第12章 组播

12.1 组播路由与转发

图片[1]-第12章 组播-大赛人网
图12-1 组播及IGMP基本配置网络拓扑
图片[2]-第12章 组播-大赛人网
图12-2 组播源配置
图片[3]-第12章 组播-大赛人网
图12-3 PC1配置

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 13.1.1.0 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
[R2-ospf-1-area-0.0.0.0]network 192.168.2.0 0.0.0.255

3.R3配置OSPF

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]ar
[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 13.1.1.0 0.255.255.255
[R3-ospf-1-area-0.0.0.0]network 23.1.1.0 0.255.255.255

4.R1配置PIM-DM

[R1]multicast routing-enable 
//使能IP组播路由
[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]pim dm
//接口使能PIM-DM
[R1]interface GigabitEthernet 0/0/1
[R1-GigabitEthernet0/0/1]pim dm
[R1]interface GigabitEthernet 0/0/2
[R1-GigabitEthernet0/0/2]pim dm

5.R2配置PIM-DM、IGMP

[R2]multicast routing-enable 
[R2]interface GigabitEthernet 0/0/0
[R2-GigabitEthernet0/0/0]pim dm 
[R2]interface GigabitEthernet 0/0/1
[R2-GigabitEthernet0/0/1]igmp enable
//使能igmp
[R2]interface GigabitEthernet 0/0/2
[R2-GigabitEthernet0/0/2]pim dm 

6.R3配置PIM-DM

[R3]multicast routing-enable 
[R3]interface GigabitEthernet 0/0/1
[R3-GigabitEthernet0/0/1]pim dm 
[R3]interface GigabitEthernet 0/0/2
[R3-GigabitEthernet0/0/2]pim dm 

7.R2上查看到Source的RPF信息,显示Source的RPF邻居为R1

[R2]display multicast rpf-info 10.1.1.1 
 VPN-Instance: public net
 RPF information about source: 10.1.1.1
     RPF interface: GigabitEthernet0/0/0, RPF neighbor: 12.1.1.1
     Referenced route/mask: 10.1.1.0/24
     Referenced route type: unicast
     Route selection rule: preference-preferred
     Load splitting rule: disable

8.R2上配置组播静态路由,指定到Source的RPF邻居为R3

[R2]ip rpf-route-static 10.1.1.1 24 23.1.1.3

9.R2上查看到Source的RPF信息,显示Source的RPF邻居为R3

[R2]display multicast rpf-info 10.1.1.1
 VPN-Instance: public net
 RPF information about source: 10.1.1.1
     RPF interface: GigabitEthernet0/0/2, RPF neighbor: 23.1.1.3
     Referenced route/mask: 10.1.1.0/24
     Referenced route type: mstatic
     Route selection rule: preference-preferred
     Load splitting rule: disable
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