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Example for Connecting CEs to the VPLS in Dual-Homing Mode Through MSTP

Networking Requirements

This configuration can be supported only on the S5720-EI, S5720-HI, S5730-HI, S5731-H, S5731S-H, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6730S-H, and S6730-H.

In Figure 1, each CE is dual-homed to PEs. The PEs establish a VPLS full mesh. The CEs and PEs run MSTP. Generally, traffic is forwarded through the primary link. If the primary link fails, traffic is switched to the secondary link.

Figure 1 Network diagram for connecting CEs to the VPLS in dual-homing mode

Switch

Interface

VLANIF Interface

IP Address

PE1

GigabitEthernet0/0/1

GigabitEthernet0/0/1.1

-

GigabitEthernet0/0/2

VLANIF 10

172.16.1.1/24

GigabitEthernet0/0/3

VLANIF 40

172.19.1.2/24

Loopback1

-

1.1.1.1/32

PE2

GigabitEthernet0/0/1

GigabitEthernet0/0/1.1

-

GigabitEthernet0/0/2

VLANIF 10

172.16.1.2/24

GigabitEthernet0/0/3

VLANIF 20

172.17.1.1/24

Loopback1

-

2.2.2.2/32

PE3

GigabitEthernet0/0/1

GigabitEthernet0/0/1.1

-

GigabitEthernet0/0/2

VLANIF 20

172.17.1.2/24

GigabitEthernet0/0/3

VLANIF 30

172.18.1.1/24

Loopback1

-

3.3.3.3/32

PE4

GigabitEthernet0/0/1

GigabitEthernet0/0/1.1

-

GigabitEthernet0/0/2

VLANIF 30

172.18.1.2/24

GigabitEthernet0/0/3

VLANIF 40

172.19.1.1/24

Loopback1

-

4.4.4.4/32

CE1

GigabitEthernet0/0/1

-

-

GigabitEthernet0/0/4

-

-

GigabitEthernet0/0/2

-

-

CE2

GigabitEthernet0/0/1

-

-

GigabitEthernet0/0/4

-

-

GigabitEthernet0/0/2

-

-

Configuration Roadmap

The configuration roadmap is as follows:

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

  2. Set up a remote LDP session between the PEs.

  3. Establish a VPLS full mesh between PEs.

  4. Configure MSTP. Configure PE1 and PE2 as the primary roots, and configure PE3 and PE4 as the secondary roots.

Procedure

  1. Specify the VLANs that device interfaces belong to and set the IP addresses of the corresponding 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.

    • Packets sent from CEs to PEs must contain VLAN tags.

    # Configure CE1.
    <HUAWEI> system-view
[HUAWEI] sysname CE1
[CE1] vlan batch 100
[CE1] interface gigabitethernet 0/0/1
[CE1-GigabitEthernet0/0/1] port link-type trunk
[CE1-GigabitEthernet0/0/1] port trunk allow-pass vlan 100
[CE1-GigabitEthernet0/0/1] quit
[CE1] interface gigabitethernet 0/0/4
[CE1-GigabitEthernet0/0/4] port link-type trunk
[CE1-GigabitEthernet0/0/4] port trunk allow-pass vlan 100
[CE1-GigabitEthernet0/0/4] quit
[CE1] interface gigabitethernet 0/0/2
[CE1-GigabitEthernet0/0/2] port link-type access
[CE1-GigabitEthernet0/0/2] port default vlan 100
[CE1-GigabitEthernet0/0/2] quit
    # Configure CE2.
    <HUAWEI> system-view
[HUAWEI] sysname CE2
[CE2] vlan batch 100
[CE2] interface gigabitethernet 0/0/1
[CE2-GigabitEthernet0/0/1] port link-type trunk
[CE2-GigabitEthernet0/0/1] port trunk allow-pass vlan 100
[CE2-GigabitEthernet0/0/1] quit
[CE2] interface gigabitethernet 0/0/4
[CE2-GigabitEthernet0/0/4] port link-type trunk
[CE2-GigabitEthernet0/0/4] port trunk allow-pass vlan 100
[CE2-GigabitEthernet0/0/4] quit
[CE2] interface gigabitethernet 0/0/2
[CE2-GigabitEthernet0/0/2] port link-type access
[CE2-GigabitEthernet0/0/2] port default vlan 100
[CE2-GigabitEthernet0/0/2] quit
    # Configure PE1.
    <HUAWEI> system-view
[HUAWEI] sysname PE1
[PE1] vlan batch 10 40
[PE1] interface gigabitethernet 0/0/2
[PE1-GigabitEthernet0/0/2] port link-type trunk
[PE1-GigabitEthernet0/0/2] port trunk allow-pass vlan 10
[PE1-GigabitEthernet0/0/2] quit
[PE1] interface gigabitethernet 0/0/3
[PE1-GigabitEthernet0/0/3] port link-type trunk
[PE1-GigabitEthernet0/0/3] port trunk allow-pass vlan 40
[PE1-GigabitEthernet0/0/3] quit
[PE1] interface vlanif 10
[PE1-Vlanif10] ip address 172.16.1.1 24
[PE1-Vlanif10] quit
[PE1] interface vlanif 40
[PE1-Vlanif40] ip address 172.19.1.2 24
[PE1-Vlanif40] quit
    # Configure PE2.
    <HUAWEI> system-view
[HUAWEI] sysname PE2
[PE2] vlan batch 10 20
[PE2] interface gigabitethernet 0/0/2
[PE2-GigabitEthernet0/0/2] port link-type trunk
[PE2-GigabitEthernet0/0/2] port trunk allow-pass vlan 10
[PE2-GigabitEthernet0/0/2] quit
[PE2] interface gigabitethernet 0/0/3
[PE2-GigabitEthernet0/0/3] port link-type trunk
[PE2-GigabitEthernet0/0/3] port trunk allow-pass vlan 20
[PE2-GigabitEthernet0/0/3] quit
[PE2] interface vlanif 10
[PE2-Vlanif10] ip address 172.16.1.2 24
[PE2-Vlanif10] quit
[PE2] interface vlanif 20
[PE2-Vlanif20] ip address 172.17.1.1 24
[PE2-Vlanif20] quit
    # Configure PE3.
    <HUAWEI> system-view
[HUAWEI] sysname PE3
[PE3] vlan batch 20 30
[PE3] interface gigabitethernet 0/0/2
[PE3-GigabitEthernet0/0/2] port link-type trunk
[PE3-GigabitEthernet0/0/2] port trunk allow-pass vlan 20
[PE3-GigabitEthernet0/0/2] quit
[PE3] interface gigabitethernet 0/0/3
[PE3-GigabitEthernet0/0/3] port link-type trunk
[PE3-GigabitEthernet0/0/3] port trunk allow-pass vlan 30
[PE3-GigabitEthernet0/0/3] quit
[PE3] interface vlanif 20
[PE3-Vlanif20] ip address 172.17.1.2 24
[PE3-Vlanif20] quit
[PE3] interface vlanif 30
[PE3-Vlanif30] ip address 172.18.1.1 24
[PE3-Vlanif30] quit
    # Configure PE4.
    <HUAWEI> system-view
[HUAWEI] sysname PE4
[PE4] vlan batch 30 40
[PE4] interface gigabitethernet 0/0/2
[PE4-GigabitEthernet0/0/2] port link-type trunk
[PE4-GigabitEthernet0/0/2] port trunk allow-pass vlan 30
[PE4-GigabitEthernet0/0/2] quit
[PE4] interface gigabitethernet 0/0/3
[PE4-GigabitEthernet0/0/3] port link-type trunk
[PE4-GigabitEthernet0/0/3] port trunk allow-pass vlan 40
[PE4-GigabitEthernet0/0/3] quit
[PE4] interface vlanif 30
[PE4-Vlanif30] ip address 172.18.1.2 24
[PE4-Vlanif30] quit
[PE4] interface vlanif 40
[PE4-Vlanif40] ip address 172.19.1.1 24
[PE4-Vlanif40] quit

  2. Configure an IGP. In this example, OSPF is used.

    When configuring OSPF, advertise 32-bit loopback interface addresses (LSR IDs) of PE1, PE2, PE3, and PE4.

    # 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 172.16.1.0 0.0.0.255
[PE1-ospf-1-area-0.0.0.0] network 172.19.1.0 0.0.0.255
[PE1-ospf-1-area-0.0.0.0] quit
[PE1-ospf-1] quit
    # Configure PE2.
    [PE2] router id 2.2.2.2
[PE2] interface loopback 1
[PE2-LoopBack1] ip address 2.2.2.2 32
[PE2-LoopBack1] quit
[PE2] ospf 1
[PE2-ospf-1] area 0
[PE2-ospf-1-area-0.0.0.0] network 2.2.2.2 0.0.0.0
[PE2-ospf-1-area-0.0.0.0] network 172.16.1.0 0.0.0.255
[PE2-ospf-1-area-0.0.0.0] network 172.17.1.0 0.0.0.255
[PE2-ospf-1-area-0.0.0.0] quit
[PE2-ospf-1] quit
    # Configure PE3.
    [PE3] router id 3.3.3.3
[PE3] interface loopback 1
[PE3-LoopBack1] ip address 3.3.3.3 32
[PE3-LoopBack1] quit
[PE3] ospf 1
[PE3-ospf-1] area 0
[PE3-ospf-1-area-0.0.0.0] network 3.3.3.3 0.0.0.0
[PE3-ospf-1-area-0.0.0.0] network 172.17.1.0 0.0.0.255
[PE3-ospf-1-area-0.0.0.0] network 172.18.1.0 0.0.0.255
[PE3-ospf-1-area-0.0.0.0] quit
[PE3-ospf-1] quit
    # Configure PE4.
    [PE4] router id 4.4.4.4
[PE4] interface loopback 1
[PE4-LoopBack1] ip address 4.4.4.4 32
[PE4-LoopBack1] quit
[PE4] ospf 1
[PE4-ospf-1] area 0
[PE4-ospf-1-area-0.0.0.0] network 4.4.4.4 0.0.0.0
[PE4-ospf-1-area-0.0.0.0] network 172.18.1.0 0.0.0.255
[PE4-ospf-1-area-0.0.0.0] network 172.19.1.0 0.0.0.255
[PE4-ospf-1-area-0.0.0.0] quit
[PE4-ospf-1] quit
    # Wait for 40s and run the display ip routing-table command on PE1, PE2, and PE3. Output similar to the following is displayed (PE1 is used as an example). The output indicates that the PEs have learned the routes to one another.
    [PE1] display ip routing-table
Route Flags: R - relay, D - download to fib, T - to vpn-instance                                     
------------------------------------------------------------------------------  
Routing Tables: Public                                                          
         Destinations : 12       Routes : 13                                    
                                                                                
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   172.16.1.2      Vlanif10       
        3.3.3.3/32  OSPF    10   2           D   172.19.1.1      Vlanif40       
                    OSPF    10   2           D   172.16.1.2      Vlanif10       
        4.4.4.4/32  OSPF    10   1           D   172.19.1.1      Vlanif40       
      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    
     172.16.1.0/24  Direct  0    0           D   172.16.1.1      Vlanif10       
     172.16.1.1/32  Direct  0    0           D   127.0.0.1       Vlanif10       
     172.17.1.0/24  OSPF    10   2           D   172.16.1.2      Vlanif10       
     172.18.1.0/24  OSPF    10   2           D   172.19.1.1      Vlanif40       
     172.19.1.0/24  Direct  0    0           D   172.19.1.2      Vlanif40       
     172.19.1.2/32  Direct  0    0           D   127.0.0.1       Vlanif40

  3. Configure basic MPLS functions and 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 10
[PE1-Vlanif10] mpls
[PE1-Vlanif10] mpls ldp
[PE1-Vlanif10] quit
[PE1] interface vlanif 40
[PE1-Vlanif40] mpls
[PE1-Vlanif40] mpls ldp
[PE1-Vlanif40] quit
    # Configure PE2.
    [PE2] mpls lsr-id 2.2.2.2
[PE2] mpls
[PE2-mpls] quit
[PE2] mpls ldp
[PE2-mpls-ldp] quit
[PE2] interface vlanif 10
[PE2-Vlanif10] mpls
[PE2-Vlanif10] mpls ldp
[PE2-Vlanif10] quit
[PE2] interface vlanif 20
[PE2-Vlanif20] mpls
[PE2-Vlanif20] mpls ldp
[PE2-Vlanif20] quit
    # Configure PE3.
    [PE3] mpls lsr-id 3.3.3.3
[PE3] mpls
[PE3-mpls] quit
[PE3] mpls ldp
[PE3-mpls-ldp] quit
[PE3] interface vlanif 20
[PE3-Vlanif20] mpls
[PE3-Vlanif20] mpls ldp
[PE3-Vlanif20] quit
[PE3] interface vlanif 30
[PE3-Vlanif30] mpls
[PE3-Vlanif30] mpls ldp
[PE3-Vlanif30] quit
    # Configure PE4.
    [PE4] mpls lsr-id 4.4.4.4
[PE4] mpls
[PE4-mpls] quit
[PE4] mpls ldp
[PE4-mpls-ldp] quit
[PE4] interface vlanif 30
[PE4-Vlanif30] mpls
[PE4-Vlanif30] mpls ldp
[PE4-Vlanif30] quit
[PE4] interface vlanif 40
[PE4-Vlanif40] mpls
[PE4-Vlanif40] mpls ldp
[PE4-Vlanif40] quit

  4. Create 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 4.4.4.4
[PE2-mpls-ldp-remote-4.4.4.4] remote-ip 4.4.4.4
[PE2-mpls-ldp-remote-4.4.4.4] quit

    # Configure PE3.

    [PE3] mpls ldp remote-peer 1.1.1.1
[PE3-mpls-ldp-remote-1.1.1.1] remote-ip 1.1.1.1
[PE3-mpls-ldp-remote-1.1.1.1] quit

    # Configure PE4.

    [PE4] mpls ldp remote-peer 2.2.2.2
[PE4-mpls-ldp-remote-2.2.2.2] remote-ip 2.2.2.2
[PE4-mpls-ldp-remote-2.2.2.2] quit
    After the configuration is complete, run the display mpls ldp session command on the PEs. The command output shows that the status of the remote LDP peer relationship is Operational, indicating that remote LDP sessions have been set up. The output on PE1 is used as an example:
    [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  0000:00:00  4/4
3.3.3.3:0          Operational DU   Passive  0000:00:00  4/4
4.4.4.4:0          Operational DU   Passive  0000:00:00  4/4
------------------------------------------------------------------------------
TOTAL: 3 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

    # Configure PE3.

    [PE3] mpls l2vpn
[PE3-l2vpn] quit

    # Configure PE4.

    [PE4] mpls l2vpn
[PE4-l2vpn] quit

  6. Configure a VSI on the PEs.

    # Configure PE1.

    [PE1] vsi a2 static
[PE1-vsi-a2] pwsignal ldp
[PE1-vsi-a2-ldp] vsi-id 2
[PE1-vsi-a2-ldp] peer 2.2.2.2
[PE1-vsi-a2-ldp] peer 3.3.3.3
[PE1-vsi-a2-ldp] peer 4.4.4.4
[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] peer 3.3.3.3
[PE2-vsi-a2-ldp] peer 4.4.4.4
[PE2-vsi-a2-ldp] quit
[PE2-vsi-a2] quit

    Configuration of PE3 and PE4 is similar to configuration of PE1 and PE2.

  7. Bind the VSI to interfaces on the PEs.

    Before configuring the termination sub-interface, run the display vcmp status command to view the VCMP role. If the value of the Role field is Client, run the vcmp role { silent | transparent } command to change the VCMP role to silent or transparent.

    # Configure PE1.

    [PE1] interface gigabitethernet 0/0/1
[PE1-GigabitEthernet0/0/1] port link-type hybrid
[PE1-GigabitEthernet0/0/1] quit
[PE1] interface gigabitethernet 0/0/1.1
[PE1-GigabitEthernet0/0/1.1] dot1q termination vid 100
[PE1-GigabitEthernet0/0/1.1] l2 binding vsi a2
[PE1-GigabitEthernet0/0/1.1] quit

    # Configure PE2.

    [PE2] interface gigabitethernet 0/0/1
[PE2-GigabitEthernet0/0/1] port link-type hybrid
[PE2-GigabitEthernet0/0/1] quit
[PE2] interface gigabitethernet 0/0/1.1
[PE2-GigabitEthernet0/0/1.1] dot1q termination vid 100
[PE2-GigabitEthernet0/0/1.1] l2 binding vsi a2
[PE2-GigabitEthernet0/0/1.1] quit

    # Configure PE3.

    [PE3] interface gigabitethernet 0/0/1
[PE3-GigabitEthernet0/0/1] port link-type hybrid
[PE3-GigabitEthernet0/0/1] quit
[PE3] interface gigabitethernet 0/0/1.1
[PE3-GigabitEthernet0/0/1.1] dot1q termination vid 100
[PE3-GigabitEthernet0/0/1.1] l2 binding vsi a2
[PE3-GigabitEthernet0/0/1.1] quit

    # Configure PE4.

    [PE4] interface gigabitethernet 0/0/1
[PE4-GigabitEthernet0/0/1] port link-type hybrid
[PE4-GigabitEthernet0/0/1] quit
[PE4] interface gigabitethernet 0/0/1.1
[PE4-GigabitEthernet0/0/1.1] dot1q termination vid 100
[PE4-GigabitEthernet0/0/1.1] l2 binding vsi a2
[PE4-GigabitEthernet0/0/1.1] quit

  8. Configure STP.

    1. Configure the MST region and activate the region.

      # Configure PE1.

      [PE1] stp region-configuration
[PE1-mst-region] region-name RG1
[PE1-mst-region] active region-configuration
[PE1-mst-region] quit

      # Configure PE4.

      [PE4] stp region-configuration
[PE4-mst-region] region-name RG1
[PE4-mst-region] active region-configuration
[PE4-mst-region] quit

      # Configure CE1.

      [CE1] stp region-configuration
[CE1-mst-region] region-name RG1
[CE1-mst-region] active region-configuration
[CE1-mst-region] quit

      # Configure PE2.

      [PE2] stp region-configuration
[PE2-mst-region] region-name RG1
[PE2-mst-region] active region-configuration
[PE2-mst-region] quit

      # Configure PE3.

      [PE3] stp region-configuration
[PE3-mst-region] region-name RG1
[PE3-mst-region] active region-configuration
[PE3-mst-region] quit

      # Configure CE2.

      [CE2] stp region-configuration
[CE2-mst-region] region-name RG1
[CE2-mst-region] active region-configuration
[CE2-mst-region] quit

    2. Configure the priorities of the PEs to make PE1 and PE2 the primary roots and PE3 and PE4 the secondary roots.

      # Configure PE1.

      [PE1] stp instance 0 priority 0

      # Configure PE2.

      [PE2] stp instance 0 priority 0

      # Configure PE3.

      [PE3] stp instance 0 priority 4096

      # Configure PE4.

      [PE4] stp instance 0 priority 4096

    3. Enable association between MSTP and VPLS on the CEs and PEs, and configure root protection on the secondary roots.

      # Configure CE1.

      [CE1] stp enable
[CE1] interface gigabitethernet 0/0/4
[CE1-GigabitEthernet0/0/4] stp enable
[CE1-GigabitEthernet0/0/4] quit
[CE1] interface gigabitethernet 0/0/1
[CE1-GigabitEthernet0/0/1] stp enable
[CE1-GigabitEthernet0/0/1] quit
[CE1] interface gigabitethernet 0/0/2
[CE1-GigabitEthernet0/0/2] stp edged-port enable
[CE1-GigabitEthernet0/0/2] quit

      (Optional) Configure BPDU protection on CE1.

      [CE1] stp bpdu-protection

      # Configure CE2.

      [CE2] stp enable
[CE2] interface gigabitethernet 0/0/4
[CE2-GigabitEthernet0/0/4] stp enable
[CE2-GigabitEthernet0/0/4] quit
[CE2] interface gigabitethernet 0/0/1
[CE2-GigabitEthernet0/0/1] stp enable
[CE2-GigabitEthernet0/0/1] quit
[CE2] interface gigabitethernet 0/0/2
[CE2-GigabitEthernet0/0/2] stp edged-port enable
[CE2-GigabitEthernet0/0/2] quit

      (Optional) Configure BPDU protection on CE2.

      [CE2] stp bpdu-protection

      If edge ports are connected to network devices that have STP enabled and BPDU protection is enabled, the edge ports will be shut down and their attributes remain unchanged after they receive BPDUs.

      # Configure PE1.

      [PE1] stp enable
[PE1] interface gigabitethernet 0/0/1
[PE1-GigabitEthernet0/0/1] stp vpls-subinterface enable
[PE1-GigabitEthernet0/0/1] stp enable
[PE1-GigabitEthernet0/0/1] quit
[PE1] interface gigabitethernet 0/0/2
[PE1-GigabitEthernet0/0/2] stp disable
[PE1-GigabitEthernet0/0/2] quit
[PE1] interface gigabitethernet 0/0/3
[PE1-GigabitEthernet0/0/3] stp disable
[PE1-GigabitEthernet0/0/3] quit

      # Configure PE2.

      [PE2] stp enable
[PE2] interface gigabitethernet 0/0/1
[PE2-GigabitEthernet0/0/1] stp vpls-subinterface enable
[PE2-GigabitEthernet0/0/1] stp enable
[PE2-GigabitEthernet0/0/1] quit
[PE2] interface gigabitethernet 0/0/2
[PE2-GigabitEthernet0/0/2] stp disable
[PE2-GigabitEthernet0/0/2] quit
[PE2] interface gigabitethernet 0/0/3
[PE2-GigabitEthernet0/0/3] stp disable
[PE2-GigabitEthernet0/0/3] quit

      # Configure PE3.

      [PE3] stp enable
[PE3] interface gigabitethernet 0/0/1
[PE3-GigabitEthernet0/0/1] stp vpls-subinterface enable
[PE3-GigabitEthernet0/0/1] stp root-protection
[PE3-GigabitEthernet0/0/1] stp enable
[PE3-GigabitEthernet0/0/1] quit
[PE3] interface gigabitethernet 0/0/2
[PE3-GigabitEthernet0/0/2] stp disable
[PE3-GigabitEthernet0/0/2] quit
[PE3] interface gigabitethernet 0/0/3
[PE3-GigabitEthernet0/0/3] stp disable
[PE3-GigabitEthernet0/0/3] quit

      # Configure PE4.

      [PE4] stp enable
[PE4] interface gigabitethernet 0/0/1
[PE4-GigabitEthernet0/0/1] stp vpls-subinterface enable
[PE4-GigabitEthernet0/0/1] stp root-protection
[PE4-GigabitEthernet0/0/1] stp enable
[PE4-GigabitEthernet0/0/1] quit
[PE4] interface gigabitethernet 0/0/2
[PE4-GigabitEthernet0/0/2] stp disable
[PE4-GigabitEthernet0/0/2] quit
[PE4] interface gigabitethernet 0/0/3
[PE4-GigabitEthernet0/0/3] stp disable
[PE4-GigabitEthernet0/0/3] quit

  9. Verify the configuration.

    Run the display vsi name a2 verbose command on PE1. The command output shows that the VSI state 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, 20 hours, 29 minutes, 54 seconds
    VSI State              : up

    VSI ID                 : 2
   *Peer Router ID         : 2.2.2.2
    Negotiation-vc-id      : 2
    primary or secondary   : primary
    ignore-standby-state   : no
    VC Label               : 4099
    Peer Type              : dynamic
    Session                : up
    Tunnel ID              : 0xd
    Broadcast Tunnel ID    : 0xd
    Broad BackupTunnel ID  : 0x0
    CKey                   : 2
    NKey                   : 1
    Stp Enable             : 0
    PwIndex                : 0
    Control Word           : disable
   *Peer Router ID         : 3.3.3.3
    Negotiation-vc-id      : 2
    primary or secondary   : primary
    ignore-standby-state   : no
    VC Label               : 4100
    Peer Type              : dynamic
    Session                : up
    Tunnel ID              : 0xf
    Broadcast Tunnel ID    : 0xf
    Broad BackupTunnel ID  : 0x0
    CKey                   : 4
    NKey                   : 3
    Stp Enable             : 0
    PwIndex                : 0
    Control Word           : disable
   *Peer Router ID         : 4.4.4.4
    Negotiation-vc-id      : 2
    primary or secondary   : primary
    ignore-standby-state   : no
    VC Label               : 4101
    Peer Type              : dynamic
    Session                : up
    Tunnel ID              : 0xb
    Broadcast Tunnel ID    : 0xb
    Broad BackupTunnel ID  : 0x0
    CKey                   : 6
    NKey                   : 5
    Stp Enable             : 0
    PwIndex                : 0
    Control Word           : disable

    Interface Name         : GigabitEthernet0/0/1.1
    State                  : up
    Access Port            : false
    Last Up Time           : 2015/03/16 15:56:44
    Total Up Time          : 0 days, 0 hours, 1 minutes, 24 seconds

   **PW Information:

   *Peer Ip Address        : 3.3.3.3
    PW State               : up
    Local VC Label         : 4100
    Remote VC Label        : 4099
    Remote Control Word    : disable
    PW Type                : label
    Local  VCCV            : alert lsp-ping bfd
    Remote VCCV            : alert lsp-ping bfd
    Tunnel ID              : 0xf
    Broadcast Tunnel ID    : 0xf
    Broad BackupTunnel ID  : 0x0
    Ckey                   : 0x4
    Nkey                   : 0x3
    Main PW Token          : 0xf
    Slave PW Token         : 0x0
    Tnl Type               : LSP
    OutInterface           : Vlanif10
    Backup OutInterface    :
    Stp Enable             : 0
    PW Last Up Time        : 2015/03/16 15:56:48
    PW Total Up Time       : 0 days, 0 hours, 1 minutes, 24 seconds
   *Peer Ip Address        : 4.4.4.4
    PW State               : up
    Local VC Label         : 4101
    Remote VC Label        : 4099
    Remote Control Word    : disable
    PW Type                : label
    Local  VCCV            : alert lsp-ping bfd
    Remote VCCV            : alert lsp-ping bfd
    Tunnel ID              : 0xb
    Broadcast Tunnel ID    : 0xb
    Broad BackupTunnel ID  : 0x0
    Ckey                   : 0x6
    Nkey                   : 0x5
    Main PW Token          : 0xb
    Slave PW Token         : 0x0
    Tnl Type               : LSP
    OutInterface           : Vlanif40
    Backup OutInterface    :
    Stp Enable             : 0
    PW Last Up Time        : 2015/03/16 15:56:49
    PW Total Up Time       : 0 days, 0 hours, 1 minutes, 24 seconds
   *Peer Ip Address        : 2.2.2.2
    PW State               : up
    Local VC Label         : 4099
    Remote VC Label        : 4099
    Remote Control Word    : disable
    PW Type                : label
    Local  VCCV            : alert lsp-ping bfd
    Remote VCCV            : alert lsp-ping bfd
    Tunnel ID              : 0xd
    Broadcast Tunnel ID    : 0xd
    Broad BackupTunnel ID  : 0x0
    Ckey                   : 0x2
    Nkey                   : 0x1
    Main PW Token          : 0xd
    Slave PW Token         : 0x0
    Tnl Type               : LSP
    OutInterface           : Vlanif10
    Backup OutInterface    :
    Stp Enable             : 0
    PW Last Up Time        : 2015/03/16 15:57:06
    PW Total Up Time       : 0 days, 0 hours, 1 minutes, 24 seconds

    PC1 (10.1.1.1) can ping PC2 (10.1.1.2).

    If the link between CE1 and PE1 fails or PE1 is faulty, PE4 becomes the primary root. In this case, PC1 and PE2 can still ping each other.

Configuration Files

  • CE1 configuration file

    #
sysname CE1
#
vlan batch 100
#
stp bpdu-protection
#
stp region-configuration                                                        
 region-name RG1                                                                
 active region-configuration                                                    
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 100
#
interface GigabitEthernet0/0/2  port link-type access                                                            port default vlan 100  stp edged-port enable
#
interface GigabitEthernet0/0/4
 port link-type trunk
 port trunk allow-pass vlan 100
#
return

  • CE2 configuration file

    #
sysname CE2
#
vlan batch 100
#
stp bpdu-protection
#
stp region-configuration                                                        
 region-name RG1                                                                
 active region-configuration
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 100
#
interface GigabitEthernet0/0/2  port link-type access                                                            port default vlan 100  stp edged-port enable
#
interface GigabitEthernet0/0/4
 port link-type trunk
 port trunk allow-pass vlan 100
#
return

  • PE1 configuration file

    #
sysname PE1
#
router id 1.1.1.1
#
vlan batch 10 40
#
stp instance 0 priority 0 
#
stp region-configuration                                                        
 region-name RG1                                                                
 active region-configuration                                                    
#
mpls lsr-id 1.1.1.1
mpls
#
mpls l2vpn
#
vsi a2 static 
 pwsignal ldp 
  vsi-id 2
  peer 2.2.2.2 
  peer 3.3.3.3
  peer 4.4.4.4
# 
mpls ldp
#
mpls ldp remote-peer 3.3.3.3
 remote-ip 3.3.3.3
#
interface Vlanif10
 ip address 172.16.1.1 255.255.255.0
 mpls
 mpls ldp
#
interface Vlanif40
 ip address 172.19.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 stp vpls-subinterface enable
#
interface GigabitEthernet0/0/1.1
 dot1q termination vid 100
 l2 binding vsi a2
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10
 stp disable
#
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 40
 stp disable
#
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 172.16.1.0 0.0.0.255
  network 172.19.1.0 0.0.0.255
#
return

  • PE2 configuration file

    #
sysname PE2
#
router id 2.2.2.2
#
vlan batch 10 20
#
stp instance 0 priority 0 
#
stp region-configuration                                                        
 region-name RG1                                                                
 active region-configuration                                                    
#
mpls lsr-id 2.2.2.2
mpls
#
mpls l2vpn
#
vsi a2 static
 pwsignal ldp
  vsi-id 2
  peer 1.1.1.1
  peer 3.3.3.3
  peer 4.4.4.4
#
mpls ldp
#
mpls ldp remote-peer 4.4.4.4
 remote-ip 4.4.4.4
#
interface Vlanif10
 ip address 172.16.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface Vlanif20
 ip address 172.17.1.1 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 stp vpls-subinterface enable
#
interface GigabitEthernet0/0/1.1
 dot1q termination vid 100
 l2 binding vsi a2
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 10
 stp disable
#
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 20
 stp disable
#
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 172.16.1.0 0.0.0.255
  network 172.17.1.0 0.0.0.255
#
return

  • PE3 configuration file

    #
sysname PE3
#
router id 3.3.3.3
#
vlan batch 20 30
#
stp instance 0 priority 4096 
#
stp region-configuration                                                        
 region-name RG1                                                                
 active region-configuration                                                    
#
mpls lsr-id 3.3.3.3
mpls
#
mpls l2vpn
#
vsi a2 static
 pwsignal ldp
  vsi-id 2
  peer 1.1.1.1
  peer 2.2.2.2
  peer 4.4.4.4
#
mpls ldp
#
mpls ldp remote-peer 1.1.1.1
 remote-ip 1.1.1.1
#
interface Vlanif20
 ip address 172.17.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface Vlanif30
 ip address 172.18.1.1 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 stp root-protection
 stp vpls-subinterface enable
#
interface GigabitEthernet0/0/1.1
 dot1q termination vid 100
 l2 binding vsi a2
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 20
 stp disable
#
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 30
 stp disable
#
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 172.17.1.0 0.0.0.255
  network 172.18.1.0 0.0.0.255
#
return

  • PE4 configuration file

    #
sysname PE4
#
router id 4.4.4.4
#
vlan batch 30 40
#
stp instance 0 priority 4096 
#
stp region-configuration                                                        
 region-name RG1                                                                
 active region-configuration                                                    
#
mpls lsr-id 4.4.4.4
mpls
#
mpls l2vpn
#
vsi a2 static
 pwsignal ldp
  vsi-id 2
  peer 1.1.1.1
  peer 2.2.2.2
  peer 3.3.3.3
#
mpls ldp
#
mpls ldp remote-peer 2.2.2.2
 remote-ip 2.2.2.2
#
interface Vlanif30
 ip address 172.18.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface Vlanif40
 ip address 172.19.1.1 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 stp root-protection
 stp vpls-subinterface enable
#
interface GigabitEthernet0/0/1.1
 dot1q termination vid 100
 l2 binding vsi a2
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 30
 stp disable
#
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 40
 stp disable
#
interface LoopBack1
 ip address 4.4.4.4 255.255.255.255
#
ospf 1
 area 0.0.0.0
  network 4.4.4.4 0.0.0.0
  network 172.18.1.0 0.0.0.255
  network 172.19.1.0 0.0.0.255
#
return
Parent Topic: Configuration Examples for MSTP
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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