Example for Configuring E-STP Using Inter-AS Option A in LDP Mode

To implement E-STP using inter-AS Option A in LDP mode, configure service VSIs in each AS and bind Layer 3 sub-interfaces to VSIs for inter-AS communication; configure mVSIs on the NPEs in the same AS and enable STP for the mPWs; enable STP on Layer 3 interfaces that connect inter-AS NPEs.

Networking Requirements

On the network shown in Figure 1, inter-AS Option A in LDP mode is used.

  • UPE1 is dual-homed to NPE1 and NPE2, and UPE2 is dual-homed to NPE3 and NPE4. Inter-AS redundant links are available.
  • LDP VPLS is configured on each UPE and its directly connected NPEs. Each NPE considers its inter-AS remote NPE a CE.

However, the following problems occur:

  • A UPE receives two copies of traffic from the remote UPE.
  • Data loops may occur among NPE1, NPE3, NPE4, and NPE2.

To prevent these problems, configure an mPW between NPE1 and NPE3 and between NPE2 and NPE4 and enable STP for the mPWs and inter-AS Layer 3 interfaces; configure STP priorities and set the path costs of interfaces to allow NPE3 to function as the root bridge and NPE4 as the backup root bridge so that the inter-AS interface on NPE2 will be blocked, and accordingly VPLS services on Layer 3 sub-interfaces will be blocked as well. As a result, the traffic from CE1 will travel along the path UPE1 -> NPE1 -> NPE3 -> UPE2 to reach CE2, without any duplicate traffic or loops.

Figure 1 Configuring E-STP using inter-AS Option A in LDP mode

Interfaces 1 through 3, sub-interface1.1 and sub-interface3.1 in this example represent GE 0/1/0, GE 0/1/8, GE 0/1/16, GE 0/1/0.1, and GE 0/1/16.1, respectively.



Device

Interface

IP Address

Device

Interface

IP Address

UPE1

GE 0/1/0

10.1.1.1/24

UPE2

GE 0/1/0

10.5.1.2/24

GE 0/1/8

10.1.2.1/24

GE 0/1/8

10.5.2.2/24

Loopback1

1.1.1.1/32

Loopback1

6.6.6.6/32

NPE1

GE 0/1/0

-

NPE2

GE 0/1/0

-

GE 0/1/8

10.8.1.1/24

GE 0/1/8

10.8.1.2/24

GE 0/1/16

10.1.1.2/24

GE 0/1/16

10.1.2.2/24

Loopback1

2.2.2.2/32

Loopback1

3.3.3.3/32

NPE3

GE 0/1/0

-

NPE4

GE 0/1/0

-

GE 0/1/8

10.9.1.1/24

GE 0/1/8

10.9.1.2/24

GE 0/1/16

10.5.1.1/24

GE 0/1/16

10.5.2.1/24

Loopback1

4.4.4.4/32

Loopback1

5.5.5.5/32

CE1

GE 0/1/0.1

192.168.1.1/24

CE2

GE 0/1/0.1

192.168.1.2/24

Configuration Roadmap

The configuration roadmap is as follows:

  1. Configure an IGP on the VPLS backbone network to allow intra-AS devices to communicate.

  2. Configure basic MPLS functions on the VPLS backbone network.
    • Establish a dynamic LDP LSP between the UPE and NPEs in the same AS.
    • Establish a dynamic LDP LSP between the NPEs in the same AS.

    Establish remote LDP sessions if the UPE and an NPE or the NPEs in the same AS are indirectly connected.

  3. Establish VPLS connections between the UPE and NPEs in the same AS.
    • Create service VSIs on the UPE and NPEs in the same AS to exchange service packets.
    • Create mVSIs on the NPEs in the same AS to transmit STP packets over the mPW.

  4. Configure STP.

    • Enable STP for the mPWs.
    • Enable STP for inter-AS physical links.

    Configure STP priorities to allow NPE3 to function as the root bridge and NPE4 as the backup root bridge.

Data Preparation

To complete the configuration, you need the following data:

  • Data needed for configuring OSPF

  • Peer IP addresses

  • MPLS LSR IDs of the UPEs and NPEs

  • VSI IDs

Procedure

  1. Assign an IP address to each interface. For configuration details, see Configuration Files in this section.
  2. Configure an IGP on the VPLS backbone network. This example uses OSPF as the IGP.

    When configuring OSPF, advertise the 32-bit IP addresses of loopback interfaces, which are used as LSR IDs, on the UPEs and NPEs.

    For configuration details, see Configuration Files in this section.

  3. Configure MPLS and establish LDP LSPs.

    Configure basic MPLS functions on the backbone network and set up a dynamic LDP LSP between the UPE and NPEs in the same AS.

    After the configuration is complete, the UPE and NPEs in the same AS have established LDP LSPs. The following example uses the command output on NPE1.

    <NPE1> 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
 ------------------------------------------------------------------------------
 1.1.1.1:0          Operational DU   Active   000:00:00   125/125
 3.3.3.3:0          Operational DU   Passive  000:00:00   124/124
 ------------------------------------------------------------------------------
 TOTAL: 2 session(s) Found.

  4. Enable MPLS L2VPN on the UPEs and NPEs.

    # Configure UPE1.

    [~UPE1] mpls l2vpn
[*UPE1-l2vpn] commit
[~UPE1-l2vpn] quit

    # Configure NPE1.

    [~NPE1] mpls l2vpn
[*NPE1-l2vpn] commit
[~NPE1-l2vpn] quit

    # Configure NPE2.

    [~NPE2] mpls l2vpn
[*NPE2-l2vpn] commit
[~NPE2-l2vpn] quit

    Repeat this step for UPE2, NPE3, and NPE4. For configuration details, see Configuration Files in this section.

  5. Configure VPLS.

    1. Configure mVSIs on the NPEs. Establish LDP peer relationships between NPE1 and NPE2 and between NPE3 and NPE4.

      # Configure NPE1.
      [~NPE1] vsi m1 static
[*NPE1-vsi-m1] pwsignal ldp
[*NPE1-vsi-m1-ldp] vsi-id 100
[*NPE1-vsi-m1-ldp] peer 3.3.3.3
[*NPE1-vsi-m1-ldp] quit
[*NPE1-vsi-m1] admin-vsi
[*NPE1-vsi-m1] quit
[*NPE1] commit
      # Configure NPE2.
      [~NPE2] vsi m1 static
[*NPE2-vsi-m1] pwsignal ldp
[*NPE2-vsi-m1-ldp] vsi-id 100
[*NPE2-vsi-m1-ldp] peer 2.2.2.2
[*NPE2-vsi-m1-ldp] quit
[*NPE2-vsi-m1] admin-vsi
[*NPE2-vsi-m1] quit
[*NPE2] commit
      # Configure NPE3.
      [~NPE3] vsi m1 static
[*NPE3-vsi-m1] pwsignal ldp
[*NPE3-vsi-m1-ldp] vsi-id 100
[*NPE3-vsi-m1-ldp] peer 5.5.5.5
[*NPE3-vsi-m1-ldp] quit
[*NPE3-vsi-m1] admin-vsi
[*NPE3-vsi-m1] quit
[*NPE3] commit
      # Configure NPE4.
      [~NPE4] vsi m1 static
[*NPE4-vsi-m1] pwsignal ldp
[*NPE4-vsi-m1-ldp] vsi-id 100
[*NPE4-vsi-m1-ldp] peer 4.4.4.4
[*NPE4-vsi-m1-ldp] quit
[*NPE4-vsi-m1] admin-vsi
[*NPE1-vsi-m1] quit
[*NPE4] commit

    2. Configure service VSIs on the UPEs and NPEs and bind the service VSIs to Layer 3 sub-interfaces.

      # Configure UPE1.

      [~UPE1] vsi s1 static
[*UPE1-vsi-s1] pwsignal ldp
[*UPE1-vsi-s1-ldp] vsi-id 10
[*UPE1-vsi-s1-ldp] peer 2.2.2.2
[*UPE1-vsi-s1-ldp] peer 3.3.3.3
[*UPE1-vsi-s1-ldp] quit
[*UPE1-vsi-s1] quit
[*UPE1] interface gigabitethernet 0/1/16
[*UPE1-GigabitEthernet0/1/16] undo shutdown
[*UPE1-GigabitEthernet0/1/16] quit
[*UPE1] interface gigabitethernet 0/1/16.1
[*UPE1-GigabitEthernet0/1/16.1] shutdown
[*UPE1-GigabitEthernet0/1/16.1] vlan-type dot1q 10
[*UPE1-GigabitEthernet0/1/16.1] l2 binding vsi s1
[*UPE1-GigabitEthernet0/1/16.1] undo shutdown
[*UPE1-GigabitEthernet0/1/16.1] quit
[*UPE1] commit

      # Configure NPE1.

      [~NPE1] vsi s1 static
[*NPE1-vsi-s1] pwsignal ldp
[*NPE1-vsi-s1-ldp] vsi-id 10
[*NPE1-vsi-s1-ldp] peer 1.1.1.1
[*NPE1-vsi-s1-ldp] quit
[*NPE1-vsi-s1] quit
[*NPE1] interface gigabitethernet 0/1/0
[*NPE1-GigabitEthernet0/1/0] undo shutdown
[*NPE1-GigabitEthernet0/1/0] portswitch
[*NPE1-GigabitEthernet0/1/0] quit
[*NPE1] interface gigabitethernet 0/1/0.1
[*NPE1-GigabitEthernet0/1/0.1] shutdown
[*NPE1-GigabitEthernet0/1/0.1] vlan-type dot1q 10
[*NPE1-GigabitEthernet0/1/0.1] l2 binding vsi s1
[*NPE1-GigabitEthernet0/1/0.1] undo shutdown
[*NPE1-GigabitEthernet0/1/0.1] quit
[*NPE1] commit

      # Configure NPE2.

      [~NPE2] vsi s1 static
[*NPE2-vsi-s1] pwsignal ldp
[*NPE2-vsi-s1-ldp] vsi-id 10
[*NPE2-vsi-s1-ldp] peer 1.1.1.1
[*NPE2-vsi-s1-ldp] quit
[*NPE2-vsi-s1] quit
[*NPE2] interface gigabitethernet 0/1/0
[*NPE2-GigabitEthernet0/1/0] undo shutdown
[*NPE2-GigabitEthernet0/1/0] portswitch
[*NPE2-GigabitEthernet0/1/0] quit
[*NPE2] interface gigabitethernet 0/1/0.1
[*NPE2-GigabitEthernet0/1/0.1] shutdown
[*NPE2-GigabitEthernet0/1/0.1] vlan-type dot1q 10
[*NPE2-GigabitEthernet0/1/0.1] l2 binding vsi s1
[*NPE2-GigabitEthernet0/1/0.1] undo shutdown
[*NPE2-GigabitEthernet0/1/0.1] quit
[*NPE2] commit

      # Configure UPE2.

      [~UPE2] vsi s1 static
[*UPE2-vsi-s1] pwsignal ldp
[*UPE2-vsi-s1-ldp] vsi-id 10
[*UPE2-vsi-s1-ldp] peer 4.4.4.4
[*UPE2-vsi-s1-ldp] peer 5.5.5.5
[*UPE2-vsi-s1-ldp] quit
[*UPE2-vsi-s1] quit
[*UPE2] interface gigabitethernet 0/1/16
[*UPE2-GigabitEthernet0/1/16] undo shutdown
[*UPE2-GigabitEthernet0/1/16] quit
[*UPE2] interface gigabitethernet 0/1/16.1
[*UPE2-GigabitEthernet0/1/16.1] shutdown
[*UPE2-GigabitEthernet0/1/16.1] vlan-type dot1q 10
[*UPE2-GigabitEthernet0/1/16.1] l2 binding vsi s1
[*UPE2-GigabitEthernet0/1/16.1] undo shutdown
[*UPE2-GigabitEthernet0/1/16.1] quit
[*UPE2] commit

      # Configure NPE3.

      [~NPE3] vsi s1 static
[*NPE3-vsi-s1] pwsignal ldp
[*NPE3-vsi-s1-ldp] vsi-id 10
[*NPE3-vsi-s1-ldp] peer 6.6.6.6
[*NPE3-vsi-s1-ldp] quit
[*NPE3-vsi-s1] quit
[*NPE3] interface gigabitethernet 0/1/0
[*NPE3-GigabitEthernet0/1/0] undo shutdown
[*NPE3-GigabitEthernet0/1/0] portswitch
[*NPE3-GigabitEthernet0/1/0] quit
[*NPE3] interface gigabitethernet 0/1/0.1
[*NPE3-GigabitEthernet0/1/0.1] shutdown
[*NPE3-GigabitEthernet0/1/0.1] vlan-type dot1q 10
[*NPE3-GigabitEthernet0/1/0.1] l2 binding vsi s1
[*NPE3-GigabitEthernet0/1/0.1] undo shutdown
[*NPE3-GigabitEthernet0/1/0.1] quit
[*NPE3] commit

      # Configure NPE4.

      [~NPE4] vsi s1 static
[*NPE4-vsi-s1] pwsignal ldp
[*NPE4-vsi-s1-ldp] vsi-id 10
[*NPE4-vsi-s1-ldp] peer 6.6.6.6
[*NPE4-vsi-s1-ldp] quit
[*NPE4-vsi-s1] quit
[*NPE4] interface gigabitethernet 0/1/0
[*NPE4-GigabitEthernet0/1/0] undo shutdown
[*NPE4-GigabitEthernet0/1/0] portswitch
[*NPE4-GigabitEthernet0/1/0] quit
[*NPE4] interface gigabitethernet 0/1/0.1
[*NPE4-GigabitEthernet0/1/0.1] shutdown
[*NPE4-GigabitEthernet0/1/0.1] vlan-type dot1q 10
[*NPE4-GigabitEthernet0/1/0.1] l2 binding vsi s1
[*NPE4-GigabitEthernet0/1/0.1] undo shutdown
[*NPE4-GigabitEthernet0/1/0.1] quit
[*NPE4] commit

  6. Enable STP globally on the NPEs.

    # Configure an MST region. This example uses the configuration of NPE1. The configurations of NPE2, NPE3, and NPE4 are the same as the configuration of NPE1. For configuration details, see Configuration Files in this example.

    [~NPE1] stp region-configuration
[*NPE1-mst-region] region-name RG1
[*NPE1-mst-region] commit
[~NPE1-mst-region] quit
[~NPE1] stp enable

    # Configure the STP priority 0 for NPE3 in MSTI0.

    [~NPE3] stp instance 0 priority 0
[*NPE3] commit

    # Configure the STP priority 4096 for NPE4 in MSTI0.

    [~NPE4] stp instance 0 priority 4096
[*NPE4] commit

    NPE1 and NPE2 use the default STP priority 32768. Therefore, NPE3 functions as the root bridge, and NPE4 functions as the backup root bridge.

  7. Configure E-STP.

    If service VSIs are bound to an mVSI, configure STP for the mVSI but not for the service VSIs. The mVSI status determines the service VSI status.

    # Configure NPE1.

    [~NPE1] vsi m1 static
[*NPE1-vsi-m1] pwsignal ldp
[*NPE1-vsi-m1-ldp] peer 3.3.3.3 pw pw1
[*NPE1-vsi-m1-ldp-pw-pw1] stp enable
[*NPE1-vsi-m1-ldp-pw-pw1] stp cost 2
[*NPE1-vsi-m1-ldp-pw-pw1] quit
[*NPE1-vsi-m1-ldp] quit
[*NPE1-vsi] quit
[*NPE1] interface gigabitethernet 0/1/0
[*NPE1-GigabitEthernet0/1/0] stp enable
[*NPE1-GigabitEthernet0/1/0] stp vpls-subinterface enable
[*NPE1-GigabitEthernet0/1/0] stp instance 0 cost 2
[*NPE1-GigabitEthernet0/1/0] quit
[*NPE1] commit

    # Configure NPE2.

    [~NPE2] vsi m1 static
[*NPE2-vsi-m1] pwsignal ldp
[*NPE2-vsi-m1-ldp] peer 2.2.2.2 pw pw1
[*NPE2-vsi-m1-ldp-pw-pw1] stp enable
[*NPE2-vsi-m1-ldp-pw-pw1] stp cost 2
[*NPE2-vsi-m1-ldp-pw-pw1] quit
[*NPE2-vsi-m1-ldp] quit
[*NPE2-vsi] quit
[*NPE2] interface gigabitethernet 0/1/0
[*NPE2-GigabitEthernet0/1/0] stp enable
[*NPE2-GigabitEthernet0/1/0] stp vpls-subinterface enable
[*NPE2-GigabitEthernet0/1/0] stp instance 0 cost 5
[*NPE2-GigabitEthernet0/1/0] quit
[*NPE2] commit

    # Configure NPE3.

    [~NPE3] vsi m1 static
[*NPE3-vsi-m1] pwsignal ldp
[*NPE3-vsi-m1-ldp] peer 5.5.5.5 pw pw1
[*NPE3-vsi-m1-ldp-pw-pw1] stp enable
[*NPE3-vsi-m1-ldp-pw-pw1] stp cost 2
[*NPE3-vsi-m1-ldp-pw-pw1] quit
[*NPE3-vsi-m1-ldp] quit
[*NPE3-vsi] quit
[*NPE3] interface gigabitethernet 0/1/0
[*NPE3-GigabitEthernet0/1/0] stp enable
[*NPE3-GigabitEthernet0/1/0] stp vpls-subinterface enable
[*NPE3-GigabitEthernet0/1/0] stp instance 0 cost 2
[*NPE3-GigabitEthernet0/1/0] quit
[*NPE3] commit

    # Configure NPE4.

    [~NPE4] vsi m1 static
[*NPE4-vsi-m1] pwsignal ldp
[*NPE4-vsi-m1-ldp] peer 4.4.4.4 pw pw1
[*NPE4-vsi-m1-ldp-pw-pw1] stp enable
[*NPE4-vsi-m1-ldp-pw-pw1] stp cost 2
[*NPE4-vsi-m1-ldp-pw-pw1] quit
[*NPE4-vsi-m1-ldp] quit
[*NPE4-vsi] quit
[*NPE4] interface gigabitethernet 0/1/0
[*NPE4-GigabitEthernet0/1/0] stp enable
[*NPE4-GigabitEthernet0/1/0] stp vpls-subinterface enable
[*NPE4-GigabitEthernet0/1/0] stp instance 0 cost 5
[*NPE4-GigabitEthernet0/1/0] quit
[*NPE4] commit

  8. Configure CEs.

    # Configure CE1.

    [~CE1] interface gigabitethernet 0/1/0.1
[*CE1-GigabitEthernet0/1/0.1] shutdown
[*CE1-GigabitEthernet0/1/0.1] vlan-type dot1q 10
[*CE1-GigabitEthernet0/1/0.1] ip address 192.168.1.1 24
[*CE1-GigabitEthernet0/1/0.1] undo shutdown
[*CE1-GigabitEthernet0/1/0.1] quit
[*CE1] commit

    # Configure CE2.

    [~CE2] interface gigabitethernet 0/1/0.1
[*CE2-GigabitEthernet0/1/0.1] shutdown
[*CE2-GigabitEthernet0/1/0.1] vlan-type dot1q 10
[*CE2-GigabitEthernet0/1/0.1] ip address 192.168.1.2 24
[*CE2-GigabitEthernet0/1/0.1] undo shutdown
[*CE2-GigabitEthernet0/1/0.1] quit
[*CE2] commit

  9. Verify the configuration.

    • Run the display stp brief command on the NPEs to check STP information. The command outputs show that only the status of GE 0/1/0 on NPE2 is DISCARDING, meaning that GE 0/1/0 is blocked.

      [~NPE1] display stp brief
 MSTID   Port                        Role  STP State     Protection
    0    GigabitEthernet0/1/0        ROOT  FORWARDING      NONE
    0    m1-pw1                      DESI  FORWARDING      NONE                  
[~NPE2] display stp brief
 MSTID  Port                        Role  STP State     Protection
    0    GigabitEthernet0/1/0        ALTE  DISCARDING      NONE
    0    m1-pw1                      ROOT  FORWARDING      NONE
[~NPE3] display stp brief
 MSTID  Port                        Role  STP State     Protection
    0    GigabitEthernet0/1/0        DESI  FORWARDING      NONE
    0    m1-pw1                      DEST  FORWARDING      NONE
[~NPE4] display stp brief
 MSTID  Port                        Role  STP State     Protection
    0    GigabitEthernet0/1/0        DESI  FORWARDING      NONE
    0    m1-pw1                      ROOT  FORWARDING      NONE

    • Run the display vsi name s1 verbose command on NPE1. The command output shows that the VSI named s1 has established a PW with UPE1 and the VSI status is Up.

      [~NPE1] display vsi name s1 verbose
 ***VSI Name               : s1
    Administrator VSI      : no
    Isolate Spoken         : disable
    VSI Index              : 2
    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
    Multicast Fast Swicth  : disable
    Create Time            : 0 days, 1 hours, 19 minutes, 38 seconds
    VSI State              : up
    Resource Status        : Valid

    VSI ID                 : 10
   *Peer Router ID         : 1.1.1.1
    primary or secondary   : primary
    ignore-standby-state   : no
    VC Label               : 32891
    Peer Type              : dynamic
    Session                : up
    Tunnel ID              : 0x0000000001004c4b41 
    Broadcast Tunnel ID    : --
    Broad BackupTunnel ID  : -- 
    CKey                   : 2
    NKey                   : 1862271177
    Stp Enable             : 0
    PwIndex                : 2
    Control Word           : disable

    Interface Name         : GigabitEthernet0/1/0.1
    State                  : up
    Access Port            : false
    Last Up Time           : 2013/12/26 17:35:12
    Total Up Time          : 0 days, 1 hours, 19 minutes, 38 seconds

  **PW Information:

   *Peer Ip Address        : 1.1.1.1
    PW State               : up
    Local VC Label         : 32891
    Remote VC Label        : 32890
    Remote Control Word    : disable
    PW Type                : label
    Tunnel ID              : 0x0000000001004c4b41 
    Broadcast Tunnel ID    : --
    Broad BackupTunnel ID  : --
    Ckey                   : 2
    Nkey                   : 1862271177
    Main PW Token          : 0x0
    Slave PW Token         : 0x0
    Tnl Type               : ldp
    OutInterface           : LDP LSP
    Backup OutInterface    : --
    Stp Enable             : 0
    Mac Flapping           : 0
    PW Last Up Time        : 2013/12/26 17:35:12
    PW Total Up Time       : 0 days, 1 hours, 19 minutes, 38 seconds
[~NPE2] display vsi name s1 verbose
 ***VSI Name               : s1
    Administrator VSI      : no
    Isolate Spoken         : disable
    VSI Index              : 2
    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
    Multicast Fast Swicth  : disable
    Create Time            : 0 days, 1 hours, 23 minutes, 17 seconds
    VSI State              : up
    Resource Status        : Valid

    VSI ID                 : 10
   *Peer Router ID         : 1.1.1.1
    primary or secondary   : primary
    ignore-standby-state   : no
    VC Label               : 32891
    Peer Type              : dynamic
    Session                : up
    Tunnel ID              : 0x0000000001004c4b41 
    Broadcast Tunnel ID    : --
    Broad BackupTunnel ID  : -- 
    CKey                   : 2
    NKey                   : 1493172425
    Stp Enable             : 0
    PwIndex                : 2
    Control Word           : disable
 
    Interface Name         : GigabitEthernet0/1/0.1
    State                  : up
    Access Port            : false
    Last Up Time           : 2013/12/26 17:36:16
    Total Up Time          : 0 days, 1 hours, 23 minutes, 17 seconds

  **PW Information:

   *Peer Ip Address        : 1.1.1.1
    PW State               : up
    Local VC Label         : 32891
    Remote VC Label        : 32891
    Remote Control Word    : disable
    PW Type                : label
    Tunnel ID              : 0x0000000001004c4b41 
    Broadcast Tunnel ID    : --
    Broad BackupTunnel ID  : --
    Ckey                   : 2
    Nkey                   : 1493172425
    Main PW Token          : 0x0
    Slave PW Token         : 0x0
    Tnl Type               : ldp
    OutInterface           : LDP LSP
    Backup OutInterface    : --
    Stp Enable             : 0
    Mac Flapping           : 0
    PW Last Up Time        : 2013/12/26 17:36:16
    PW Total Up Time       : 0 days, 1 hours, 23 minutes, 17 seconds

    • CE1 and CE2 can ping each other successfully. The following example uses the command output on CE1:

      [~CE1] ping 192.168.1.2
  PING 192.168.1.2: 56  data bytes, press CTRL_C to break
    Reply from 192.168.1.2: bytes=56 Sequence=1 ttl=255 time=172 ms
    Reply from 192.168.1.2: bytes=56 Sequence=2 ttl=255 time=156 ms
    Reply from 192.168.1.2: bytes=56 Sequence=3 ttl=255 time=156 ms
    Reply from 192.168.1.2: bytes=56 Sequence=4 ttl=255 time=156 ms
    Reply from 192.168.1.2: bytes=56 Sequence=5 ttl=255 time=156 ms

  --- 192.168.1.2 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 156/159/172 ms

Configuration Files

  • UPE1 configuration file

    #
sysname UPE1
#
mpls lsr-id 1.1.1.1
#
mpls
#
mpls l2vpn
#
vsi s1 static
 pwsignal ldp
  vsi-id 10
  peer 2.2.2.2
  peer 3.3.3.3
#
mpls ldp
#
interface GigabitEthernetl/0/0
 undo shutdown
 ip address 10.1.1.1 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/8
 undo shutdown
 ip address 10.1.2.1 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/16
 undo shutdown
#
interface GigabitEthernet0/1/16.1
 vlan-type dot1q 10
 l2 binding vsi s1
#
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 10.1.1.0 0.0.0.255
  network 10.1.2.0 0.0.0.255
#
return

  • UPE2 configuration file

    #
sysname UPE2
#
mpls lsr-id 6.6.6.6
#
mpls
#
mpls l2vpn
#
vsi s1 static
 pwsignal ldp
  vsi-id 10
  peer 4.4.4.4
  peer 5.5.5.5
#
mpls ldp
#
interface GigabitEthernetl/0/0
 undo shutdown
 ip address 10.5.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/8
 undo shutdown
 ip address 10.5.2.2 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/16
 undo shutdown
#
interface GigabitEthernet0/1/16.1
 vlan-type dot1q 10
 undo shutdown
 l2 binding vsi s1
#
interface LoopBack1
 ip address 6.6.6.6 255.255.255.255
#
ospf 1
 area 0.0.0.0
  network 6.6.6.6 0.0.0.0
  network 10.5.1.0 0.0.0.255
  network 10.5.2.0 0.0.0.255
#
return

  • NPE1 configuration file

    #
sysname NPE1
#
stp enable
#
stp region-configuration
 region-name RG1
#
mpls lsr-id 2.2.2.2
#
mpls
#
mpls l2vpn
#
vsi m1 static
 pwsignal ldp
  vsi-id 100
  peer 3.3.3.3
  peer 3.3.3.3 pw pw1
    stp enable
    stp cost 2
 admin-vsi
#
vsi s1 static
 pwsignal ldp
  vsi-id 10
  peer 1.1.1.1
#
mpls ldp
#
interface GigabitEthernet0/1/0
 undo shutdown
 portswitch
 stp enable
 stp vpls-subinterface enable
 stp instance 0 cost 2
#
interface GigabitEthernet0/1/0.1
 vlan-type dot1q 10
 l2 binding vsi s1
#
interface GigabitEthernet0/1/8
 undo shutdown
 ip address 10.8.1.1 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/16
 undo shutdown
 ip address 10.1.1.2 255.255.255.0
 mpls
 mpls ldp
#
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 10.1.1.0 0.0.0.255
  network 10.8.1.0 0.0.0.255
#
return

  • NPE2 configuration file

    #
sysname NPE2
#
stp enable
#
stp region-configuration
 region-name RG1
#
mpls lsr-id 3.3.3.3
#
mpls
#
mpls l2vpn
#
vsi m1 static
 pwsignal ldp
  vsi-id 100
  peer 2.2.2.2
  peer 2.2.2.2 pw pw1
    stp enable
    stp cost 2
 admin-vsi
#
vsi s1 static
 pwsignal ldp
  vsi-id 10
  peer 1.1.1.1
#
mpls ldp
#
interface GigabitEthernet0/1/0
 undo shutdown
 portswitch
 stp enable
 stp vpls-subinterface enable
 stp instance 0 cost 5
#
interface GigabitEthernet0/1/0.1
 vlan-type dot1q 10
 l2 binding vsi s1
#
interface GigabitEthernet0/1/8
 undo shutdown
 ip address 10.8.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/16
 undo shutdown
 ip address 10.1.2.2 255.255.255.0
 mpls
 mpls ldp
#
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 10.1.2.0 0.0.0.255
  network 10.8.1.0 0.0.0.255
#
return

  • NPE3 configuration file

    #
sysname NPE3
#
stp instance 0 priority 0
stp enable
#
stp region-configuration
 region-name RG1
#
mpls lsr-id 4.4.4.4
#
mpls
#
mpls l2vpn
#
vsi m1 static
 pwsignal ldp
  vsi-id 100
  peer 5.5.5.5
  peer 5.5.5.5 pw pw1
    stp enable
    stp cost 2
 admin-vsi
#
vsi s1 static
 pwsignal ldp
  vsi-id 10
  peer 6.6.6.6
#
mpls ldp
#
interface GigabitEthernet0/1/0
 undo shutdown
 portswitch
 stp enable
 stp vpls-subinterface enable
 stp instance 0 cost 2
#
interface GigabitEthernet0/1/0.1
 vlan-type dot1q 10
 l2 binding vsi s1
#
interface GigabitEthernet0/1/8
 undo shutdown
 ip address 10.9.1.1 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/16
 undo shutdown
 ip address 10.5.1.1 255.255.255.0
 mpls
 mpls ldp
#
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 10.5.1.0 0.0.0.255
  network 10.9.1.0 0.0.0.255
#
return

  • NPE4 configuration file

    #
sysname NPE4
#
stp instance 0 priority 4096
stp enable
#
stp region-configuration
 region-name RG1
#
mpls lsr-id 5.5.5.5
#
mpls
#
mpls l2vpn
#
vsi m1 static
 pwsignal ldp
  vsi-id 100
  peer 4.4.4.4
  peer 4.4.4.4 pw pw1
    stp enable
    stp cost 2
 admin-vsi
#
vsi s1 static
 pwsignal ldp
  vsi-id 10
  peer 6.6.6.6
#
mpls ldp
#
interface GigabitEthernet0/1/0
 undo shutdown
 portswitch
 stp enable
 stp vpls-subinterface enable
 stp instance 0 cost 5
#
interface GigabitEthernet0/1/0.1
 vlan-type dot1q 10
 l2 binding vsi s1
#
interface GigabitEthernet0/1/8
 undo shutdown
 ip address 10.9.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/1/16
 ip address 10.5.2.1 255.255.255.0
 mpls
 mpls ldp
#
interface LoopBack1
 ip address 5.5.5.5 255.255.255.255
#
ospf 1
 area 0.0.0.0
  network 5.5.5.5 0.0.0.0
  network 10.5.2.0 0.0.0.255
  network 10.9.1.0 0.0.0.255
#
return

  • CE1 configuration file

    #
sysname CE1
#
interface GigabitEthernet0/1/0
 undo shutdown
#
interface GigabitEthernet0/1/0.1
 vlan-type dot1q 10
 ip address 192.168.1.1 255.255.255.0
#
return

  • CE2 configuration file

    #
sysname CE2
#
interface GigabitEthernet0/1/0
 undo shutdown
#
interface GigabitEthernet0/1/0.1
 vlan-type dot1q 10
 ip address 192.168.1.2 255.255.255.0
#
return
Parent Topic: Configuration Examples for MSTP
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
< Previous topic Next topic >