Cisco IOS Cookbook 中文精简版第二十三章 IP组播

Router1#configure terminal

Enter configuration commands, one per line.  End with CNTL/Z.

Router1(config)#ip multicast-routing

Router1(config)#access-list 115 permit any any udp 3535

Router1(config)#access-list 115 deny any any udp

Router1(config)#interface FastEthernet0/0

Router1(config-if)#ip directed broadcast

Router1(config-if)#ip multicast helper-map broadcast 239.3.5.35 115

Router1(config-if)#exit

Router1(config)#ip pim sparse-dense-mode

Router1(config)#ip forward-protocol udp 3535

Router1(config)#end

Router1#

最后一跳路由器

Router2#configure terminal

Enter configuration commands, one per line.  End with CNTL/Z.

Router2(config)#ip multicast-routing

Router2(config)#access-list 115 permit any any udp 3535

Router2(config)#access-list 115 deny any any udp

Router2(config)#interface Ethernet0

Router2(config-if)#ip address 192.168.9.1 255.255.255.0

Router2(config-if)#ip directed broadcast

Router2(config-if)#ip multicast helper-map 239.3.5.35 192.168.9.255 115

Router2(config-if)#ip pim sparse-dense-mode

Router2(config-if)#exit

Router2(config)#ip igmp join-group 239.3.5.35

Router2(config)#ip forward-protocol udp 3535

Router2(config)#end

Router2#

注释 IP Multicast Helper的特性帮助路由器实现了此种转换，但是此种转化比较耗费CPU，仅仅是临时解决方案

23.20.  显示组播状态信息

提问 显示组播状态信息

回答

Router#show ip mroute

Router#show ip mroute count

Router#show ip mroute active

Router#show ip igmp groups