核心步骤

1、配置单播路由ospf

ospf 100 router-id XXXX

area 0

network 10.1.1.0 0.0.0.255

network 20.1.1.0 0.0.0.255

network 30.1.1.0 0.0.0.255

network 40.1.1.0 0.0.0.255

2、开启组播路由功能

[R1]multicast routing-enable

[R2]multicast routing-enable

[R3]multicast routing-enable

3、全网配置pim dm

#

interface GigabitEthernet0/0/0

ip address 20.1.1.2 255.255.255.0  

pim dm

#

interface GigabitEthernet0/0/1

ip address 30.1.1.1 255.255.255.0  

pim dm

4、末端路由配置IGMP(INTERNET GROUP MANAGEMENT PROTOCOL)

interface GigabitEthernet0/0/1

ip address 40.1.1.1 255.255.255.0  

pim dm

igmp enable

igmp static-group 239.0.0.12

#

5、服务器端配置

6、客户端配置