.1.1.1

Verifying the configuration

The source sends the multicast data to the multicast group 225.1.1.1 and the receiver host can receive the

multicast data after joining the multicast group. You can use the display pim routing-table command to

display PIM routing table information on routers. For example: