1. Network requirements

Lanswitch 1 is connected to the multicast source through the interface Vlan-interface 10; Connect to LAN Switch 2； through interface Vlan-interface 1 1; Connect to Lanswitch3 through interface Vlan-interface 12. By running PIM-DM, multicast is realized between the receiver 1, the receiver 2 and the multicast source.

2. Network diagram

3. Configuration steps

Only the configuration steps of Lanswitch 1 are listed, and Lanswitch2 is similar to Lanswitch3.

# Start the multicast routing protocol.

System view

[H3C] Multicast Routing-Enabled

# Start the IGMP and PIM-DM protocols on the interface.

[H3C] vlan 10

[H3C-vlan 10] port Ethernet 1/0/2 to Ethernet 1/0/3.

[H3C-vlan 10] exit

[H3C] Virtual LAN 1 1

[H3C-vlan 1 1] Port Ethernet 1/0/4 to Ethernet 1/0/5.

[H3C-vlan 1 1] exit.

[H3C] Virtual LAN 12

[H3C-vlan 12] Port Ethernet 1/0/6 to Ethernet 1/0/7.

[H3C-vlan 12] Exit

[H3C] Interface Vlan- Interface 10

[H3C-Vlan- interface 10] ip address1.1.1255.255.0.0.

[H3C-Vlan- interface 10] igmp enabled.

[H3C-Vlan- interface 10] pim dm

[H3C-Vlan- interface 10] Exit

[H3C] interface Vlan- interface 1 1

[H3C-Vlan- interface 1 1] ip address 2.2.2.2 255.255.0.0.

[H3C-Vlan- interface 1 1] pim dm

[H3C-Vlan- interface 1 1] exit.

[H3C] Interface Vlan- Interface 12

[3.3.3.3 H3C VLAN interface 12] ip address 255.255.0.0.

[H3C-Vlan- interface 12] pim dm