MBGP基本功能示例

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组网需求

  1. 接收者通过组播方式接收视频点播信息，接受者与组播源位于不同的自治系统
  2. 需要在自治系统之间传输组播路由信息

组网拓扑

配置思路

  1. 配置路由基本功能以及各个接口IP地址
  2. 配置MBGP对等体，建立域间组播路由
  3. 配置MBGP要发布的路由
  4. 使能各路由的组播地址
  5. 在各个AS内部部署PIM-SM基本功能，在主机侧接口使能IGMP功能
  6. 在域间相连接口上配置BSR服务边界
  7. 配置MSDP对等体，实现传输域间组播源信息的需求

配置命令

  1. 配置各个路由基本功能以及各个接口IP地址

    • Router A配置

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      sys
      sys Router A
      int g0/0/0
        ip add  10.1.1.1 30
      int g0/0/1
        ip add 10.10.10.1 30
      int LoopBack 0
        ip add 1.1.1.1 32

  • Router B配置

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    sys
    sys Router B
    int g0/0/0
      ip add 10.1.1.2 30
    int g0/0/1
      ip add 10.3.1.2 30
    int g0/0/2
      ip add 10.2.1.2 30
    int LoopBack 0
      ip add 2.2.2.2 32

  • Router C配置

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    sys Router C
    int g0/0/0
      ip add 10.4.1.1 30
    int g0/0/1
      ip add 10.168.1.1 30
    int g0/0/2
      ip add 10.2.1.1 30
    int LoopBack 0
      ip add 3.3.3.3 32

  • Router D配置

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    sys
    sys Router D
    int g0/0/0
      ip add 10.4.1.2 30
    int g0/0/1
      ip add 10.3.1.1 30
    int LoopBack 0
      ip add 4.4.4.4 32

  1. AS内配置OSPF协议

    • Router B配置

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      sys
      ospf 1 router-id 2.2.2.2
        area 0
          network 2.2.2.2 0.0.0.0
          network 10.2.1.0 0.0.0.3
          network 10.3.1.0 0.0.0.3

  • Router C配置

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    sys
    ospf 1 router-id 3.3.3.3
      area 0
        network 3.3.3.3 0.0.0.0
        network 10.2.1.0 0.0.0.3
        network 10.4.1.0 0.0.0.3
        network 10.168.1.0 0.0.0.3

  • Router D配置

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    sys
    ospf 1 router-id 4.4.4.4
      area 0
        network 4.4.4.4 0.0.0.0
        network 10.3.1.0 0.0.0.3
        network 10.4.1.0 0.0.0.3

  1. AS之间配置BGP并启动MBGP

    • Router A配置

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      bgp 100
        peer 10.1.1.2 as-number 200
        
        ipv4-family multicast
           peer 10.1.1.2 enable
           q
         q

  • Router B配置

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    bgp 200
      peer 10.1.1.1 as-number 100
      peer 10.2.1.1 as-number 200
      peer 10.3.1.1 as-number 200
      
      ipv4-family multicast
        peer 10.1.1.1 enable
        peer 10.2.1.1 enable
        peer 10.3.1.1 enable
        q
      q

  • Router C配置

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    sys
    bgp 200
      peer 10.2.1.2 as-number 200
      peer 10.4.1.2 as-number 200
      
      ipv4-family multicast
        peer 10.2.1.2 enable
        peer 10.4.1.2 enable
        q
      q

  • Router D配置

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    bgp 200
      peer 10.3.1.2 as-number 200
      peer 10.4.1.1 as-number 200
      
      ipv4-family multicast
        peer 10.3.1.2 enable
        peer 10.4.1.1 enable

  1. 配置要发布的路由

    • Router A配置

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      bgp 100
        import-route direct
        
        ipv4-family multicast
          import-route direct
          q
        q

  • Router B配置

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    bgp 200
      import-route direct
      import-route ospf 1
      
      ipv4-family multicast
        import-route direct
        import-route ospf 1
        q
      q

  • Router C配置

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    sys
    bgp 200
      import-route direct
      
      ipv4-family multicast
        import-route direct
        import-route ospf 1
        q
      q

  • Router D配置

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    sys
    bgp 200
      import-route direct
      
      ipv4-family multicast
        import-route direct
        import-route ospf 1
        q
      q

  1. 使能各个路由器以及各个接口的组播功能

    • Router A配置

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      multicast routind-enable

      int g0/0/0
        pim sm
        q
      int g0/0/1
        pim sm
        q

  • Router B配置

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    sys
    multicast routing-table

    int g0/0/0
      pim sm
      q
    int g0/0/1
      pim sm
      q
    int g0/0/2
      pim sm
      q

  • Router C配置

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    sys
    multicast routing-enable

    int g0/0/0
      pim sm
      q
    int g0/0/1
      pim sm
      q
    int g0/0/2
      pim sm
      q

  • Router D配置

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    sys
    multicast routing-enable

    int g0/0/0
      pim sm
      q
    int g0/0/1
      pim sm
      q

  1. AS内部配置BSR和RP

    • Router A配置

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      int LoopBack 0
        pim sm
        q
      pim
        c-bsr loopback 0
        c-rp loopback 0
        q

  • Router B配置

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    int LoopBack 0
      pim sm
      q
    pim
      c-bsr loopback 0
      c-rp loopback 0

  1. 在PIM域间相连接口上配置BSR边界

    • Router A配置

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      int g0/0/0
        pim bsr-boundary
        q

  • Router B配置

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    int g0/0/1
      pim bsr-boundary
      q

  1. 配置MSDP对等体

    • Router A配置

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      sys
      msdp
        peer 10.1.1.2 connect-interface g0/0/0
        q

  • Router B配置

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    sys
    msdp
      peer 10.1.1.1 connect-interface g0/0/0
      q

结果检查

  1. 查看MBGP对等体关系

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    dis bgp multicast peer

    <Router A>dis bgp multicast peer

     BGP local router ID : 1.1.1.1
     Local AS number : 100
     Total number of peers : 1		  Peers in established state : 1

      Peer            V          AS  MsgRcvd  MsgSent  OutQ  Up/Down       State Pre
    fRcv

      10.1.1.2        4         200      110       97     0 01:28:01 Established    
       8

  1. 查看MSDP对等体关系

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    dis msdp brief

    <Router B>dis msdp brief 
    MSDP Peer Brief Information of VPN-Instance: public net
      Configured   Up           Listen       Connect      Shutdown     Down
      1            1            0            0            0            0            

      Peer's Address   State     Up/Down time    AS          SA Count   Reset Count
      10.1.1.1         Up        01:29:01        100         0          0
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