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Example for Connecting Dot1q Termination Sub-interfaces to a VPLS Network

Networking Requirements

In the network example shown in Figure 1, VPLS is enabled on PE1 and PE2. CE1 is connected to PE1 and CE2 is connected to PE2. CE1 and CE2 are on the same VPLS network. PWs are established by using LDP as the VPLS signaling protocol, and VPLS is configured to connect CE1 and CE2.

Figure 1 Networking diagram for connecting Dot1q termination sub-interfaces to a VPLS network

Switch

Interface

VLANIF Interface

IP Address

PE1

GigabitEthernet0/0/1

GigabitEthernet0/0/1.1

-

-

GigabitEthernet0/0/2

VLANIF 20

4.4.4.4/24

-

Loopback1

-

1.1.1.1/32

PE2

GigabitEthernet0/0/1

VLANIF 30

5.5.5.5/24

-

GigabitEthernet0/0/2

GigabitEthernet0/0/2.1

-

-

Loopback1

-

3.3.3.3/32

P

GigabitEthernet0/0/1

VLANIF 20

4.4.4.5/24

-

GigabitEthernet0/0/2

VLANIF 30

5.5.5.4/24

-

Loopback1

-

2.2.2.2/32

CE1

GigabitEthernet0/0/1

VLANIF 10

10.1.1.1/24

CE2

GigabitEthernet0/0/1

VLANIF 10

10.1.1.2/24

Configuration Roadmap

  1. Configure a routing protocol on the backbone network to implement interworking between devices.

  2. Configure Dot1q sub-interfaces on PE interfaces connected to CEs so that the Dot1q sub-interfaces can connect to the VPLS network.

  3. Set up a remote LDP session between PEs.

  4. Establish tunnels between PEs to transmit service data.

  5. Enable MPLS L2VPN on PEs.

  6. Create VSIs on PEs and specify the signaling protocol as LDP.

    VLAN termination sub-interfaces cannot be created on a VCMP client.

Procedure

  1. Configure the VLAN to which each interface belongs, and assign IP addresses to VLANIF interfaces according to Figure 1.

    • The AC-side and PW-side physical interfaces of a PE cannot be added to the same VLAN; otherwise, a loop may occur.

    • Ensure that each packet sent from a CE to a PE carries a VLAN tag.

    # Configure CE1.

    <HUAWEI> system-view
    [HUAWEI] sysname CE1
    [CE1] vlan batch 10
    [CE1] interface gigabitethernet 0/0/1
    [CE1-GigabitEthernet0/0/1] port link-type trunk
    [CE1-GigabitEthernet0/0/1] port trunk allow-pass vlan 10
    [CE1-GigabitEthernet0/0/1] quit
    [CE1] interface vlanif 10
    [CE1-Vlanif10] ip address 10.1.1.1 24
    [CE1-Vlanif10] quit

    # Configure CE2.

    <HUAWEI> system-view
    [HUAWEI] sysname CE2
    [CE2] vlan batch 10
    [CE2] interface gigabitethernet 0/0/1
    [CE2-GigabitEthernet0/0/1] port link-type trunk
    [CE2-GigabitEthernet0/0/1] port trunk allow-pass vlan 10
    [CE2-GigabitEthernet0/0/1] quit
    [CE2] interface vlanif 10
    [CE2-Vlanif10] ip address 10.1.1.2 24
    [CE2-Vlanif10] quit

    # Configure PE1.

    <HUAWEI> system-view
    [HUAWEI] sysname PE1
    [PE1] vlan batch 20
    [PE1] interface gigabitethernet 0/0/2
    [PE1-GigabitEthernet0/0/2] port link-type hybrid
    [PE1-GigabitEthernet0/0/2] port hybrid pvid vlan 20
    [PE1-GigabitEthernet0/0/2] port hybrid tagged vlan 20
    [PE1-GigabitEthernet0/0/2] quit
    [PE1] interface vlanif 20
    [PE1-Vlanif20] ip address 4.4.4.4 24
    [PE1-Vlanif20] quit

    # Configure P.

    <HUAWEI> system-view
    [HUAWEI] sysname P
    [P] vlan batch 20 30
    [P] interface gigabitethernet 0/0/1
    [P-GigabitEthernet0/0/1] port link-type hybrid
    [P-GigabitEthernet0/0/1] port hybrid pvid vlan 20
    [P-GigabitEthernet0/0/1] port hybrid tagged vlan 20
    [P-GigabitEthernet0/0/1] quit
    [P] interface gigabitethernet 0/0/2
    [P-GigabitEthernet0/0/2] port link-type hybrid
    [P-GigabitEthernet0/0/2] port hybrid pvid vlan 30
    [P-GigabitEthernet0/0/2] port hybrid tagged vlan 30
    [P-GigabitEthernet0/0/2] quit
    [P] interface vlanif 20
    [P-Vlanif20] ip address 4.4.4.5 24
    [P-Vlanif20] quit
    [P] interface vlanif 30
    [P-Vlanif30] ip address 5.5.5.4 24
    [P-Vlanif30] quit

    # Configure PE2.

    <HUAWEI> system-view
    [HUAWEI] sysname PE2
    [PE2] vlan batch 30
    [PE2] interface gigabitethernet 0/0/1
    [PE2-GigabitEthernet0/0/1] port link-type hybrid
    [PE2-GigabitEthernet0/0/1] port hybrid pvid vlan 30
    [PE2-GigabitEthernet0/0/1] port hybrid tagged vlan 30
    [PE2-GigabitEthernet0/0/1] quit
    [PE2] interface vlanif 30
    [PE2-Vlanif30] ip address 5.5.5.5 24
    [PE2-Vlanif30] quit

  2. Configure an IGP, for example, OSPF.

    Configure PE1, P, and PE2 to advertise 32-bit loopback interface addresses as the LSR IDs.

    # Configure PE1.

    [PE1] router id 1.1.1.1
    [PE1] interface loopback 1
    [PE1-LoopBack1] ip address 1.1.1.1 32
    [PE1-LoopBack1] quit
    [PE1] ospf 1
    [PE1-ospf-1] area 0
    [PE1-ospf-1-area-0.0.0.0] network 1.1.1.1 0.0.0.0
    [PE1-ospf-1-area-0.0.0.0] network 4.4.4.4 0.0.0.255
    [PE1-ospf-1-area-0.0.0.0] quit
    [PE1-ospf-1] quit

    # Configure P.

    [P] router id 2.2.2.2
    [P] interface loopback 1
    [P-LoopBack1] ip address 2.2.2.2 32
    [P-LoopBack1] quit
    [P] ospf 1
    [P-ospf-1] area 0
    [P-ospf-1-area-0.0.0.0] network 2.2.2.2 0.0.0.0
    [P-ospf-1-area-0.0.0.0] network 4.4.4.5 0.0.0.255
    [P-ospf-1-area-0.0.0.0] network 5.5.5.4 0.0.0.255
    [P-ospf-1-area-0.0.0.0] quit
    [P-ospf-1] quit

    # Configure PE2.

    [PE2] router id 3.3.3.3
    [PE2] interface loopback 1
    [PE2-LoopBack1] ip address 3.3.3.3 32
    [PE2-LoopBack1] quit
    [PE2] ospf 1
    [PE2-ospf-1] area 0
    [PE2-ospf-1-area-0.0.0.0] network 3.3.3.3 0.0.0.0
    [PE2-ospf-1-area-0.0.0.0] network 5.5.5.5 0.0.0.255
    [PE2-ospf-1-area-0.0.0.0] quit
    [PE2-ospf-1] quit

    After the configuration is complete, run the display ip routing-table command on PE1, P, and PE2. You can view the routes that PE1, P, and PE2 have learned from each other. The following is the display on PE1:

    [PE1] display ip routing-table                                                   
    Route Flags: R - relay, D - download to fib, T - to vpn-instance                                     
    ------------------------------------------------------------------------------  
    Routing Tables: Public                                                          
             Destinations : 8       Routes : 8                                    
                                                                                    
    Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface      
                                                                                    
            1.1.1.1/32  Direct  0    0           D   127.0.0.1       LoopBack1      
            2.2.2.2/32  OSPF    10   1           D   4.4.4.5         Vlanif20       
            3.3.3.3/32  OSPF    10   2           D   4.4.4.5         Vlanif20       
            4.4.4.0/24  Direct  0    0           D   4.4.4.4         Vlanif20       
            4.4.4.4/32  Direct  0    0           D   127.0.0.1       Vlanif20       
            5.5.5.0/24  OSPF    10   2           D   4.4.4.5         Vlanif20       
          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    

  3. Configure basic MPLS functions and MPLS LDP.

    # Configure PE1.

    [PE1] mpls lsr-id 1.1.1.1
    [PE1] mpls
    [PE1-mpls] quit
    [PE1] mpls ldp
    [PE1-mpls-ldp] quit
    [PE1] interface vlanif 20
    [PE1-Vlanif20] mpls
    [PE1-Vlanif20] mpls ldp
    [PE1-Vlanif20] quit

    # Configure P.

    [P] mpls lsr-id 2.2.2.2
    [P] mpls
    [P-mpls] quit
    [P] mpls ldp
    [P-mpls-ldp] quit
    [P] interface vlanif 20
    [P-Vlanif20] mpls
    [P-Vlanif20] mpls ldp
    [P-Vlanif20] quit
    [P] interface vlanif 30
    [P-Vlanif30] mpls
    [P-Vlanif30] mpls ldp
    [P-Vlanif30] quit

    # Configure PE2.

    [PE2] mpls lsr-id 3.3.3.3
    [PE2] mpls
    [PE2-mpls] quit
    [PE2] mpls ldp
    [PE2-mpls-ldp] quit
    [PE2] interface vlanif 30
    [PE2-Vlanif30] mpls
    [PE2-Vlanif30] mpls ldp
    [PE2-Vlanif30] quit

    After the configuration is complete, run the display mpls ldp session command on PE1, P, and PE2. You can see that the peer relationships are set up between PE1 and P, and between P and PE2. The status of the peer relationship is Operational. Run the display mpls ldp command to view the MPLS LDP configuration. The following is the display on PE1:

    [PE1] display mpls ldp session
     LDP Session(s) in Public Network
     Codes: LAM(Label Advertisement Mode), SsnAge Unit(DDDD:HH:MM)
     A '*' before a session means the session is being deleted.
     ------------------------------------------------------------------------------
     PeerID            Status      LAM  SsnRole  SsnAge      KASent/Rcv
     ------------------------------------------------------------------------------
     2.2.2.2:0          Operational DU Passive  0000:15:29   3717/3717
     ------------------------------------------------------------------------------
     TOTAL: 1 session(s) Found.
    

  4. Set up a remote LDP session between PEs.

    # Configure PE1.

    [PE1] mpls ldp remote-peer 3.3.3.3
    [PE1-mpls-ldp-remote-3.3.3.3] remote-ip 3.3.3.3
    [PE1-mpls-ldp-remote-3.3.3.3] quit

    # Configure PE2.

    [PE2] mpls ldp remote-peer 1.1.1.1
    [PE2-mpls-ldp-remote-1.1.1.1] remote-ip 1.1.1.1
    [PE2-mpls-ldp-remote-1.1.1.1] quit

    After the configuration is complete, run the display mpls ldp session command on PE1 or PE2. You can see that the status of the peer relationship between PE1 and PE2 is Operational. The following is the display on PE1:

    [PE1] display mpls ldp session
     LDP Session(s) in Public Network
     Codes: LAM(Label Advertisement Mode), SsnAge Unit(DDDD:HH:MM)
     A '*' before a session means the session is being deleted.
     ------------------------------------------------------------------------------
     PeerID            Status      LAM  SsnRole  SsnAge      KASent/Rcv
     ------------------------------------------------------------------------------
     2.2.2.2:0          Operational DU Passive  0000:15:29   3717/3717
     3.3.3.3:0          Operational DU Passive  0000:00:00   2/2
     ------------------------------------------------------------------------------
     TOTAL: 2 session(s) Found.

  5. Enable MPLS L2VPN on PEs.

    # Configure PE1.

    [PE1] mpls l2vpn
    [PE1-l2vpn] quit

    # Configure PE2.

    [PE2] mpls l2vpn
    [PE2-l2vpn] quit

  6. Configure VSIs on PEs.

    # Configure PE1.

    [PE1] vsi a2 static
    [PE1-vsi-a2] pwsignal ldp
    [PE1-vsi-a2-ldp] vsi-id 2
    [PE1-vsi-a2-ldp] peer 3.3.3.3
    [PE1-vsi-a2-ldp] quit
    [PE1-vsi-a2] quit

    # Configure PE2.

    [PE2] vsi a2 static
    [PE2-vsi-a2] pwsignal ldp
    [PE2-vsi-a2-ldp] vsi-id 2
    [PE2-vsi-a2-ldp] peer 1.1.1.1
    [PE2-vsi-a2-ldp] quit
    [PE2-vsi-a2] quit

  7. Bind interfaces to VSIs on PEs.

    # Configure PE1.

    [PE1] vcmp role silent
    [PE1] interface gigabitethernet0/0/1
    [PE1-GigabitEthernet0/0/1] port link-type hybrid
    [PE1-GigabitEthernet0/0/1] quit
    [PE1] interface gigabitethernet0/0/1.1
    [PE1-GigabitEthernet0/0/1.1] dot1q termination vid 10
    [PE1-GigabitEthernet0/0/1.1] l2 binding vsi a2
    [PE1-GigabitEthernet0/0/1.1] quit

    # Configure PE2.

    [PE2] vcmp role silent
    [PE2] interface gigabitethernet0/0/2
    [PE2-GigabitEthernet0/0/2] port link-type hybrid
    [PE2-GigabitEthernet0/0/2] quit
    [PE2] interface gigabitethernet0/0/2.1
    [PE2-GigabitEthernet0/0/2.1] dot1q termination vid 10
    [PE2-GigabitEthernet0/0/2.1] l2 binding vsi a2
    [PE2-GigabitEthernet0/0/2.1] quit

  8. Verify the configuration.

    After the configuration is complete, run the display vsi name a2 verbose command on PE1. You can see that the VSI a2 sets up a PW to PE2 and the VSI status is Up.

    [PE1] display vsi name a2 verbose
    
     ***VSI Name               : a2
        Administrator VSI      : no
        Isolate Spoken         : disable
        VSI Index              : 0
        PW Signaling           : ldp
        Member Discovery Style : static
        PW MAC Learn Style     : unqualify
        Encapsulation Type     : vlan
        MTU                    : 1500
        Diffserv Mode          : uniform
        Mpls Exp               : --
        DomainId               : 255
        Domain Name            :
        Ignore AcState         : disable
        P2P VSI                : disable
        Create Time            : 0 days, 0 hours, 5 minutes, 1 seconds
        VSI State              : up
    
        VSI ID                 : 2
       *Peer Router ID         : 3.3.3.3
        Negotiation-vc-id      : 2
        primary or secondary   : primary
        ignore-standby-state   : no
        VC Label               : 23552
        Peer Type              : dynamic
        Session                : up
        Tunnel ID              : 0x22
        Broadcast Tunnel ID    : 0x22
        Broad BackupTunnel ID  : 0x0
        CKey                   : 2
        NKey                   : 1
        Stp Enable             : 0
        PwIndex                : 0
        Control Word           : disable
    
        Interface Name         : gigabitethernet0/0/1.1
        State                  : up
        Access Port            : false
        Last Up Time           : 2010/12/30 11:31:18
        Total Up Time          : 0 days, 0 hours, 1 minutes, 35 seconds
    
      **PW Information:
    
       *Peer Ip Address        : 3.3.3.3
        PW State               : up
        Local VC Label         : 23552
        Remote VC Label        : 23552
        Remote Control Word    : disable
        PW Type                : label
        Local  VCCV            : alert lsp-ping bfd
        Remote VCCV            : alert lsp-ping bfd
        Tunnel ID              : 0x22
        Broadcast Tunnel ID    : 0x22
        Broad BackupTunnel ID  : 0x0
        Ckey                   : 0x2
        Nkey                   : 0x1
        Main PW Token          : 0x22
        Slave PW Token         : 0x0
        Tnl Type               : LSP
        OutInterface           : Vlanif20
        Backup OutInterface    :
        Stp Enable             : 0
        PW Last Up Time        : 2010/12/30 11:32:03
        PW Total Up Time       : 0 days, 0 hours, 0 minutes, 50 seconds

    CE1 (10.1.1.1) can ping CE2 (10.1.1.2) successfully.

    [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=90 ms
        Reply from 10.1.1.2: bytes=56 Sequence=2 ttl=255 time=77 ms
        Reply from 10.1.1.2: bytes=56 Sequence=3 ttl=255 time=34 ms
        Reply from 10.1.1.2: bytes=56 Sequence=4 ttl=255 time=46 ms
        Reply from 10.1.1.2: bytes=56 Sequence=5 ttl=255 time=94 ms
    
      --- 10.1.1.2 ping statistics ---
        5 packet(s) transmitted
        5 packet(s) received
        0.00% packet loss
        round-trip min/avg/max = 34/68/94 ms 

Configuration Files

  • CE1 configuration file

    #
    sysname CE1
    #
    vlan batch 10
    #
    interface Vlanif10
     ip address 10.1.1.1 255.255.255.0
    #
    interface GigabitEthernet0/0/1
     port link-type trunk
     port trunk allow-pass vlan 10
    #
    return
  • CE2 configuration file

    #
    sysname CE2
    #
    vlan batch 10
    #
    interface Vlanif10
     ip address 10.1.1.2 255.255.255.0
    #
    interface GigabitEthernet0/0/1
     port link-type trunk
     port trunk allow-pass vlan 10
    #
    return
  • PE1 configuration file

    #
    sysname PE1
    #
    router id 1.1.1.1
    #
    vcmp role silent
    #
    vlan batch 20
    #
    mpls lsr-id 1.1.1.1
    mpls
    #
    mpls l2vpn
    #
    vsi a2 static 
     pwsignal ldp 
      vsi-id 2    
      peer 3.3.3.3
    # 
    mpls ldp
    #
    mpls ldp remote-peer 3.3.3.3
     remote-ip 3.3.3.3
    #
    interface Vlanif20
     ip address 4.4.4.4 255.255.255.0
     mpls
     mpls ldp
    #
    interface GigabitEthernet0/0/1  port link-type hybrid
    #
    interface GigabitEthernet0/0/1.1
     dot1q termination vid 10
     l2 binding vsi a2
    #
    interface GigabitEthernet0/0/2
     port link-type hybrid
     port hybrid pvid vlan 20
     port hybrid tagged vlan 20
    #
    interface LoopBack1
     ip address 1.1.1.1 255.255.255.255
    #
    ospf 1
     area 0.0.0.0
      network 1.1.1.1 0.0.0.0
      network 4.4.4.0 0.0.0.255
    #
    return
  • P configuration file

    #
    sysname P
    #
    router id 2.2.2.2
    #
    vlan batch 20 30
    #
    mpls lsr-id 2.2.2.2
    mpls
    #
    mpls ldp
    #
    interface Vlanif20
     ip address 4.4.4.5 255.255.255.0
     mpls
     mpls ldp
    #
    interface Vlanif30
     ip address 5.5.5.4 255.255.255.0
     mpls
     mpls ldp
    #
    interface GigabitEthernet0/0/1
     port link-type hybrid
     port hybrid pvid vlan 20
     port hybrid tagged vlan 20
    #
    interface GigabitEthernet0/0/2
     port link-type hybrid
     port hybrid pvid vlan 30
     port hybrid tagged vlan 30
    #
    interface LoopBack1
     ip address 2.2.2.2 255.255.255.255
    #
    ospf 1
     area 0.0.0.0
      network 2.2.2.2 0.0.0.0
      network 4.4.4.0 0.0.0.255
      network 5.5.5.0 0.0.0.255
    #
    return
  • PE2 configuration file

    #
    sysname PE2
    #
    router id 3.3.3.3
    #
    vcmp role silent
    #
    vlan batch 30
    #
    mpls lsr-id 3.3.3.3
    mpls
    #
    mpls l2vpn
    #
    vsi a2 static
     pwsignal ldp
      vsi-id 2
      peer 1.1.1.1
    #
    mpls ldp
    #
    mpls ldp remote-peer 1.1.1.1
     remote-ip 1.1.1.1
    #
    interface Vlanif30
     ip address 5.5.5.5 255.255.255.0
     mpls
     mpls ldp
    #
    interface GigabitEthernet0/0/1
     port link-type hybrid
     port hybrid pvid vlan 30
     port hybrid tagged vlan 30
    #
    interface GigabitEthernet0/0/2  port link-type hybrid
    #
    interface GigabitEthernet0/0/2.1
     dot1q termination vid 10
     l2 binding vsi a2
    #
    interface LoopBack1
     ip address 3.3.3.3 255.255.255.255
    #
    ospf 1
     area 0.0.0.0
      network 3.3.3.3 0.0.0.0
      network 5.5.5.0 0.0.0.255
    #
    return
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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