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NE20E-S V800R012C00SPC300 配置指南 - 局域网与城域网接入 04
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配置QinQ终结子接口接入L2VPN示例

配置QinQ终结子接口接入L2VPN示例

从典型的应用场景描述了QinQ终结子接口接入L2VPN（Layer 2 virtual private network）后，如何保证发送带有两层VLAN Tag报文的终端用户通过L2VPN网络通信。

组网需求

如果通过终结子接口接入L2VPN网络，为了保证用户之间互通，需要配置终结子接口绑定VSI（Virtual Switching Instance）/VPWS（Virtual Private Wire Service）接入L2VPN网络。

如图8-22所示，CE通过路由器接入PE，路由器发送到PE的用户报文带有两层VLAN Tag，并通过QinQ终结子接口接入L2VPN用户网络。为了保证CE1～CE6的用户网络可以互通，需要在PE1、PE2、PE3上部署QinQ终结子接口绑定VSI/L2VC接入L2VPN网络。

图8-22 配置QinQ终结子接口接入L2VPN组网图

本例中interface1，interface2，interface3，subinterface1.1分别代表GE0/1/1，GE0/1/2，GE0/1/3，GE0/1/1.1。



注意事项

L2VPN包括VPWS和VPLS。

  • VPWS

    VPWS（Virtual Private Wire Service）是使用IP网络对传统租用线业务的模拟和仿真技术。它提供了非对称、低成本的DDN（Digital Data Network）业务。从虚拟租用线两端的用户来看，该虚拟租用线近似于传统的租用线。VPWS技术是一种点到点的虚拟专线技术，能够支持几乎所有的链路层协议。

  • VPLS

    VPLS可以实现多点到多点的VPN组网，利用VPLS技术，服务提供商可以通过MPLS骨干网向用户提供基于以太的多点业务。

本示例以VPLS组网为例说明QinQ终结子接口如何接入L2VPN网络，实现CE间互通。如果L2VPN网络是VPWS网络时，只有PE的用户侧子接口配置不同，需要配置QinQ终结子接口绑定L2VC接入L2VPN网络，其他设备配置相同。

配置思路

采用如下的思路配置QinQ终结子接口接入L2VPN：

  1. 分别在CE上配置二层转发功能，使得CE发往路由器的报文带有一层VLAN Tag。

  2. 分别在路由器上配置QinQ功能和二层转发功能，使得路由器发往PE的报文带有两层VLAN Tag。

  3. 分别在PE上配置VPLS、QinQ终结子接口，将VSI与QinQ终结子接口绑定，实现用户通过VPLS网络通信。

    1. 分别在PE上配置路由协议，保证网络三层互通。

      本示例以OSPF（Open Shortest Path First）为例。

    2. 分别在PE上配置MPLS（Multiprotocol Label Switching）基本能力和MPLS LDP（Label Distribution Protocol），建立MPLS LSP（Label Switched Path）。
    3. 分别在PE上使能MPLS L2VPN，全局使能设备L2VPN功能。
    4. 分别在PE上配置VSI和QinQ终结子接口，并将VSI与QinQ终结子接口绑定，实现QinQ终结子接口接入L2VPN。

数据准备

为完成此配置例，需准备如下的数据：

  • 用户所属的VLAN ID、用户的IP地址。
  • 路由器发往PE的报文外层VLAN Tag值。
  • 路由器与CE连接的接口名称、PE与路由器连接的接口名称、PE之间连接的接口名称和IP地址。
  • PE上的VSI ID（必须一致）、MPLS LSR-ID、VSI名称及绑定VSI的接口。

操作步骤

  1. 在CE上配置二层转发功能

    # 配置CE1。

    <HUAWEI> system-view
    [~HUAWEI] sysname CE1
    [*HUAWEI] commit
    [~CE1] vlan 10
    [*CE1-vlan10] quit
    [*CE1] interface gigabitethernet 0/1/1
    [*CE1-GigabitEthernet0/1/1] undo shutdown
    [*CE1-GigabitEthernet0/1/1] quit
    [*CE1] interface gigabitethernet 0/1/1.1
    [*CE1-GigabitEthernet0/1/1.1] ip address 10.1.1.1 24
    [*CE1-GigabitEthernet0/1/1.1] vlan-type dot1q 10
    [*CE1-GigabitEthernet0/1/1.1] quit
    [*CE1] commit

    # 配置CE2。

    <HUAWEI> system-view
    [~HUAWEI] sysname CE2
    [*HUAWEI] commit
    [~CE2] vlan 10
    [*CE2-vlan10] quit
    [*CE2] interface gigabitethernet 0/1/1
    [*CE2-GigabitEthernet0/1/1] undo shutdown
    [*CE2-GigabitEthernet0/1/1] quit
    [*CE2] interface gigabitethernet 0/1/1.1
    [*CE2-GigabitEthernet0/1/1.1] ip address 10.1.1.2 24
    [*CE2-GigabitEthernet0/1/1.1] vlan-type dot1q 10
    [*CE2-GigabitEthernet0/1/1.1] quit
    [*CE2] commit

    # 配置CE3。

    <HUAWEI> system-view
    [~HUAWEI] sysname CE3
    [*HUAWEI] commit
    [~CE3] vlan 10
    [*CE3-vlan10] quit
    [*CE3] interface gigabitethernet 0/1/1
    [*CE3-GigabitEthernet0/1/1] undo shutdown
    [*CE3-GigabitEthernet0/1/1] quit
    [*CE3] interface gigabitethernet 0/1/1.1
    [*CE3-GigabitEthernet0/1/1.1] ip address 10.1.1.3 24
    [*CE3-GigabitEthernet0/1/1.1] vlan-type dot1q 10
    [*CE3-GigabitEthernet0/1/1.1] quit
    [*CE3] commit

    # 配置CE4。

    <HUAWEI> system-view
    [~HUAWEI] sysname CE4
    [*HUAWEI] commit
    [~CE4] vlan 20
    [*CE4-vlan20] quit
    [*CE4] interface gigabitethernet 0/1/1
    [*CE4-GigabitEthernet0/1/1] undo shutdown
    [*CE4-GigabitEthernet0/1/1] quit
    [*CE4] interface gigabitethernet 0/1/1.1
    [*CE4-GigabitEthernet0/1/1.1] ip address 10.2.1.1 24
    [*CE4-GigabitEthernet0/1/1.1] vlan-type dot1q 20
    [*CE4-GigabitEthernet0/1/1.1] quit
    [*CE4] commit

    # 配置CE5。

    <HUAWEI> system-view
    [~HUAWEI] sysname CE5
    [*HUAWEI] commit
    [~CE5] vlan 20
    [*CE5-vlan20] quit
    [*CE5] interface gigabitethernet 0/1/1
    [*CE5-GigabitEthernet0/1/1] undo shutdown
    [*CE5-GigabitEthernet0/1/1] quit
    [*CE5] interface gigabitethernet 0/1/1.1
    [*CE5-GigabitEthernet0/1/1.1] ip address 10.2.1.2 24
    [*CE5-GigabitEthernet0/1/1.1] vlan-type dot1q 20
    [*CE5-GigabitEthernet0/1/1.1] quit
    [*CE5] commit

    # 配置CE6。

    <HUAWEI> system-view
    [~HUAWEI] sysname CE6
    [*HUAWEI] commit
    [~CE6] vlan 20
    [*CE6-vlan20] quit
    [*CE6] interface gigabitethernet 0/1/1
    [*CE6-GigabitEthernet0/1/1] undo shutdown
    [*CE6-GigabitEthernet0/1/1] quit
    [*CE6] interface gigabitethernet 0/1/1.1
    [*CE6-GigabitEthernet0/1/1.1] ip address 10.2.1.3 24
    [*CE6-GigabitEthernet0/1/1.1] vlan-type dot1q 20
    [*CE6-GigabitEthernet0/1/1.1] quit
    [*CE6] commit

  2. 在路由器上配置QinQ功能和二层转发功能

    # 配置DeviceA。

    <HUAWEI> system-view
    [~HUAWEI] sysname DeviceA
    [*HUAWEI] commit
    [~DeviceA] vlan 100
    [*DeviceA-vlan100] quit
    [*DeviceA] interface gigabitethernet 0/1/1
    [*DeviceA-GigabitEthernet0/1/1] undo shutdown
    [*DeviceA-GigabitEthernet0/1/1] portswitch
    [*DeviceA-GigabitEthernet0/1/1] port vlan-stacking vlan 10 stack-vlan 100
    [*DeviceA-GigabitEthernet0/1/1] quit
    [*DeviceA] interface gigabitethernet 0/1/2
    [*DeviceA-GigabitEthernet0/1/2] undo shutdown
    [*DeviceA-GigabitEthernet0/1/2] portswitch
    [*DeviceA-GigabitEthernet0/1/2] port vlan-stacking vlan 20 stack-vlan 100
    [*DeviceA-GigabitEthernet0/1/2] quit
    [*DeviceA] interface gigabitethernet 0/1/3
    [*DeviceA-GigabitEthernet0/1/3] undo shutdown
    [*DeviceA-GigabitEthernet0/1/3] portswitch
    [*DeviceA-GigabitEthernet0/1/3] port link-type trunk
    [*DeviceA-GigabitEthernet0/1/3] port trunk allow-pass vlan 100
    [*DeviceA-GigabitEthernet0/1/3] quit
    [*DeviceA] commit

    # 配置DeviceB。

    <HUAWEI> system-view
    [~HUAWEI] sysname DeviceB
    [*HUAWEI] commit
    [~DeviceB] vlan 100
    [*DeviceB-vlan100] quit
    [*DeviceB] interface gigabitethernet 0/1/1
    [*DeviceB-GigabitEthernet0/1/1] undo shutdown
    [*DeviceB-GigabitEthernet0/1/1] portswitch
    [*DeviceB-GigabitEthernet0/1/1] port vlan-stacking vlan 10 stack-vlan 100
    [*DeviceB-GigabitEthernet0/1/1] quit
    [*DeviceB] interface gigabitethernet 0/1/2
    [*DeviceB-GigabitEthernet0/1/2] undo shutdown
    [*DeviceB-GigabitEthernet0/1/2] portswitch
    [*DeviceB-GigabitEthernet0/1/2] port vlan-stacking vlan 20 stack-vlan 100
    [*DeviceB-GigabitEthernet0/1/2] quit
    [*DeviceB] interface gigabitethernet 0/1/3
    [*DeviceB-GigabitEthernet0/1/3] undo shutdown
    [*DeviceB-GigabitEthernet0/1/3] portswitch
    [*DeviceB-GigabitEthernet0/1/3] port link-type trunk
    [*DeviceB-GigabitEthernet0/1/3] port trunk allow-pass vlan 100
    [*DeviceB-GigabitEthernet0/1/3] quit
    [*DeviceB] commit

    # 配置DeviceC。

    <HUAWEI> system-view
    [~HUAWEI] sysname DeviceC
    [*HUAWEI] commit
    [~DeviceC] vlan 100
    [*DeviceC-vlan100] quit
    [*DeviceC] interface gigabitethernet 0/1/1
    [*DeviceC-GigabitEthernet0/1/1] undo shutdown
    [*DeviceC-GigabitEthernet0/1/1] portswitch
    [*DeviceC-GigabitEthernet0/1/1] port vlan-stacking vlan 10 stack-vlan 100
    [*DeviceC-GigabitEthernet0/1/1] quit
    [*DeviceC] interface gigabitethernet 0/1/2
    [*DeviceC-GigabitEthernet0/1/2] undo shutdown
    [*DeviceC-GigabitEthernet0/1/2] portswitch
    [*DeviceC-GigabitEthernet0/1/2] port vlan-stacking vlan 20 stack-vlan 100
    [*DeviceC-GigabitEthernet0/1/2] quit
    [*DeviceC] interface gigabitethernet 0/1/3
    [*DeviceC-GigabitEthernet0/1/3] undo shutdown
    [*DeviceC-GigabitEthernet0/1/3] portswitch
    [*DeviceC-GigabitEthernet0/1/3] port link-type trunk
    [*DeviceC-GigabitEthernet0/1/3] port trunk allow-pass vlan 100
    [*DeviceC-GigabitEthernet0/1/3] quit
    [*DeviceC] commit

    如果设备不支持port vlan-stacking命令，也可以在接口上使用命令port link-type dot1q-tunnel和port default vlan来配置QinQ功能。

  3. 配置VPLS

    1. 分别在PE上配置OSPF协议。

      配置PE的各接口地址。配置OSPF时，注意需要发布PE的32位Loopback接口地址。

      # 配置PE1。

      <HUAWEI> system-view
      [~HUAWEI] sysname PE1
      [*HUAWEI] commit
      [~PE1] interface loopback 1
      [*PE1-LoopBack1] ip address 1.1.1.9 32
      [*PE1-LoopBack1] quit
      [*PE1] interface gigabitethernet 0/1/2
      [*PE1-GigabitEthernet0/1/2] ip address 192.168.1.1 24
      [*PE1-GigabitEthernet0/1/2] undo shutdown
      [*PE1-GigabitEthernet0/1/2] quit
      [*PE1] interface gigabitethernet 0/1/3
      [*PE1-GigabitEthernet0/1/3] ip address 192.168.3.1 24
      [*PE1-GigabitEthernet0/1/3] undo shutdown
      [*PE1-GigabitEthernet0/1/3] quit
      [*PE1] ospf
      [*PE1-ospf-1] area 0
      [*PE1-ospf-1-area-0.0.0.0] network 1.1.1.9 0.0.0.0
      [*PE1-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
      [*PE1-ospf-1-area-0.0.0.0] network 192.168.3.0 0.0.0.255
      [*PE1-ospf-1-area-0.0.0.0] quit
      [*PE1-ospf-1] quit
      [*PE1] commit

      # 配置PE2。

      <HUAWEI> system-view
      [~HUAWEI] sysname PE2
      [*HUAWEI] commit
      [~PE2] interface LoopBack 1
      [*PE2-LoopBack1] ip address 2.2.2.9 32
      [*PE2-LoopBack1] quit
      [*PE2] interface gigabitethernet 0/1/2
      [*PE2-GigabitEthernet0/1/2] ip address 192.168.2.2 24
      [*PE2-GigabitEthernet0/1/2] undo shutdown
      [*PE2-GigabitEthernet0/1/2] quit
      [*PE2] interface gigabitethernet 0/1/3
      [*PE2-GigabitEthernet0/1/3] ip address 192.168.3.2 24
      [*PE2-GigabitEthernet0/1/3] undo shutdown
      [*PE2-GigabitEthernet0/1/3] quit
      [*PE2] ospf
      [*PE2-ospf-1] area 0
      [*PE2-ospf-1-area-0.0.0.0] network 2.2.2.9 0.0.0.0
      [*PE2-ospf-1-area-0.0.0.0] network 192.168.2.0 0.0.0.255
      [*PE2-ospf-1-area-0.0.0.0] network 192.168.3.0 0.0.0.255
      [*PE2-ospf-1-area-0.0.0.0] quit
      [*PE2-ospf-1] quit
      [*PE2] commit

      # 配置PE3。

      <HUAWEI> system-view
      [~HUAWEI] sysname PE3
      [*HUAWEI] commit
      [~PE3] interface loopback 1
      [*PE3-LoopBack1] ip address 3.3.3.9 32
      [*PE3-LoopBack1] quit
      [*PE3] interface gigabitethernet 0/1/2
      [*PE3-GigabitEthernet0/1/2] ip address 192.168.1.2 24
      [*PE3-GigabitEthernet0/1/2] undo shutdown
      [*PE3-GigabitEthernet0/1/2] quit
      [*PE3] interface gigabitethernet 0/1/3
      [*PE3-GigabitEthernet0/1/3] ip address 192.168.2.1 24
      [*PE3-GigabitEthernet0/1/3] undo shutdown
      [*PE3-GigabitEthernet0/1/3] quit
      [*PE3] ospf
      [*PE3-ospf-1] area 0
      [*PE3-ospf-1-area-0.0.0.0] network 3.3.3.9 0.0.0.0
      [*PE3-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
      [*PE3-ospf-1-area-0.0.0.0] network 192.168.2.0 0.0.0.255
      [*PE3-ospf-1-area-0.0.0.0] quit
      [*PE3-ospf-1] quit
      [*PE3] commit

      完成上述步骤后，PE1和PE2、PE1和PE3之间通过OSPF协议发现的对方Loopback1的IP路由，并能互相Ping通。

      以PE1的显示为例。

      [~PE1] display ip routing-table
      Route Flags: R - relay, D - download to fib, T - to vpn-instance, B - black hole route
------------------------------------------------------------------------------
Routing Table : _public_
         Destinations : 14       Routes : 14

Destination/Mask    Proto  Pre  Cost        Flags NextHop         Interface

        1.1.1.9/32  Direct 0    0             D  127.0.0.1       LoopBack1
        2.2.2.9/32  OSPF   10   1             D  192.168.3.2     GigabitEthernet0/1/3
        3.3.3.9/32  OSPF   10   1             D  192.168.1.2     GigabitEthernet0/1/2
    192.168.1.0/24  Direct 0    0             D  192.168.1.1     GigabitEthernet0/1/2
    192.168.1.1/32  Direct 0    0             D  127.0.0.1       GigabitEthernet0/1/2
  192.168.1.255/32  Direct 0    0             D  127.0.0.1       GigabitEthernet0/1/2
    192.168.2.0/24  OSPF   10   2             D  192.168.3.2     GigabitEthernet0/1/3
                    OSPF   10   2             D  192.168.1.2     GigabitEthernet0/1/2
    192.168.3.0/24  Direct 0    0             D  192.168.3.1     GigabitEthernet0/1/3
    192.168.3.1/32  Direct 0    0             D  127.0.0.1       GigabitEthernet0/1/3
  192.168.3.255/32  Direct 0    0             D  127.0.0.1       GigabitEthernet0/1/3
       127.0.0.0/8  Direct 0    0             D  127.0.0.1       InLoopBack0
      127.0.0.1/32  Direct 0    0             D  127.0.0.1       InLoopBack0
127.255.255.255/32  Direct 0    0             D  127.0.0.1       InLoopBack0
255.255.255.255/32  Direct 0    0             D  127.0.0.1       InLoopBack0
      [*PE1] ping 192.168.2.2
        PING 192.168.2.2: 56  data bytes, press CTRL_C to break
    Reply from 192.168.2.2: bytes=56 Sequence=1 ttl=254 time=6 ms
    Reply from 192.168.2.2: bytes=56 Sequence=2 ttl=254 time=2 ms
    Reply from 192.168.2.2: bytes=56 Sequence=3 ttl=254 time=1 ms
    Reply from 192.168.2.2: bytes=56 Sequence=4 ttl=254 time=2 ms
    Reply from 192.168.2.2: bytes=56 Sequence=5 ttl=254 time=1 ms

  --- 192.168.2.2 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 1/2/6 ms

    2. 使能MPLS基本能力和LDP。

      # 配置PE1。

      [*PE1] mpls lsr-id 1.1.1.9
      [*PE1] mpls
      [*PE1-mpls] quit
      [*PE1] mpls ldp
      [*PE1-mpls-ldp] quit
      [*PE1] interface gigabitethernet 0/1/2
      [*PE1-GigabitEthernet0/1/2] mpls
      [*PE1-GigabitEthernet0/1/2] mpls ldp
      [*PE1-GigabitEthernet0/1/2] quit
      [*PE1] interface gigabitethernet 0/1/3
      [*PE1-GigabitEthernet0/1/3] mpls
      [*PE1-GigabitEthernet0/1/3] mpls ldp
      [*PE1-GigabitEthernet0/1/3] quit
      [*PE1] commit

      # 配置PE2。

      [~PE2] mpls lsr-id 2.2.2.9
      [*PE2] mpls
      [*PE2-mpls] quit
      [*PE2] mpls ldp
      [*PE2-mpls-ldp] quit
      [*PE2] interface gigabitethernet0/1/2
      [*PE2-GigabitEthernet0/1/2] mpls
      [*PE2-GigabitEthernet0/1/2] mpls ldp
      [*PE2-GigabitEthernet0/1/2] quit
      [*PE2] interface gigabitethernet0/1/3
      [*PE2-GigabitEthernet0/1/3] mpls
      [*PE2-GigabitEthernet0/1/3] mpls ldp
      [*PE2-GigabitEthernet0/1/3] quit
      [*PE2] commit

      # 配置PE3。

      [~PE3] mpls lsr-id 3.3.3.9
      [*PE3] mpls
      [*PE3-mpls] quit
      [*PE3] mpls ldp
      [*PE3-mpls-ldp] quit
      [*PE3] interface gigabitethernet 0/1/2
      [*PE3-GigabitEthernet0/1/2] mpls
      [*PE3-GigabitEthernet0/1/2] mpls ldp
      [*PE3-GigabitEthernet0/1/2] quit
      [*PE3] interface gigabitethernet 0/1/3
      [*PE3-GigabitEthernet0/1/3] mpls
      [*PE3-GigabitEthernet0/1/3] mpls ldp
      [*PE3-GigabitEthernet0/1/3] quit
      [*PE3] commit

      上述配置完成后，PE1与PE2、PE1与PE3之间建立LDP会话，执行命令display mpls ldp session可以看到显示结果中Status项为“Operational”。

      以PE1的显示为例。

      [~PE1] display mpls ldp session
       LDP Session(s) in Public Network
 Codes: LAM(Label Advertisement Mode), SsnAge Unit(DDDD:HH:MM)
 An asterisk (*) before a session means the session is being deleted.
--------------------------------------------------------------------------
 PeerID             Status       LAM  SsnRole  SsnAge       KASent/Rcv
--------------------------------------------------------------------------
 2.2.2.9:0          Operational  DU   Passive  0000:00:01   6/6
 3.3.3.9:0          Operational  DU   Passive  0000:00:00   1/1
--------------------------------------------------------------------------
TOTAL: 2 Session(s) Found.

      如果PE之间非直连，还需要使用mpls ldp remote-peer和remote-ip命令，在PE之间建立远端LDP会话。

    3. 使能MPLS L2VPN。

      # 配置PE1。

      [*PE1] mpls l2vpn
      [*PE1-l2vpn] quit
      [*PE1] commit

      # 配置PE2。

      [~PE2] mpls l2vpn
      [*PE2-l2vpn] quit
      [*PE2] commit

      # 配置PE3。

      [~PE3] mpls l2vpn
      [*PE3-l2vpn] quit
      [*PE3] commit

    4. 配置VSI和QinQ终结子接口，并将VSI与QinQ终结子接口绑定。

      # 配置PE1。

      [~PE1] vsi ldp1 static
      [*PE1-vsi-ldp1] pwsignal ldp
      [*PE1-vsi-ldp1-ldp] vsi-id 2
      [*PE1-vsi-ldp1-ldp] peer 2.2.2.9
      [*PE1-vsi-ldp1-ldp] peer 3.3.3.9
      [*PE1-vsi-ldp1-ldp] quit
      [*PE1-vsi-ldp1] quit
      [*PE1] interface gigabitethernet 0/1/1.1
      [*PE1-GigabitEthernet0/1/1.1] control-vid 1 qinq-termination
      [*PE1-GigabitEthernet0/1/1.1] qinq termination l2 symmetry
      [*PE1-GigabitEthernet0/1/1.1] qinq termination pe-vid 100 ce-vid 10
      [*PE1-GigabitEthernet0/1/1.1] qinq termination pe-vid 100 ce-vid 20
      [*PE1-GigabitEthernet0/1/1.1] l2 binding vsi ldp1
      [*PE1-GigabitEthernet0/1/1.1] quit
      [*PE1] commit

      # 配置PE2。

      [~PE2] vsi ldp1 static
      [*PE2-vsi-ldp1] pwsignal ldp
      [*PE2-vsi-ldp1-ldp] vsi-id 2
      [*PE2-vsi-ldp1-ldp] peer 1.1.1.9
      [*PE2-vsi-ldp1-ldp] peer 3.3.3.9
      [*PE2-vsi-ldp1-ldp] quit
      [*PE2-vsi-ldp1] quit
      [*PE2] interface gigabitethernet 0/1/1.1
      [*PE2-GigabitEthernet0/1/1.1] control-vid 1 qinq-termination
      [*PE2-GigabitEthernet0/1/1.1] qinq termination l2 symmetry
      [*PE2-GigabitEthernet0/1/1.1] qinq termination pe-vid 100 ce-vid 10
      [*PE2-GigabitEthernet0/1/1.1] qinq termination pe-vid 100 ce-vid 20
      [*PE2-GigabitEthernet0/1/1.1] l2 binding vsi ldp1
      [*PE2-GigabitEthernet0/1/1.1] quit
      [*PE2] commit

      # 配置PE3。

      [~PE3] vsi ldp1 static
      [*PE3-vsi-ldp1] pwsignal ldp
      [*PE3-vsi-ldp1-ldp] vsi-id 2
      [*PE3-vsi-ldp1-ldp] peer 1.1.1.9
      [*PE3-vsi-ldp1-ldp] peer 2.2.2.9
      [*PE3-vsi-ldp1-ldp] quit
      [*PE3-vsi-ldp1] quit
      [*PE3] interface gigabitethernet 0/1/1.1
      [*PE3-GigabitEthernet0/1/1.1] control-vid 1 qinq-termination
      [*PE3-GigabitEthernet0/1/1.1] qinq termination l2 symmetry
      [*PE3-GigabitEthernet0/1/1.1] qinq termination pe-vid 100 ce-vid 10
      [*PE3-GigabitEthernet0/1/1.1] qinq termination pe-vid 100 ce-vid 20
      [*PE3-GigabitEthernet0/1/1.1] l2 binding vsi ldp1
      [*PE3-GigabitEthernet0/1/1.1] quit
      [*PE3] commit

      同一主接口不同子接口上使用qinq termination命令时，当两个不同的子接口的pe-vid取值相同时，ce-vid的取值范围不能有重叠。

      完成上述配置后，在PE1上执行命令display vsi name ldp1 verbose，可以看到名字为ldp1的VSI建立了到PE2、PE3的PW，VSI状态为Up。
      [~PE1] display vsi name ldp1 verbose
       ***VSI Name               : ldp1
    Administrator VSI      : no
    Isolate Spoken         : disable
    VSI Index              : 1
    PW Signaling           : ldp
    Member Discovery Style : static
    Bridge-domain Mode     : disable
    PW MAC Learn Style     : unqualify
    Encapsulation Type     : vlan
    MTU                    : 1500
    Diffserv Mode          : uniform
    Service Class          : --
    Color                  : --
    DomainId               : 255
    Domain Name            :
    Ignore AcState         : disable
    P2P VSI                : disable
    Create Time            : 0 days, 0 hours, 3 minutes, 8 seconds
    VSI State              : up

    VSI ID                 : 2
   *Peer Router ID         : 2.2.2.9
    primary or secondary   : primary
    ignore-standby-state   : no
    VC Label               : 17
    Peer Type              : dynamic
    Session                : up
    Tunnel ID              :0x0000000001006a5c21
    Broadcast Tunnel ID    : --
    Broad BackupTunnel ID  : --
    CKey                   : 1
    NKey                   : 3154116711
    Stp Enable             : 0
    PwIndex                : 0
    Control Word           : disable
   *Peer Router ID         : 3.3.3.9
    primary or secondary   : primary
    ignore-standby-state   : no
    VC Label               : 18
    Peer Type              : dynamic
    Session                : up
    Tunnel ID              : 0x0000000001004c4b43
    Broadcast Tunnel ID    : --
    Broad BackupTunnel ID  : --
    CKey                   : 2
    NKey                   : 3154116712
    Stp Enable             : 0
    PwIndex                : 0
    Control Word           : disable

    Interface Name         : GigabitEthernet0/1/1.1
    State                  : up
    Access Port            : false
    Last Up Time           : 2012/07/19 03:19:14
    Total Up Time          : 0 days, 0 hours, 3 minutes, 11 seconds

  **PW Information:

   *Peer Ip Address        : 2.2.2.9
    PW State               : up
    Local VC Label         : 17
    Remote VC Label        : 17
    Remote Control Word    : disable
    PW Type                : label
    Tunnel ID              : 0x0000000001006a5c21
    Broadcast Tunnel ID    : --
    Broad BackupTunnel ID  : --
    Ckey                   : 1
    Nkey                   : 3154116711
    Main PW Token          : 0x0
    Slave PW Token         : 0x0
    Tnl Type               : ldp
    OutInterface           : LDP LSP
    Backup OutInterface    :
    Stp Enable             : 0
    PW Last Up Time        : 2012/07/19 03:21:09
    PW Total Up Time       : 0 days, 0 hours, 0 minutes, 29 seconds
   *Peer Ip Address        : 3.3.3.9
    PW State               : up
    Local VC Label         : 18
    Remote VC Label        : 17
    Remote Control Word    : disable
    PW Type                : label
    Tunnel ID              : 0x0000000001004c4b43
    Broadcast Tunnel ID    : --
    Broad BackupTunnel ID  : --
    Ckey                   : 2
    Nkey                   : 3154116712
    Main PW Token          : 0x0
    Slave PW Token         : 0x0
    Tnl Type               : ldp
    OutInterface           : LDP LSP
    Backup OutInterface    :
    Stp Enable             : 0
    PW Last Up Time        : 2012/07/19 03:21:09
    PW Total Up Time       : 0 days, 0 hours, 0 minutes, 29 seconds

  4. 检查配置结果

    上述配置完成后，执行命令display qinq information termination interface，可以查看到QinQ终结子接口配置信息，及QinQ终结子接口绑定了VSI。

    以PE1的显示为例。

    [*PE1] display qinq information termination interface gigabitethernet 0/1/1
      GigabitEthernet0/1/1.1
    VSI bound
    qinq termination l2 symmetry
    Total QinQ Num: 2
      qinq termination pe-vid 100 ce-vid 10
      qinq termination pe-vid 100 ce-vid 20
    Total vlan-group Num: 0
    encapsulation qinq-termination

    CE1、CE2和CE3下的主机能够相互Ping通。

    [*CE1] ping 10.1.1.2
      PING 10.1.1.2: 56  data bytes, press CTRL_C to break
    Reply from 10.1.1.2: bytes=56 Sequence=1 ttl=255 time=43 ms
    Reply from 10.1.1.2: bytes=56 Sequence=2 ttl=255 time=33 ms
    Reply from 10.1.1.2: bytes=56 Sequence=3 ttl=255 time=98 ms
    Reply from 10.1.1.2: bytes=56 Sequence=4 ttl=255 time=181 ms
    Reply from 10.1.1.2: bytes=56 Sequence=5 ttl=255 time=129 ms

  --- 10.1.1.2 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 33/96/181 ms
    [*CE1] ping 10.1.1.3
      PING 10.1.1.3: 56  data bytes, press CTRL_C to break
    Reply from 10.1.1.3: bytes=56 Sequence=1 ttl=255 time=3 ms
    Reply from 10.1.1.3: bytes=56 Sequence=2 ttl=255 time=2 ms
    Reply from 10.1.1.3: bytes=56 Sequence=3 ttl=255 time=2 ms
    Reply from 10.1.1.3: bytes=56 Sequence=4 ttl=255 time=2 ms
    Reply from 10.1.1.3: bytes=56 Sequence=5 ttl=255 time=2 ms

  --- 10.1.1.3 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 2/2/3 ms

配置文件

  • PE1的配置文件

    #
 sysname PE1
#
 mpls lsr-id 1.1.1.9
#
 mpls
#
 mpls l2vpn
#
vsi ldp1 static
 pwsignal ldp
  vsi-id 2
  peer 3.3.3.9
  peer 2.2.2.9
#
mpls ldp
#
interface GigabitEthernet0/1/1
 undo shutdown
#
interface GigabitEthernet0/1/1.1
 encapsulation qinq-termination
 qinq termination l2 symmetry
 qinq termination pe-vid 100 ce-vid 10
 qinq termination pe-vid 100 ce-vid 20
 l2 binding vsi ldp1
#
interface GigabitEthernet0/1/2
 undo shutdown
 ip address 192.168.1.1 255.255.255.252
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/3
 undo shutdown
 ip address 192.168.3.1 255.255.255.252
 mpls
 mpls ldp
#
interface LoopBack1
 ip address 1.1.1.9 255.255.255.255
#
ospf 1
 area 0.0.0.0
  network 1.1.1.9 0.0.0.0
  network 192.168.1.0 0.0.0.3
  network 192.168.3.0 0.0.0.3
#
return

  • PE2的配置文件

    #
 sysname PE2
#
 mpls lsr-id 2.2.2.9
#
 mpls
#
 mpls l2vpn
#
vsi ldp1 static
 pwsignal ldp
  vsi-id 2
  peer 1.1.1.9
  peer 3.3.3.9
#
mpls ldp
#
interface GigabitEthernet0/1/1
 undo shutdown
#
interface GigabitEthernet0/1/1.1
 encapsulation qinq-termination
 qinq termination l2 symmetry
 qinq termination pe-vid 100 ce-vid 10
 qinq termination pe-vid 100 ce-vid 20
 l2 binding vsi ldp1
#
interface GigabitEthernet0/1/2
 undo shutdown
 ip address 192.168.2.2 255.255.255.252
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/3
 undo shutdown
 ip address 192.168.3.2 255.255.255.252
 mpls
 mpls ldp
#
interface LoopBack1
 ip address 2.2.2.9 255.255.255.255
#
ospf 1
 area 0.0.0.0
  network 2.2.2.9 0.0.0.0
  network 192.168.3.0 0.0.0.3
  network 192.168.2.0 0.0.0.3
#
return

  • PE3的配置文件

    #
 sysname PE3
#
 mpls lsr-id 3.3.3.9
#
 mpls
#
 mpls l2vpn
#
vsi ldp1 static
 pwsignal ldp
  vsi-id 2
  peer 1.1.1.9
  peer 2.2.2.9
#
mpls ldp
#
interface GigabitEthernet0/1/1
 undo shutdown
#
interface GigabitEthernet0/1/1.1
 encapsulation qinq-termination
 qinq termination l2 symmetry
 qinq termination pe-vid 100 ce-vid 10
 qinq termination pe-vid 100 ce-vid 20
 l2 binding vsi ldp1
#
interface GigabitEthernet0/1/2
 undo shutdown
 ip address 192.168.1.2 255.255.255.252
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/3
 undo shutdown
 ip address 192.168.2.1 255.255.255.252
 mpls
 mpls ldp
#
interface LoopBack1
 ip address 3.3.3.9 255.255.255.255
#
ospf 1
 area 0.0.0.0
  network 3.3.3.9 0.0.0.0
  network 192.168.1.0 0.0.0.3
  network 192.168.2.0 0.0.0.3
#
return

  • DeviceA的配置文件

    #
 sysname DeviceA
#
 vlan batch 100
#
interface GigabitEthernet0/1/3
 portswitch
 undo shutdown
 port link-type trunk
 port trunk allow-pass vlan 100
#
interface GigabitEthernet0/1/1
 portswitch
 undo shutdown
 port vlan-stacking vlan 10 stack-vlan 100
#
interface GigabitEthernet0/1/2
 portswitch
 undo shutdown
 port vlan-stacking vlan 20 stack-vlan 100
#
return

  • DeviceB的配置文件

    #
 sysname DeviceB
#
 vlan batch 100
#
interface GigabitEthernet0/1/3
 portswitch
 undo shutdown
 port link-type trunk
 port trunk allow-pass vlan 100
#
interface GigabitEthernet0/1/1
 portswitch
 undo shutdown
 port vlan-stacking vlan 10 stack-vlan 100
#
interface GigabitEthernet0/1/2
 portswitch
 undo shutdown
 port vlan-stacking vlan 20 stack-vlan 100
#
return

  • DeviceC的配置文件

    #
 sysname DeviceC
#
 vlan batch 100
#
interface GigabitEthernet0/1/3
 portswitch
 undo shutdown
 port link-type trunk
 port trunk allow-pass vlan 100
#
interface GigabitEthernet0/1/1
 portswitch
 undo shutdown
 port vlan-stacking vlan 10 stack-vlan 100
#
interface GigabitEthernet0/1/2
 portswitch
 undo shutdown
 port vlan-stacking vlan 20 stack-vlan 100
#
return

  • CE1的配置文件

    #
 sysname CE1
#
interface GigabitEthernet0/1/1
 undo shutdown
#
interface GigabitEthernet0/1/1.1
 vlan-type dot1q 10
 ip address 10.1.1.1 255.255.255.0
#
return

  • CE2的配置文件

    #
 sysname CE2
#
interface GigabitEthernet0/1/1
 undo shutdown
#
interface GigabitEthernet0/1/1.1
 vlan-type dot1q 10
 ip address 10.1.1.2 255.255.255.0
#
return

  • CE3的配置文件

    #
 sysname CE3
#
interface GigabitEthernet0/1/1
 undo shutdown
#
interface GigabitEthernet0/1/1.1
 vlan-type dot1q 10
 ip address 10.1.1.3 255.255.255.0
#
return

  • CE4的配置文件

    #
 sysname CE4
#
interface GigabitEthernet0/1/1
 undo shutdown
#
interface GigabitEthernet0/1/1.1
 vlan-type dot1q 20
 ip address 10.2.1.1 255.255.255.0
#
return

  • CE5的配置文件

    #
 sysname CE5
#
interface GigabitEthernet0/1/1
 undo shutdown
#
interface GigabitEthernet0/1/1.1
 vlan-type dot1q 20
 ip address 10.2.1.2 255.255.255.0
#
return

  • CE6的配置文件

    #
 sysname CE6
#
interface GigabitEthernet0/1/1
 undo shutdown
#
interface GigabitEthernet0/1/1.1
 vlan-type dot1q 20
 ip address 10.2.1.3 255.255.255.0
#
return
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