Example for Configuring a Remote BGP VPWS Connection

This section provides an example for configuring a remote BGP VPWS connection. If two CEs connect to different PEs, you can configure a remote BGP VPWS connection for the two CEs to communicate.

Networking Requirements

On the network shown in Figure 1, CE1 and CE2 connect to different PEs. A remote BGP VPWS connection needs to be established between PE1 and PE2 for the two CEs to communicate.

Figure 1 Configuring a remote BGP VPWS connection

  • Interfaces 1 and 2 in this example represent GE 0/1/0 and GE 0/1/8, respectively.



Configuration Roadmap

The configuration roadmap is as follows:

  1. Configure a routing protocol on the PEs and P of the backbone network to ensure IP connectivity and configure basic MPLS functions and LDP.

  2. Configure PEs to exchange VPWS information as BGP peers.

  3. Enable MPLS L2VPN on PEs and create a remote BGP VPWS connection between them.

Data Preparation

To complete the configuration, you need the following data:

  • AS number

  • L2VPN instance name

  • L2VPN instance RD and VPN targets

  • CE names and IDs

Procedure

  1. Configure IP addresses.

    # Configure CE1.

    <HUAWEI> system-view
[~HUAWEI] sysname CE1
[*HUAWEI] commit
[~CE1] interface gigabitethernet 0/1/0
[*CE1-GigabitEthernet0/1/0] ip address 10.1.1.1 24
[*CE1-GigabitEthernet0/1/0] quit
[*CE1] commit

    # Configure CE2.

    <HUAWEI> system-view
[~HUAWEI] sysname CE2
[*HUAWEI] commit
[~CE2] interface gigabitethernet 0/1/0
[*CE2-GigabitEthernet0/1/0] ip address 10.1.1.2 24
[*CE2-GigabitEthernet0/1/0] quit
[*CE2] commit

    # Configure 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 0/1/8
[*PE1-GigabitEthernet0/1/8] ip address 192.168.1.1 24
[*PE1-GigabitEthernet0/1/8] quit
[*PE1] commit

    # Configure the P.

    <HUAWEI> system-view
[~HUAWEI] sysname P
[*HUAWEI] commit
[~P] interface loopback 1
[*P-LoopBack1] ip address 2.2.2.9 32
[*P-LoopBack1] quit
[*P] interface gigabitethernet 0/1/0
[*P-GigabitEthernet0/1/0] ip address 192.168.1.2 24
[*P-GigabitEthernet0/1/0] quit
[*P] interface gigabitethernet 0/1/8
[*P-GigabitEthernet0/1/8] ip address 192.168.10.1 24
[*P-GigabitEthernet0/1/8] quit
[*P] commit

    # Configure PE2.

    <HUAWEI> system-view
[~HUAWEI] sysname PE2
[*HUAWEI] commit
[*PE2] interface loopback 1
[*PE2-LoopBack1] ip address 3.3.3.9 24
[*PE2-LoopBack1] quit
[~PE2] interface gigabitethernet 0/1/8
[*PE2-GigabitEthernet0/1/8] ip address 192.168.10.2 24
[*PE2-GigabitEthernet0/1/8] quit
[*PE2] commit

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

    # Configure PE1.

    [~PE1] ospf 1
[*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] quit
[*PE1-ospf-1] quit
[*PE1] commit

    # Configure the P.

    [~P] ospf 1
[*P-ospf-1] area 0
[*P-ospf-1-area-0.0.0.0] network 2.2.2.9 0.0.0.0
[*P-ospf-1-area-0.0.0.0] network 192.168.1.0 0.0.0.255
[*P-ospf-1-area-0.0.0.0] network 192.168.10.0 0.0.0.255
[*P-ospf-1-area-0.0.0.0] quit
[*P-ospf-1] quit
[*P] commit

    # Configure PE2.

    [~PE2] ospf 1
[*PE2-ospf-1] area 0
[*PE2-ospf-1-area-0.0.0.0] network 3.3.3.9 0.0.0.0
[*PE2-ospf-1-area-0.0.0.0] network 192.168.10.0 0.0.0.255
[*PE2-ospf-1-area-0.0.0.0] quit
[*PE2-ospf-1] quit
[*PE2] commit

  3. Configure basic MPLS functions and establish an LSP.

    # Configure PE1.

    [~PE1] mpls lsr-id 1.1.1.9
[*PE1] mpls
[*PE1-mpls] quit
[*PE1] mpls ldp
[*PE1-mpls-ldp] quit
[*PE1] interface gigabitethernet 0/1/8
[*PE1-GigabitEthernet0/1/8] mpls
[*PE1-GigabitEthernet0/1/8] mpls ldp
[*PE1-GigabitEthernet0/1/8] quit
[*PE1] commit

    # Configure the P.

    [~P] mpls lsr-id 2.2.2.9
[*P] mpls
[*P-mpls] quit
[*P] mpls ldp
[*P-mpls-ldp] quit
[*P] interface gigabitethernet 0/1/0
[*P-GigabitEthernet0/1/0] mpls
[*P-GigabitEthernet0/1/0] mpls ldp
[*PE1-GigabitEthernet0/1/0] quit
[*P] interface gigabitethernet 0/1/8
[*P-GigabitEthernet0/1/8] mpls
[*P-GigabitEthernet0/1/8] mpls ldp
[*P-GigabitEthernet0/1/8] quit
[*P] commit

    # Configure PE2.

    [~PE1] mpls lsr-id 3.3.3.9
[*PE1] mpls
[*PE1-mpls] quit
[*PE1] mpls ldp
[*PE1-mpls-ldp] quit
[*PE1] interface gigabitethernet 0/1/8
[*PE1-GigabitEthernet0/1/8] mpls
[*PE1-GigabitEthernet0/1/8] mpls ldp
[*PE1-GigabitEthernet0/1/8] quit
[*PE1] commit

  4. Configure PEs to exchange VPWS information as BGP peers.

    # Configure PE1.

    [~PE1] bgp 100
[*PE1-bgp] peer 3.3.3.9 as-number 100
[*PE1-bgp] peer 3.3.3.9 connect-interface loopback 1
[*PE1-bgp] l2vpn-ad-family
[*PE1-bgp-af-l2vpn-ad] peer 3.3.3.9 enable
[*PE1-bgp-af-l2vpn-ad] peer 3.3.3.9 signaling vpws
[*PE1-bgp-af-l2vpn-ad] quit
[*PE1-bgp] quit
[*PE1] commit

    # Configure PE2.

    [~PE2] bgp 100
[*PE2-bgp] peer 1.1.1.9 as-number 100
[*PE2-bgp] peer 1.1.1.9 connect-interface loopback 1
[*PE2-bgp] l2vpn-ad-family
[*PE2-bgp-af-l2vpn-ad] peer 1.1.1.9 enable
[*PE2-bgp-af-l2vpn-ad] peer 1.1.1.9 signaling vpws
[*PE2-bgp-af-l2vpn-ad] quit
[*PE2-bgp] quit
[*PE2] commit

  5. Configure a remote BGP VPWS connection.

    # Configure PE1.

    [~PE1] mpls l2vpn
[*PE1-l2vpn] quit
[*PE1] mpls l2vpn vpn1 encapsulation ethernet
[*PE1-mpls-l2vpn-vpn1] route-distinguisher 100:1
[*PE1-mpls-l2vpn-vpn1] vpn-target 200:1 both
[*PE1-mpls-l2vpn-vpn1] ce ce1 id 1 range 10
[*PE1-mpls-l2vpn-vpn1-ce-ce1] connection ce-offset 2 interface gigabitethernet 0/1/0
[*PE1-mpls-l2vpn-vpn1-ce-ce1] quit
[*PE1] commit

    # Configure PE2.

    [~PE2] mpls l2vpn
[*PE2-l2vpn] quit
[*PE2] mpls l2vpn vpn1 encapsulation ethernet
[*PE2-mpls-l2vpn-vpn1] route-distinguisher 100:1
[*PE2-mpls-l2vpn-vpn1] vpn-target 200:1 both
[*PE2-mpls-l2vpn-vpn1] ce ce2 id 2 range 10
[*PE2-mpls-l2vpn-vpn1-ce-ce2] connection ce-offset 1 interface gigabitethernet 0/1/0
[*PE2-mpls-l2vpn-vpn1-ce-ce2] quit
[*PE2-mpls-l2vpn-vpn1] quit
[*PE2] commit

  6. Verify the configuration.

    After completing the configuration, run the display mpls l2vpn connection command on each PE. The command output shows that a VPWS connection has been established and is in the Up state. The following example uses the command output on PE1.

    [~PE1] display mpls l2vpn connection
1 total connections, 
connections: 1 up, 0 down, 0 local, 1 remote, 0 unknown

VPN name: vpn1,
1 total connections, 
connections: 1 up, 0 down , 0 local, 1 remote, 0 unknown

  CE name: ce1, id: 1,
  Rid type status peer-id         route-distinguisher interface    
  primary or not
----------------------------------------------------------------------------
  2   rmt  up     3.3.3.9         100:1               GigabitEthernet0/1/0
  primary

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

    [~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=7 ms
    Reply from 10.1.1.2: bytes=56 Sequence=2 ttl=255 time=3 ms
    Reply from 10.1.1.2: bytes=56 Sequence=3 ttl=255 time=4 ms
    Reply from 10.1.1.2: bytes=56 Sequence=4 ttl=255 time=2 ms
    Reply from 10.1.1.2: bytes=56 Sequence=5 ttl=255 time=3 ms

  --- 10.1.1.2 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 2/3/7 ms

Configuration Files

  • CE1 configuration file

    #
sysname CE1
#
interface GigabitEthernet0/1/0
 undo shutdown  
 ip address 10.1.1.1 255.255.255.0
#               
return

  • CE2 configuration file

    #
sysname CE2
#
interface GigabitEthernet0/1/0
 undo shutdown  
 ip address 10.1.1.2 255.255.255.0
#               
return

  • PE1 configuration file

    #
sysname PE1
#
mpls lsr-id 1.1.1.9
#
mpls
#
mpls l2vpn
#
mpls ldp
#
interface GigabitEthernet0/1/0
 undo shutdown  
#               
interface GigabitEthernet0/1/8
 undo shutdown  
 ip address 192.168.1.1 255.255.255.0
 mpls           
 mpls ldp       
#               
interface LoopBack1
 ip address 1.1.1.9 255.255.255.255
#               
mpls l2vpn vpn1 encapsulation ethernet
 route-distinguisher 100:1
 vpn-target 200:1 import-extcommunity
 vpn-target 200:1 export-extcommunity
 ce ce1 id 1 range 10 default-offset 0
  connection ce-offset 2 interface GigabitEthernet0/1/0
#               
bgp 100         
 peer 3.3.3.9 as-number 100
 peer 3.3.3.9 connect-interface LoopBack1
 #              
 ipv4-family unicast
  undo synchronization
  peer 3.3.3.9 enable
 #              
 l2vpn-ad-family
  policy vpn-target
  peer 3.3.3.9 enable
  peer 3.3.3.9 signaling vpws
#               
ospf 1          
 area 0.0.0.0   
  network 1.1.1.9 0.0.0.0
  network 192.168.1.0 0.0.0.255
#
return

  • P configuration file

    #
sysname P
#
mpls lsr-id 2.2.2.9
#
mpls
#
mpls ldp
#
interface GigabitEthernet0/1/0
 undo shutdown  
 ip address 192.168.1.2 255.255.255.0
 mpls           
 mpls ldp       
#               
interface GigabitEthernet0/1/8
 undo shutdown  
 ip address 192.168.10.1 255.255.255.0
 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 192.168.1.0 0.0.0.255
  network 192.168.10.0 0.0.0.255
#               
return

  • PE2 configuration file

    #
sysname PE2
#
mpls lsr-id 3.3.3.9
#
mpls
#
mpls l2vpn
#
mpls ldp
#               
interface GigabitEthernet0/1/0
 undo shutdown  
#               
interface GigabitEthernet0/1/8
 undo shutdown  
 ip address 192.168.10.2 255.255.255.0
 mpls           
 mpls ldp       
#               
interface LoopBack1
 ip address 3.3.3.9 255.255.255.255
#               
mpls l2vpn vpn1 encapsulation ethernet
 route-distinguisher 100:1
 vpn-target 200:1 import-extcommunity
 vpn-target 200:1 export-extcommunity
 ce ce2 id 2 range 10 default-offset 0
  connection ce-offset 1 interface GigabitEthernet0/1/0
#               
bgp 100         
 peer 1.1.1.9 as-number 100
 peer 1.1.1.9 connect-interface LoopBack1
 #              
 ipv4-family unicast
  undo synchronization
  peer 1.1.1.9 enable
 #              
 l2vpn-ad-family
  policy vpn-target
  peer 1.1.1.9 enable
  peer 1.1.1.9 signaling vpws
#               
ospf 1          
 area 0.0.0.0   
  network 3.3.3.9 0.0.0.0
  network 192.168.10.0 0.0.0.255
#               
return
Parent Topic: Configuration Examples for VPWS
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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