Configuracoesdo IGMP O IGMP e configurado em todas as interfaces queestao com o multicast PIM configurado. Caso algum host conectado ao roteadorenviar um trafego de join multicast o roteador automaticamente passara para oSource daquele grupo, caso exista.Nesse exemplo pode-se utilizar o comando ip igmp join-group para enviar uma solicitacao de join no grupo multicast. 4.6 ComandosImportantes de VerificacaoPE1#showip mroute vrf VPN_AIPMulticast Routing TableFlags: D- Dense, S - Sparse, B - Bidir Group, s - SSMGroup, C - Connected, L - Local, P -Pruned, R - RP-bit set, F - Register flag, T - SPT-bit set, J - Join SPT, M - MSDPcreated entry, X - Proxy Join Timer Running, A -Candidate for MSDP Advertisement, U - URD, I - Received Source SpecificHost Report, Z - Multicast Tunnel Y - Joined MDT-data group, y - Sendingto MDT-data groupOutgoinginterface flags: H - Hardware switched, A - Assert winner Timers: Uptime/Expires Interface state: Interface, Next-Hop or VCD,State/Mode(*,224.1.1.1), 00:00:16/stopped, RP 20.20.20.1, flags: SPF Incoming interface: Tunnel0, RPF nbr 2.2.2.2 Outgoing interface list: Null(10.10.10.1,224.1.1.1), 00:00:16/00:03:23, flags: FT Incoming interface: FastEthernet0/0, RPF nbr0.0.0.0 Outgoing interface list: Tunnel0, Forward/Sparse, 00:00:16/00:03:13(*,224.0.1.40), 00:48:47/00:02:59, RP 20.20.20.1, flags: SJCL Incoming interface: Tunnel0, RPF nbr 2.2.2.2 Outgoing interface list: FastEthernet0/0, Forward/Sparse,00:48:14/00:02:59P1#show mpls l2transport vc detail Local interface: Fa0/0 up, line protocol up,Ethernet up Destination address: 22.22.22.22, VC ID: 100, VC status: up Output interface: Fa1/0, imposed label stack {16} Preferred path: not configured Defaultpath: active Tunnel label: imp-null, next hop 12.12.12.2 Createtime: 04:10:24, last status change time: 04:05:47 Signaling protocol: LDP, peer 22.22.22.22:0 up MPLSVC labels: local 16, remote 16 GroupID: local 0, remote 0 MTU:local 1500, remote 1500 Remote interface description: Sequencing: receive disabled, send disabled VCstatistics: packet totals: receive 8301, send 8332 bytetotals: receive 847189, send 1033403 packet drops: receive 0, send 205 Configuracao5.1 CE1!ipmulticast-routing !!interfaceFastEthernet0/0 ip address 10.10.10.1 255.255.255.0 ip pim sparse-mode!ip route0.0.0.0 0.0.0.0 10.10.10.254!ip pimrp-address 20.20.20.1!5.2 PE1!ip cef!ip vrf VPN_A rd 1:1 route-target export 1:1 route-target import 1:1 mdt default 232.0.0.1!ip multicast-routing ip multicast-routing vrfVPN_A !mpls label protocol ldp!interface Loopback0 ipaddress 1.1.1.1 255.255.255.255 ip pimsparse-mode!interface FastEthernet0/0 ip vrf forwarding VPN_A ipaddress 10.10.10.254 255.255.255.0 ip pimsparse-mode!interface FastEthernet1/0 ipaddress 12.12.12.1 255.255.255.0 ip pim sparse-mode mpls mtu1524 mpls ip!router ospf 1 router-id 1.1.1.1 network1.1.1.1 0.0.0.0 area 0 network12.12.12.1 0.0.0.0 area 0!router bgp 1 bgprouter-id 1.1.1.1 neighbor2.2.2.2 remote-as 1 neighbor2.2.2.2 update-source Loopback0 ! address-family vpnv4 neighbor2.2.2.2 activate neighbor2.2.2.2 send-community extended! address-family ipv4 vrf VPN_A redistribute connected!ip pim ssm default!ip pim vrf VPN_A rp-address20.20.20.1!5.3 P1!ip cef!mplslabel protocol ldp!pseudowire-class ATOM encapsulation mpls!!!interfaceLoopback0 ip address 11.11.11.11 255.255.255.255!interfaceFastEthernet0/0 xconnect 22.22.22.22100 pw-class ATOM!interfaceFastEthernet1/0 ip address 12.12.12.1 255.255.255.0 mpls mtu 1524 mpls ip!routerospf 1 router-id 11.11.11.11 network 11.11.11.11 0.0.0.0 area 0 network 12.12.12.1 0.0.0.0 area 0!5.4 P2!ip cef!mplslabel protocol ldp!pseudowire-class ATOM encapsulation mpls!!interfaceLoopback0 ip address 22.22.22.22 255.255.255.255!interfaceFastEthernet0/0 xconnect 11.11.11.11100 pw-class ATOM!interfaceFastEthernet1/0 ip address 12.12.12.2 255.255.255.0 mpls mtu 1524 mpls ip!routerospf 1 router-id 22.22.22.22 network 12.12.12.2 0.0.0.0 area 0 network 22.22.22.22 0.0.0.0 area 0!5.5 PE2!ip cef!ip vrfVPN_A rd 1:1 route-target export 1:1 route-target import 1:1 mdt default 232.0.0.1!ipmulticast-routing ipmulticast-routing vrf VPN_A !mplslabel protocol ldp!!interfaceLoopback0 ip address 2.2.2.2 255.255.255.255 ip pim sparse-mode!interfaceFastEthernet0/0 ip vrf forwardingVPN_A ip address 20.20.20.254 255.255.255.0 ip pim sparse-mode!interfaceFastEthernet1/0