实验20 PIM DM组播实验一、实验拓扑图，如图1.1所示：图1.1 PIM DM组播实验二、实验说明：1．R1通过ping模拟组播源;2．R4为组员；3．全网运行ospf同步路由信息。

三、预配置：1.R1的预配置：Router>enRouter#conf tEnter configuration commands, one per line. End with CNTL/Z.Router(config)#no ip do loRouter(config)#line 0Router(config-line)#no exec-tRouter(config-line)#logg sRouter(config-line)#Router(config-line)#ho R1R1(config)#int lo0R1(config-if)#ip add 1.1.1.1 255.255.255.0R1(config-if)#int s0/0R1(config-if)#ip add 12.0.0.1 255.255.255.0R1(config-if)#no sh2.R2的预配置：Router>enRouter#conf tEnter configuration commands, one per line. End with CNTL/Z.Router(config)#no ip do loRouter(config)#line 0Router(config-line)#no exec-tRouter(config-line)#logg sRouter(config-line)#R2(config)#int lo0R2(config-if)#ip add 2.2.2.2 255.255.255.0R2(config-if)#int s0/0R2(config-if)#ip add 12.0.0.2 255.255.255.0R2(config-if)#no shR2(config-if)#int s0/1R2(config-if)#ip add 23.0.0.2 255.255.255.0R2(config-if)#no sh3.R3的预配置：Router>enRouter#conf tEnter configuration commands, one per line. End with CNTL/Z.Router(config)#no ip do loRouter(config)#line 0Router(config-line)#no exec-tRouter(config-line)#logg sRouter(config-line)#Router(config-line)#ho R3R3(config)#int lo0R3(config-if)#ip add 3.3.3.3 255.255.255.0R3(config-if)#int s0/0R3(config-if)#ip add 34.0.0.3 255.255.255.0R3(config-if)#no shR3(config-if)#int s0/1R3(config-if)#ip add 23.0.0.3 255.255.255.0R3(config-if)#no sh4.R4的预配置：Router>enRouter#conf tEnter configuration commands, one per line. End with CNTL/Z.Router(config)#no ip do loRouter(config)#line 0Router(config-line)#no exec-tRouter(config-line)#logg sRouter(config-line)#Router(config-line)#ho R4R4(config)#int lo0R4(config-if)#ip add 4.4.4.4 255.255.255.0R4(config-if)#int s0/0R4(config-if)#ip add 34.0.0.4 255.255.255.0R4(config-if)#no sh四、配置及调试过程：1.在各路由器上配置IGP同步路由信息：R1(config-router)#router-id 1.1.1.1R1(config-router)#network 0.0.0.0 0.0.0.0 area 0R2(config-if)#router os 1R2(config-router)#router-id 2.2.2.2R2(config-router)#net 0.0.0.0 0.0.0.0 a 0R3(config-if)#router os 1R3(config-router)#router-id 3.3.3.3R3(config-router)#net 0.0.0.0 0.0.0.0 a 0R4(config-if)#router os 1R4(config-router)#router-id 4.4.4.4R4(config-router)#net 0.0.0.0 0.0.0.0 a 02.接口启用PIM-DMR2(config)#ip multicast-routing //全局开启多播协议R2(config)#int s0/0R2(config-if)#ip pim dense-mode //接口启用PIM-DMR2(config-if)#int s0/1R2(config-if)#ip pim dense-modeR3(config-router)#ip multicast-routingR3(config)#int s0/0R3(config-if)#ip pim dense-modeR3(config-if)#int s0/1R3(config-if)#ip pim dense-modeR4(config)#ip multicast-routingR4(config)#int s0/0R4(config-if)#ip pim dense-modeR4(config-if)#int lo 0R4(config-if)#ip igmp join-group 224.1.1.1 //将接口加入224.1.1.1，接受其流量3.用ping测试组播情况：//在R1上ping组播地址R1(config-router)#do ping 224.1.1.1Type escape sequence to abort.Sending 1, 100-byte ICMP Echos to 224.1.1.1, timeout is 2 seconds:Reply to request 0 from 34.0.0.4, 224 msR1(config-router)#do sh ip mroute 224.1.1.1Group 224.1.1.1 not foundR1(config-router)#do ping 224.1.1.1Type escape sequence to abort.Sending 1, 100-byte ICMP Echos to 224.1.1.1, timeout is 2 seconds:Reply to request 0 from 34.0.0.4, 188 ms//R4上调试ICMPR4(config-if)#do deb ip icmpICMP packet debugging is onR4(config-if)#*Mar 1 00:41:25.695: ICMP: echo reply sent, src 34.0.0.4, dst 12.0.0.1 //R4相应4.查看组播路由：R2(config-if)#do sh ip mroute 224.1.1.1IP Multicast Routing TableFlags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,L - Local, P - Pruned, R - RP-bit set, F - Register flag,T - SPT-bit set, J - Join SPT, M - MSDP created entry,X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,U - URD, I - Received Source Specific Host Report, Z - Multicast TunnelY - Joined MDT-data group, y - Sending to MDT-data group Outgoing interface flags: H - Hardware switchedTimers: Uptime/ExpiresInterface state: Interface, Next-Hop or VCD, State/Mode(*, 224.1.1.1), 00:00:09/stopped, RP 0.0.0.0, flags: DIncoming interface: Null, RPF nbr 0.0.0.0Outgoing interface list:Serial0/1, Forward/Dense, 00:00:09/00:00:00(12.0.0.1, 224.1.1.1), 00:00:09/00:02:53, flags: TIncoming interface: Serial0/0, RPF nbr 0.0.0.0Outgoing interface list:Serial0/1, Forward/Dense, 00:00:09/00:00:00roup 224.1.1.1 not foundR3(config-if)#do sh ip mroute 224.1.1.1IP Multicast Routing TableFlags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,L - Local, P - Pruned, R - RP-bit set, F - Register flag,T - SPT-bit set, J - Join SPT, M - MSDP created entry,X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,U - URD, I - Received Source Specific Host Report, Z - Multicast TunnelY - Joined MDT-data group, y - Sending to MDT-data group Outgoing interface flags: H - Hardware switchedTimers: Uptime/ExpiresInterface state: Interface, Next-Hop or VCD, State/Mode(*, 224.1.1.1), 00:01:35/stopped, RP 0.0.0.0, flags: D Incoming interface: Null, RPF nbr 0.0.0.0Outgoing interface list:Serial0/1, Forward/Dense, 00:01:35/00:00:00Serial0/0, Forward/Dense, 00:01:35/00:00:00(12.0.0.1, 224.1.1.1), 00:01:35/00:01:33, flags: T Incoming interface: Serial0/1, RPF nbr 23.0.0.2 Outgoing interface list:Serial0/0, Forward/Dense, 00:01:35/00:00:00。