MVPN - Inter-AS Opção B
Autor: Bruno Barata | Publicado: 2011-11-24T11:35:00-02:00

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 <![endif]-->  1 &nbsp;&nbsp;&nbsp;&nbsp; Multicast VPN Inter-AS Opção B  1.1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Objetivo  Oito roteadores (CE1, PE1, P1, PE2, PE3, P2, PE4 e CE2) são conectados formando dois backbones com 3 roteadores e um CE conectado. Pede-se:  •&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; O protocolo de roteamento de backbone PE1-P1-PE2 deverá ser o OSPF na área 0 com todas as interfaces divulgadas e com mBGP e LDP no AS 1 para tráfego das vpns VRFs. O Router-reflector deverá ser o P1;  •&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; O protocolo de roteamento de backbone PE1-P1-PE2 deverá ser o ISIS na área 49.0001 com todas as interfaces divulgadas e com mBGP e LDP no AS 2 para tráfego das vpns VRFs. O Router-reflector deverá ser o P2;  •&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Tanto o CE1 quanto o CE2 deverão pertencer a VRF BLUE e deverá existir conectividade entre esses CEs usando a conexão entre os PEs PE2 e PE3 com Inter-AS Opção C;  •&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Deverá ser habilitado o multicast dentro da VRF BLUE com conectividade entre os CEs.  •&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; O MDT da VRF deverá ser 224.1.2.3;  •&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; O Rendezvous Point do AS 1 deverá ser o PE2 e o do AS 2 o PE3, ambos com conexão MSDP entre eles;  •&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; O RP da VRF deverá ser o CE1 estaticamente;  •&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; O CE1 é source de 227.2.2.2 e o CE2 é fonte deste grupo;  •&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; O CE2 é source de 227.1.1.1 e o CE2 é fonte deste grupo;  1.2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Topologia    1.3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; IOS utilizados  •&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; CE1, PE1, P1, PE2, PE3, P2, PE4 e CE2 – c7200-k91p-mz.122-25.S15.bin  1.4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Configuração dos Roteadores  1.4.1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Configurações do ISIS do Backbone  Em todos os roteadores configura-se o roteamento ISIS adicionando o endereçamento NET de acordo com a área designada e endereçamento de loopback. Dentro das interfaces que farão parte do ISIS, adiciona-se o comando “ip router isis” para habilitar o ISIS na interface. Por padrão, todos os roteadores farão vizinhança L1/L2. Pode-se alterar o level na interface ou no roteamento.  A configuração da métrica wide, maior que 63, é feita dentro do processo de roteamento pelo comando “default metric-style wide”.  1.4.2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Configurações do OSPF do Backbone  Em todos os roteadores configura-se o roteamento OSPF pelo comando “router ospf ” onde o “processo” é um numero do processo OSPF. O roteador também possui um router ID único que geralmente é a interface loopback ou então o maior endereço IP do roteador.  Para adicionar interfaces deve-se usar o comando “network   área ”. Um roteador pode ter interfaces em áreas distintas, define-se cada área pelo comando network.  Para o roteador fazer vizinhança OSPF é necessário que a rede da interface esteja no comando “network” e a interface não esteja configurada como “passive-interface”.  1.4.3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Configurações do MPLS  Antes de qualquer configuração, o Cisco Express forwarding deve ser habilitado com o comando “ip cef”. Para habilitar o MPLS no modo LDP, usa-se o comando global “mpls label protocol ldp”.  Para habilitar nas interfaces o LDP para vizinhança, usa-se o comando “mpls ip”.  1.4.4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Configuração do MBGP  Para estabelecer uma VPN é necessário configurar o MBGP para a troca de informações de prefixos de VPN. Pode-se somente configurar o MBGP nos roteadores PEs da rede que possuem conexão com os CEs, ou seja, conectados diretamente aos sites.  O MBGP funciona como o BGP, configura-se em todos os roteadores pelo comando “router bgp ” onde o “AS” é o Autonomous System do backbone. Dentro da configuração de BGP adicionam-se os vizinhos estaticamente com o comando “neighbor  remote-as ”.  Adiciona-se o IP da interface loopback como Router-ID pelo comando “bgp router-id ”.   Como os roteadores dentro do mesmo AS não divulgarão as rotas IBGP entre eles, faz-se o full-mesh de conexão MBGP ou configuram-se os roteadores centrais como Router-reflectors adicionando os demais roteadores como clientes pelo comando “neighbor  router-reflector-client”.  O MBGP é configurado dentro do protocolo BGP, porém deve-se separar a família de roteamento com o comando “address-family vpnv4”. Para o envio de prefixos das VPNs, deve-se habilitar o envio de community extendida com o comando “neighbor  send-community extended”.  Todos os recursos como route-map, next-hop-self, router-reflector, etc. podem ser configurados dentro da família VPNv4 para manipular ou resolver problemas de roteamento.  1.4.5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Criando uma VPN VRF no BGP  Após todos os roteadores PEs da rede possuem conectividade MBGP, ou diretamente ou por router-reflector, cria-se a VPN com o comando “ip vrf ”, dentro desse comando ficam os parâmentros de marcação da VPN e das communities associadas aos prefixos daquela VPN. Configura-se o Route-Distinguisher da VPN, que deve ser único na rede, com comando “rd :”, e também cria-se a&nbsp; community que será exportada para aqueles prefixos de rede com o comando “route-target  :”, onde “import” significa importar as rotas e “export” exportar as rotas.  Cria-se então uma address-family dentro do BGP com o comando “address-family ipv4 vrf ” com o mesmo nome da VPN criada no “ip vrf” fora do roteamento BGP. Dentro dessa address-family são configuradas as redes que serão redistribuídas para os outros sites. Para divulgar as redes é necessário que a rede exista na tabela de roteamento interna e, ou adicionar o comando “network  mask ” ou redistribuindo rotas para o MBGP com o comando “redistribute ”, que pode ser vinculado à um route-map para definir exatamente as rotas que serão divulgadas de um protocolo para outros sites.  Enfim, para que uma interface conectada ao CE faça parte da VPN BGP, usa-se o comando “ip vrf forwarding ” dentro da interface.  1.4.6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Configuração do Inter-AS Opção C  A opção C do Inter-AS usa uma conexão MBGP entre os roteadores Router-Reflectors de VPN da rede para a troca de informações de prefixos de VPN. Pode-se acordar os mesmos RD e RT ou exportar e importar os RTs do AS vizinho, caso sejam diferentes.   No ASBR deve-se estabelecer uma vizinhança BGP tanto com o RR do próprio AS quanto com o ASBR do AS vizinho, e deve-se adicionar o “send-label” na configuração de vizinhança com todos os roteadores, do AS vizinho e o RR, para que seja enviadas as informações de NLRI e Label.  Na interface de interconexão no ASBR deve-se adicionar o comando para habilitar o mpls BGP “mpls bgp forwarding”.  Deve-se também desabilitar o filtro de route-target do AS no MBGP com o RR do AS vizinho usando o comando “no bgp default route-target filter”.  Para que no Inter-AS o caminho até o source do multicast seja conhecido, deve-se estabelecer a sessão BGP Multicast entre os roteadores de borda “address-family ipv4 multicast”. Nessa sessão deve-se anuncia os endereços dos PEs que terão as fontes multicast ativas.  Na vizinhança com o Router Reflector deve-se adicionar o comando “next-hop-self” para que o ASBR seja o nexthop das rotas externas.  1.4.7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Configuração do Multicast no Backbone  É necessário configurar o roteamento multicast no roteador com o comando “ip multicast-routing”.   No PIM a configuração para o sparse mode é feita a configuração “ip pim sparse-mode” nas interfaces com os roteadores do backbone que trafegarão multicast. O Sparse mode necessita de um Rendevouz Point. Deve-se criar o RP da VRF que deve ser configurado nos PEs com o comando “ip pim rp-address ”.  Para definir o Rendezvous Point do bckbone, usa-se o comando “ip pim rp address ” ou algum modo de eleição (BSR ou Auto-RP).  1.4.8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Configuração do Multicast na VPN  Antes de configurar o PIM é necessário configurar o roteamento multicast no PE com o comando “ip multicast-routing vrf ”. No PIM a configuração para o sparse mode é feita com o comando “ip pim sparse-mode” nas interfaces com os roteadores da VPN que trafegam multicast. O Sparse mode necessita de um Rendevouz Point. A configuração de Rendevouz Point estático é feita pelo comando “ip pim vrf  rp-address ”.  Dentro das configurações de VRF deve-se adicionar o grupo multicast que será usado no backbone para o tráfego do multicast da VRF. Essa configuração é feita com “mdt default ”.  
  1.4.9&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Configurações do MSDP entre domínios  A configuração da conexão MSDP é feita entre os RPs com o comando “ip msdp peer  [remote-as ]”. Pode ser configurada a interface loopback para fechar a conexão MSDP, basta configura-la como source. O comando “ip msdp cache-sa-state” mantém em cache os grupos e fontes conhecidas.  Configura-se o comando “ip msdp rpf rfc3618” para utilizar os recursos da RFC 3618 do MSDP.  Para configurar um filtro de AS no MSDP usa-se o comando “ip msdp sa-filter   list ” a ACL tem que ser extendida. Existem recomendações da Cisco para o uso do filtro de AS que são descritas em documentação.  1.4.10&nbsp;&nbsp;&nbsp;&nbsp; Configurações do IGMP  O IGMP é configurado em todas as interfaces que estão com o multicast PIM configurado. Caso algum host conectado ao roteador enviar um trafego de “join multicast” o roteador automaticamente passará para o Source daquele grupo, caso exista.  Nesse exemplo pode-se utilizar o comando “ip igmp join-group ” para enviar uma solicitação de join no grupo multicast.  1.5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Observações e Bugs  http://cisco.biz/en/US/docs/ios/12_0s/feature/guide/fsiasmlp.html#wp1044672  1.6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Comandos Importantes de Verificação    PE1#show ip pim vrf BLUE rpGroup: 227.1.1.1, RP: 10.10.10.1, v2, uptime 00:08:24, expires neverGroup: 227.2.2.2, RP: 10.10.10.1, v2, uptime 00:03:44, expires neverGroup: 224.0.1.40, RP: 10.10.10.1, v2, uptime 00:08:26, expires never  
    PE1#show ip mroute IP Multicast Routing TableFlags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; L - Local, P - Pruned, R - RP-bit set, F - Register flag,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; T - SPT-bit set, J - Join SPT, M - MSDP created entry,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Y - Joined MDT-data group, y - Sending to MDT-data groupOutgoing interface flags: H - Hardware switched, A - Assert winner&nbsp;Timers: Uptime/Expires&nbsp;Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 224.1.2.3), 00:12:41/stopped, RP 2.2.2.2, flags: SJCFZ&nbsp; Incoming interface: FastEthernet0/0, RPF nbr 11.11.11.100&nbsp; Outgoing interface list:&nbsp;&nbsp;&nbsp; MVRF BLUE, Forward/Sparse, 00:12:40/00:02:22
(1.1.1.1, 224.1.2.3), 00:12:41/00:03:23, flags: FTZ&nbsp; Incoming interface: Loopback0, RPF nbr 0.0.0.0&nbsp; Outgoing interface list:&nbsp;&nbsp;&nbsp; FastEthernet0/0, Forward/Sparse, 00:10:10/00:02:43
(4.4.4.4, 224.1.2.3), 00:11:14/00:02:53, flags: JTZ&nbsp; Incoming interface: FastEthernet0/0, RPF nbr 11.11.11.100&nbsp; Outgoing interface list:&nbsp;&nbsp;&nbsp; MVRF BLUE, Forward/Sparse, 00:11:14/00:00:48  
    PE1#show ip mroute vrf BLUEIP Multicast Routing TableFlags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; L - Local, P - Pruned, R - RP-bit set, F - Register flag,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; T - SPT-bit set, J - Join SPT, M - MSDP created entry,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; U - URD, I - Received Source Specific Host Report, Z - Multicast Tunnel&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Y - Joined MDT-data group, y - Sending to MDT-data groupOutgoing interface flags: H - Hardware switched, A - Assert winner&nbsp;Timers: Uptime/Expires&nbsp;Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 227.2.2.2), 00:10:45/00:03:15, RP 10.10.10.1, flags: SF&nbsp; Incoming interface: FastEthernet1/0, RPF nbr 10.10.10.1&nbsp; Outgoing interface list:&nbsp;&nbsp;&nbsp; Tunnel0, Forward/Sparse, 00:10:45/00:03:15
(10.10.10.1, 227.2.2.2), 00:07:21/00:03:23, flags: FT&nbsp; Incoming interface: FastEthernet1/0, RPF nbr 0.0.0.0&nbsp; Outgoing interface list:&nbsp;&nbsp;&nbsp; Tunnel0, Forward/Sparse, 00:07:22/00:03:15    2 &nbsp;&nbsp;&nbsp;&nbsp; Configuração  2.1&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; CE1    !Hostname CE1!Ip cefIp multicast-routing!interface FastEthernet1/0&nbsp;ip address 10.10.10.1 255.255.255.0&nbsp;no shutdown&nbsp;du full&nbsp;ip pim sparse-mode&nbsp;ip igmp join-group 227.1.1.1!ip route 0.0.0.0 0.0.0.0 10.10.10.254!&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ip pim rp-address 10.10.10.1!  2.2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PE1    !Hostname PE1!ip cef!!mpls label protocol ldpno ip domain-lookup!ip vrf BLUE&nbsp;rd 1:1&nbsp;route-target export 1:1&nbsp;route-target import 1:1&nbsp;mdt default 224.1.2.3
!ip multicast-routing ip multicast-routing vrf BLUE !!interface Loopback0&nbsp;ip address 1.1.1.1 255.255.255.255&nbsp;ip pim sparse-mode!interface FastEthernet0/0&nbsp;ip address 11.11.11.1 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;no shutdown&nbsp;du full&nbsp;mpls ip!interface FastEthernet1/0&nbsp;ip vrf forwarding BLUE&nbsp;ip address 10.10.10.254 255.255.255.0&nbsp;no shutdown&nbsp;du full&nbsp;ip pim sparse-mode!router ospf 1&nbsp;router-id 1.1.1.1&nbsp;network 1.1.1.1 0.0.0.0 area 0&nbsp;network 11.11.11.1 0.0.0.0 area 0!router bgp 1&nbsp;bgp router-id 1.1.1.1&nbsp;neighbor 100.100.100.100 remote-as 1&nbsp;neighbor 100.100.100.100 update-source Loopback0&nbsp;!&nbsp;address-family ipv4&nbsp;neighbor 100.100.100.100 activate&nbsp;neighbor 100.100.100.100 send-label&nbsp;neighbor 100.100.100.100 send-community both!&nbsp;address-family vpnv4&nbsp;neighbor 100.100.100.100 activate&nbsp;neighbor 100.100.100.100 send-community both&nbsp;!&nbsp;address-family ipv4 vrf BLUE&nbsp;redistribute connected!ip pim rp-address 2.2.2.2&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ! O RP eh o ASBRip pim vrf BLUE rp-address 10.10.10.1&nbsp;&nbsp; ! O RP eh o CE!  2.3&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; P1 – Router Reflector    !Hostname P1-RR!ip cef!mpls label protocol ldpip multicast-routing !!interface Loopback0&nbsp;ip address 100.100.100.100 255.255.255.255&nbsp;ip pim sparse-mode!interface FastEthernet0/0&nbsp;ip address 12.12.12.100 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;no shutdown&nbsp;du full&nbsp;mpls ip!interface FastEthernet1/0&nbsp;ip address 11.11.11.100 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;no shutdown&nbsp;du full&nbsp;mpls ip!router ospf 1&nbsp;router-id 100.100.100.100&nbsp;network 11.11.11.100 0.0.0.0 area 0&nbsp;network 12.12.12.100 0.0.0.0 area 0&nbsp;network 100.100.100.100 0.0.0.0 area 0!router bgp 1&nbsp;bgp cluster-id 1&nbsp;bgp router-id 100.100.100.100&nbsp;no bgp default ipv4-unicast&nbsp;neighbor 1.1.1.1 remote-as 1&nbsp;neighbor 1.1.1.1 update-source Loopback0&nbsp;neighbor 2.2.2.2 remote-as 1&nbsp;neighbor 2.2.2.2 update-source Loopback0&nbsp;neighbor 200.200.200.200 remote-as 2&nbsp;neighbor 200.200.200.200 ebgp-multihop 255&nbsp;neighbor 200.200.200.200 update-source Loopback0&nbsp;!address-family ipv4&nbsp;neighbor 1.1.1.1 activate&nbsp;neighbor 1.1.1.1 send-label&nbsp;neighbor 1.1.1.1 send-community both&nbsp;neighbor 1.1.1.1 route-reflector-client&nbsp;neighbor 2.2.2.2 activate&nbsp;neighbor 2.2.2.2 send-label&nbsp;neighbor 2.2.2.2 send-community both&nbsp;neighbor 2.2.2.2 route-reflector-client&nbsp;no neighbor 200.200.200.200 activate!&nbsp;address-family vpnv4&nbsp;neighbor 1.1.1.1 activate&nbsp;neighbor 1.1.1.1 route-reflector-client&nbsp;neighbor 1.1.1.1 send-community both&nbsp;neighbor 200.200.200.200 activate&nbsp;neighbor 200.200.200.200 next-hop-unchanged&nbsp;neighbor 200.200.200.200 send-community both!ip pim rp-address 2.2.2.2!  2.4&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PE2 – ASBR    !Hostname PE2-ASBR!mpls label protocol ldpip cef!ip multicast-routing !!interface Loopback0&nbsp;ip address 2.2.2.2 255.255.255.255&nbsp;ip pim sparse-mode!interface FastEthernet0/0&nbsp;ip address 23.23.23.2 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;no shutdown&nbsp;du full&nbsp;no ip mroute-cache&nbsp;no ip route-cache&nbsp;mpls bgp forwarding!interface FastEthernet1/0&nbsp;ip address 12.12.12.2 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;mpls ip&nbsp;no shutdown&nbsp;du full&nbsp;no ip mroute-cache&nbsp;no ip route-cache!router ospf 1&nbsp;router-id 2.2.2.2&nbsp;redistribute bgp 1 subnets route-map bgp2ospf&nbsp;network 2.2.2.2 0.0.0.0 area 0&nbsp;network 12.12.12.2 0.0.0.0 area 0&nbsp;network 23.23.23.2 0.0.0.0 area 0&nbsp;passive-interface FastEthernet0/0!router bgp 1&nbsp;bgp router-id 2.2.2.2&nbsp;neighbor 23.23.23.3 remote-as 2&nbsp;neighbor 100.100.100.100 remote-as 1&nbsp;neighbor 100.100.100.100 update-source lo0&nbsp;!&nbsp;address-family ipv4&nbsp;neighbor 100.100.100.100 activate&nbsp;neighbor 100.100.100.100 send-label&nbsp;neighbor 100.100.100.100 next-hop-self&nbsp;neighbor 23.23.23.3 activate&nbsp;neighbor 23.23.23.3 send-label&nbsp;neighbor 23.23.23.3 route-map LABEL-IN in &nbsp;neighbor 23.23.23.3 route-map LABEL-OUT out &nbsp;network 100.100.100.100 mask 255.255.255.255&nbsp;network 1.1.1.1 mask 255.255.255.255!ip pim rp-address 2.2.2.2ip msdp peer 23.23.23.3ip msdp cache-sa-state!!access-list 1 permit 1.1.1.1 log&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ! IP Loopback PE1access-list 2 permit 4.4.4.4 log&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ! IP Loopback PE2access-list 3 permit 100.100.100.100 log&nbsp;&nbsp;&nbsp; ! IP Loopback P1 RRaccess-list 4 permit 200.200.200.200 log&nbsp;&nbsp;&nbsp; ! IP Loopback P2 RR!!route-map LABEL-IN permit 10&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ! aceita rotas com label do PE2 do AS 2&nbsp;match ip address 2&nbsp;match mpls-label!route-map LABEL-IN permit 11&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;! aceita rotas do RR do AS 2&nbsp;match ip address 4!!route-map LABEL-OUT permit 12&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ! envia rotas do RR local&nbsp;match ip address 3!route-map LABEL-OUT permit 13&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ! envia rotas do PE1 com label&nbsp;match ip address 1&nbsp;set mpls-label!  2.5&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PE3 – ASBR    !Hostname PE3-ASBR!ip cef!mpls label protocol ldpip multicast-routing !interface Loopback0&nbsp;ip address 3.3.3.3 255.255.255.255&nbsp;ip router isis !interface FastEthernet0/0&nbsp;ip address 32.32.32.3 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;ip router isis &nbsp;no ip mroute-cache&nbsp;no ip route-cache&nbsp;no shutdown&nbsp;du full&nbsp;mpls ip!interface FastEthernet1/0&nbsp;ip address 23.23.23.3 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;no ip mroute-cache&nbsp;no ip route-cache&nbsp;ip router isis&nbsp;no shutdown&nbsp;du full&nbsp;mpls bgp forwarding!router isis &nbsp;net 49.0001.3333.3333.3333.00&nbsp;is-type level-2-only&nbsp;passive-interface FastEthernet1/0!router bgp 2&nbsp;bgp router-id 3.3.3.3&nbsp;neighbor 23.23.23.2 remote-as 1&nbsp;neighbor 200.200.200.200 remote-as 2&nbsp;neighbor 200.200.200.200 update-source lo0&nbsp;!&nbsp;address-family ipv4&nbsp;neighbor 200.200.200.200 activate&nbsp;neighbor 200.200.200.200 send-label&nbsp;neighbor 200.200.200.200 next-hop-self&nbsp;neighbor 23.23.23.2 activate&nbsp;neighbor 23.23.23.2 send-label&nbsp;neighbor 23.23.23.2 route-map LABEL-IN in &nbsp;neighbor 23.23.23.2 route-map LABEL-OUT out &nbsp;network 4.4.4.4 mask 255.255.255.255&nbsp;network 200.200.200.200 mask 255.255.255.255!&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ip pim rp-address 3.3.3.3ip msdp peer 23.23.23.2ip msdp cache-sa-state!!access-list 1 permit 1.1.1.1 log&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ! IP Loopback PE1access-list 2 permit 4.4.4.4 log&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ! IP Loopback PE2access-list 3 permit 100.100.100.100 log&nbsp;&nbsp;&nbsp; ! IP Loopback P1 RRaccess-list 4 permit 200.200.200.200 log&nbsp;&nbsp;&nbsp; ! IP Loopback P2 RR!!route-map LABEL-IN permit 10&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;! aceita rotas com label do PE1 do AS 1&nbsp;match ip address 1&nbsp;match mpls-label!route-map LABEL-IN permit 11&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;! aceita rotas do RR do AS 1&nbsp;match ip address 3!!route-map LABEL-OUT permit 12&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ! envia rotas do RR local&nbsp;match ip address 4!route-map LABEL-OUT permit 13&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ! envia rotas do PE1 com label&nbsp;match ip address 2&nbsp;set mpls-label!  2.6&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; P2 – Router Reflector    !Hostname P2-RR!ip cef!mpls label protocol ldpip multicast-routing!!interface Loopback0&nbsp;ip address 200.200.200.200 255.255.255.255&nbsp;ip pim sparse-mode&nbsp;ip router isis!interface FastEthernet0/0&nbsp;ip address 24.24.24.200 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;ip router isis &nbsp;no shutdown&nbsp;du full&nbsp;mpls ip!interface FastEthernet1/0&nbsp;ip address 32.32.32.200 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;ip router isis &nbsp;no shutdown&nbsp;du full&nbsp;mpls ip!router isis &nbsp;net 49.0001.2222.2222.2222.00&nbsp;is-type level-2-only!router bgp 2&nbsp;bgp router-id 200.200.200.200&nbsp;neighbor 4.4.4.4 remote-as 2&nbsp;neighbor 4.4.4.4 update-source Loopback0&nbsp;neighbor 3.3.3.3 remote-as 2&nbsp;neighbor 3.3.3.3 update-source Loopback0&nbsp;neighbor 100.100.100.100 remote-as 1&nbsp;neighbor 100.100.100.100 ebgp-multihop 255&nbsp;neighbor 100.100.100.100 update-source Loopback0&nbsp;!&nbsp;address-family ipv4&nbsp;neighbor 4.4.4.4 activate&nbsp;neighbor 4.4.4.4 send-label&nbsp;neighbor 4.4.4.4 route-reflector-client&nbsp;neighbor 4.4.4.4 send-community extended&nbsp;neighbor 3.3.3.3 activate&nbsp;neighbor 3.3.3.3 send-label&nbsp;neighbor 3.3.3.3 route-reflector-client&nbsp;neighbor 3.3.3.3 send-community extended&nbsp;no neighbor 100.100.100.100 activate&nbsp;!&nbsp;address-family vpnv4&nbsp;neighbor 4.4.4.4 activate&nbsp;neighbor 4.4.4.4 route-reflector-client&nbsp;neighbor 4.4.4.4 send-community both&nbsp;neighbor 100.100.100.100 activate&nbsp;neighbor 100.100.100.100 next-hop-unchanged&nbsp;neighbor 100.100.100.100 send-community both!ip pim rp-address 3.3.3.3!  2.7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; PE4    !Hostname PE4!ip cef!mpls label protocol ldpip vrf BLUE&nbsp;rd 1:1&nbsp;route-target export 1:1&nbsp;route-target import 1:1&nbsp;mdt default 224.1.2.3!ip multicast-routing ip multicast-routing vrf BLUE !!interface Loopback0&nbsp;ip address 4.4.4.4 255.255.255.255&nbsp;ip pim sparse-mode&nbsp;ip router isis !interface FastEthernet0/0&nbsp;ip vrf forwarding BLUE&nbsp;ip address 20.20.20.254 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;no shutdown&nbsp;du full!interface FastEthernet1/0&nbsp;ip address 24.24.24.4 255.255.255.0&nbsp;ip pim sparse-mode&nbsp;ip router isis &nbsp;mpls ip&nbsp;no shutdown&nbsp;du full!router isis &nbsp;net 49.0001.4444.4444.4444.00&nbsp;is-type level-2-only!router bgp 2&nbsp;bgp router-id 4.4.4.4&nbsp;neighbor 200.200.200.200 remote-as 2&nbsp;neighbor 200.200.200.200 update-source Loopback0&nbsp;!&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;address-family ipv4&nbsp;neighbor 200.200.200.200 activate&nbsp;neighbor 200.200.200.200 send-label&nbsp;neighbor 200.200.200.200 send-community both&nbsp;!&nbsp;address-family vpnv4&nbsp;neighbor 200.200.200.200 activate&nbsp;neighbor 200.200.200.200 send-community both!&nbsp;address-family ipv4 vrf BLUE&nbsp;redistribute connected!ip pim rp-address 3.3.3.3ip pim vrf BLUE rp-address 10.10.10.1&nbsp;&nbsp; ! O RP eh o CE!  2.8&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; CE2    !Hostname CE2!interface FastEthernet1/0&nbsp;ip address 20.20.20.2 255.255.255.0&nbsp;no shutdown&nbsp;du full&nbsp;ip pim sparse-mode&nbsp;ip igmp join-group 227.2.2.2!ip route 0.0.0.0 0.0.0.0 20.20.20.254!ip pim rp-address 10.10.10.1!