1.R1配置OSPF
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0
[R1-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255
[R1-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
2.R2配置OSPF
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
[R2-ospf-1-area-0.0.0.0]network 12.1.1.0 0.255.255.255
[R2-ospf-1-area-0.0.0.0]network 23.1.1.0 0.255.255.255
3.R3配置OSPF
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 23.1.1.0 0.255.255.255
[R3-ospf-1-area-0.0.0.0]network 192.168.3.0 0.0.0.255
4.R1配置GRE隧道
[R1]interface Tunnel 0/0/0
[R1-Tunnel0/0/0]ip address 172.16.1.1 24
[R1-Tunnel0/0/0]tunnel-protocol gre
[R1-Tunnel0/0/0]source 12.1.1.1
[R1-Tunnel0/0/0]destination 23.1.1.3
5.R3配置GRE隧道
[R3]interface Tunnel 0/0/0
[R3-Tunnel0/0/0]ip address 172.16.1.2 24
[R3-Tunnel0/0/0]tunnel-protocol gre
[R3-Tunnel0/0/0]source 23.1.1.3
[R3-Tunnel0/0/0]destination 12.1.1.1
6.R1配置组播路由
[R1]multicast routing-enable
[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]pim dm
[R1]interface GigabitEthernet 0/0/1
[R1-GigabitEthernet0/0/1]pim dm
[R1]interface Tunnel 0/0/0
[R1-Tunnel0/0/0]pim dm
7.R2配置组播路由
[R3]multicast routing-enable
[R3]interface GigabitEthernet 0/0/0
[R3-GigabitEthernet0/0/0]igmp enable
[R3]interface GigabitEthernet 0/0/1
[R3-GigabitEthernet0/0/1]pim dm
[R3]interface Tunnel 0/0/0
[R3-Tunnel0/0/0]pim dm
8.R3 配置组播静态路由
[R3]ip rpf-route-static 10.1.1.0 24 172.16.1.1
9.组播源向组播组224.1.1.1发送组播数据,接收者加入该组播组后能够收到组播源发来的组播数据,查看PIM路由表信息
<R3>display pim routing-table
VPN-Instance: public net
Total 1 (*, G) entry; 1 (S, G) entry
(*, 224.1.1.1)
Protocol: pim-dm, Flag: WC EXT
UpTime: 00:03:48
Upstream interface: NULL
Upstream neighbor: NULL
RPF prime neighbor: NULL
Downstream interface(s) information: None
(10.1.1.1, 224.1.1.1)
Protocol: pim-dm, Flag: EXT ACT
UpTime: 00:04:34
Upstream interface: Tunnel0/0/0
Upstream neighbor: 172.16.1.1
RPF prime neighbor: 172.16.1.1
Downstream interface(s) information: None
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