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Example for Configuring BGP/MPLS IP VPN

Networking Requirements

As shown in Figure 1:
  • CE1 connects to the headquarters R&D area of a company, and CE3 connects to the branch R&D area. CE1 and CE3 belong to vpna.
  • CE2 connects to the headquarters non-R&D area, and CE4 connects to the branch non-R&D area. CE2 and CE4 belong to vpnb.

BGP/MPLS IP VPN needs to be deployed for the company to ensure secure communication between the headquarters and branch.

Figure 1 Networking diagram for configuring BGP/MPLS IP VPN

Configuration Roadmap

The configuration roadmap is as follows:

  1. Configure OSPF between the P and PEs to ensure IP connectivity on the backbone network.
  2. Configure basic MPLS capabilities and MPLS LDP on the P and PEs to establish MPLS LSP tunnels for VPN data transmission on the backbone network.
  3. Configure MP-IBGP on PE1 and PE2 to enable them to exchange VPN routing information.
  4. Configure VPN instances vpna and vpnb on PE1 and PE2. Set the VPN target of vpna to 111:1 and the VPN target of vpnb to 222:2. This configuration allows users in the same VPN to communicate with each other and isolates users on different VPNs. Bind the PE interfaces connected to CEs to the corresponding VPN instances to provide access for VPN users.
  5. Configure EBGP on the CEs and PEs to exchange VPN routing information.

Procedure

  1. Configure an IGP on the MPLS backbone network so that PEs and P can communicate with each other.

    # Configure PE1.

    <HUAWEI> system-view
[HUAWEI] sysname PE1
[PE1] interface loopback 1
[PE1-LoopBack1] ip address 1.1.1.9 32
[PE1-LoopBack1] quit
[PE1] vlan batch 10 20 30
[PE1] interface gigabitethernet 0/0/1
[PE1-GigabitEthernet0/0/1] port link-type trunk
[PE1-GigabitEthernet0/0/1] port trunk allow-pass vlan 10 
[PE1-GigabitEthernet0/0/1] quit
[PE1] interface gigabitethernet 0/0/2
[PE1-GigabitEthernet0/0/2] port link-type trunk
[PE1-GigabitEthernet0/0/2] port trunk allow-pass vlan 20 
[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 30 
[PE1-GigabitEthernet0/0/3] quit
[PE1] interface vlanif 30
[PE1-Vlanif30] ip address 172.1.1.1 24
[PE1-Vlanif30] quit
[PE1] ospf 1
[PE1-ospf-1] area 0
[PE1-ospf-1-area-0.0.0.0] network 172.1.1.0 0.0.0.255
[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] quit
[PE1-ospf-1] quit

    # Configure P.

    <HUAWEI> system-view
[HUAWEI] sysname P
[P] interface loopback 1
[P-LoopBack1] ip address 2.2.2.9 32
[P-LoopBack1] quit
[P] vlan batch 30 60
[P] interface gigabitethernet 0/0/1 
[P-GigabitEthernet0/0/1] port link-type trunk
[P-GigabitEthernet0/0/1] port trunk allow-pass vlan 30
[P-GigabitEthernet0/0/1] quit
[P] interface gigabitethernet 0/0/2 
[P-GigabitEthernet0/0/2] port link-type trunk
[P-GigabitEthernet0/0/2] port trunk allow-pass vlan 60
[P-GigabitEthernet0/0/2] quit
[P] interface vlanif 30
[P-Vlanif30] ip address 172.1.1.2 24
[P-Vlanif30] quit
[P] interface vlanif 60
[P-Vlanif60] ip address 172.2.1.1 24
[P-Vlanif60] quit
[P] ospf 1
[P-ospf-1] area 0
[P-ospf-1-area-0.0.0.0] network 172.1.1.0 0.0.0.255
[P-ospf-1-area-0.0.0.0] network 172.2.1.0 0.0.0.255
[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] quit
[P-ospf-1] quit

    # Configure PE2.

    <HUAWEI> system-view
[HUAWEI] sysname PE2
[PE2] interface loopback 1
[PE2-LoopBack1] ip address 3.3.3.9 32
[PE2-LoopBack1] quit
[PE2] vlan batch 40 50 60
[PE2] interface gigabitethernet 0/0/1
[PE2-GigabitEthernet0/0/1] port link-type trunk
[PE2-GigabitEthernet0/0/1] port trunk allow-pass vlan 40
[PE2-GigabitEthernet0/0/1] quit
[PE2] interface gigabitethernet 0/0/2 
[PE2-GigabitEthernet0/0/2] port link-type trunk
[PE2-GigabitEthernet0/0/2] port trunk allow-pass vlan 50
[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 60
[PE2-GigabitEthernet0/0/3] quit
[PE2] interface vlanif 60
[PE2-Vlanif60] ip address 172.2.1.2 24
[PE2-Vlanif60] quit
[PE2] ospf 1
[PE2-ospf-1] area 0
[PE2-ospf-1-area-0.0.0.0] network 172.2.1.0 0.0.0.255
[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] quit
[PE2-ospf-1] quit

    After the configuration is complete, OSPF neighbor relationships are established between PE1 and P, and between PE2 and P. Run the display ospf peer command. The command output shows that the neighbor status is Full. Run the display ip routing-table command. The command output shows that PEs have learned the routes to Loopback1 of each other.

    The information displayed on PE1 is used as an example.

    [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

         1.1.1.9/32   Direct 0    0           D  127.0.0.1       LoopBack1
         2.2.2.9/32   OSPF   10   1           D  172.1.1.2       Vlanif30
         3.3.3.9/32   OSPF   10   2           D  172.1.1.2       Vlanif30
        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
       172.1.1.0/24   Direct 0    0           D  172.1.1.1       Vlanif30
       172.1.1.1/32   Direct 0    0           D  127.0.0.1       Vlanif30
       172.2.1.0/24   OSPF   10   2           D  172.1.1.2       Vlanif30

    [PE1] display ospf peer

          OSPF Process 1 with Router ID 1.1.1.9
                  Neighbors

 Area 0.0.0.0 interface 172.1.1.1(Vlanif30)'s neighbors
 Router ID: 2.2.2.9         Address: 172.1.1.2
   State: Full  Mode:Nbr is  Slave   Priority: 1
   DR: 172.1.1.1  BDR: 172.1.1.2  MTU: 0 
   Dead timer due in 37  sec
   Retrans timer interval: 5 
   Neighbor is up for 00:16:21
   Authentication Sequence: [ 0 ]

  2. Configure basic MPLS capabilities and MPLS LDP on the MPLS backbone network to establish LDP LSPs.

    # Configure PE1.

    [PE1] mpls lsr-id 1.1.1.9
[PE1] mpls
[PE1-mpls] quit
[PE1] mpls ldp
[PE1-mpls-ldp] quit
[PE1] interface vlanif 30
[PE1-Vlanif30] mpls
[PE1-Vlanif30] mpls ldp
[PE1-Vlanif30] quit

    # Configure P.

    [P] mpls lsr-id 2.2.2.9
[P] mpls
[P-mpls] quit
[P] mpls ldp
[P-mpls-ldp] quit
[P] interface vlanif 30
[P-Vlanif30] mpls
[P-Vlanif30] mpls ldp
[P-Vlanif30] quit
[P] interface vlanif 60
[P-Vlanif60] mpls
[P-Vlanif60] mpls ldp
[P-Vlanif60] quit

    # Configure PE2.

    [PE2] mpls lsr-id 3.3.3.9
[PE2] mpls
[PE2-mpls] quit
[PE2] mpls ldp
[PE2-mpls-ldp] quit
[PE2] interface vlanif 60
[PE2-Vlanif60] mpls
[PE2-Vlanif60] mpls ldp
[PE2-Vlanif60] quit

    After the configuration is complete, LDP sessions are established between PE1 and the P and between the P and PE2. Run the display mpls ldp session command. The command output shows that the Status field is Operational. Run the display mpls ldp lsp command. Information about the established LDP LSPs is displayed.

    The information displayed 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
 ------------------------------------------------------------------------------
 2.2.2.9:0          Operational DU   Passive  0000:00:01  6/6
 ------------------------------------------------------------------------------
 TOTAL: 1 session(s) Found.


    [PE1] display mpls ldp lsp

LDP LSP Information
 -------------------------------------------------------------------------------
 Flag after Out IF: (I) - LSP Is Only Iterated by RLFA
 -------------------------------------------------------------------------------
 DestAddress/Mask   In/OutLabel   UpstreamPeer     NextHop     OutInterface   
 -------------------------------------------------------------------------------
 1.1.1.9/32         3/NULL        2.2.2.9          127.0.0.1   InLoop0    
*1.1.1.9/32         Liberal/1024                   DS/2.2.2.9
 2.2.2.9/32         NULL/3        -                172.1.1.2   Vlanif30       
 2.2.2.9/32         1024/3        2.2.2.9          172.1.1.2   Vlanif30       
 3.3.3.9/32         NULL/1025     -                172.1.1.2   Vlanif30       
 3.3.3.9/32         1025/1025     2.2.2.9          172.1.1.2   Vlanif30      
 -------------------------------------------------------------------------------
 TOTAL: 5 Normal LSP(s) Found.
 TOTAL: 1 Liberal LSP(s) Found.
 TOTAL: 0 Frr LSP(s) Found.
 A '*' before an LSP means the LSP is not established 
 A '*' before a Label means the USCB or DSCB is stale 
 A '*' before a UpstreamPeer means the session is stale 
 A '*' before a DS means the session is stale 
 A '*' before a NextHop means the LSP is FRR LSP

  3. Configure VPN instances on PEs and bind the interfaces connected to CEs to the VPN instances.

    # Configure PE1.

    [PE1] ip vpn-instance vpna
[PE1-vpn-instance-vpna] route-distinguisher 100:1
[PE1-vpn-instance-vpna-af-ipv4] vpn-target 111:1 both
[PE1-vpn-instance-vpna-af-ipv4] quit
[PE1-vpn-instance-vpna] quit
[PE1] ip vpn-instance vpnb
[PE1-vpn-instance-vpnb] route-distinguisher 100:2
[PE1-vpn-instance-vpnb-af-ipv4] vpn-target 222:2 both
[PE1-vpn-instance-vpnb-af-ipv4] quit
[PE1-vpn-instance-vpnb] quit
[PE1] interface vlanif 10
[PE1-Vlanif10] ip binding vpn-instance vpna
[PE1-Vlanif10] ip address 10.1.1.2 24
[PE1-Vlanif10] quit
[PE1] interface vlanif 20
[PE1-Vlanif20] ip binding vpn-instance vpnb
[PE1-Vlanif20] ip address 10.2.1.2 24
[PE1-Vlanif20] quit

    # Configure PE2.

    [PE2] ip vpn-instance vpna
[PE2-vpn-instance-vpna] route-distinguisher 200:1
[PE2-vpn-instance-vpna-af-ipv4] vpn-target 111:1 both
[PE2-vpn-instance-vpna-af-ipv4] quit
[PE2-vpn-instance-vpna] quit
[PE2] ip vpn-instance vpnb
[PE2-vpn-instance-vpnb] route-distinguisher 200:2
[PE2-vpn-instance-vpnb-af-ipv4] vpn-target 222:2 both
[PE2-vpn-instance-vpnb-af-ipv4] quit
[PE2-vpn-instance-vpnb] quit
[PE2] interface vlanif 40
[PE2-Vlanif40] ip binding vpn-instance vpna
[PE2-Vlanif40] ip address 10.3.1.2 24
[PE2-Vlanif40] quit
[PE2] interface vlanif 50
[PE2-Vlanif50] ip binding vpn-instance vpnb
[PE2-Vlanif50] ip address 10.4.1.2 24
[PE2-Vlanif50] quit

    # Assign IP addresses to the interfaces on the CE1 according to Figure 1. The configuration procedure is not provided here. The configuration on CE2, CE3, and CE4 are similar to the configuration on CE1 and is not mentioned here.

    <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

    After the configuration is complete, run the display ip vpn-instance verbose command on the PEs to check the configuration of VPN instances. Each PE can ping its connected CE.

    If a PE has multiple interfaces bound to the same VPN instance, specify a source IP addresses by setting -a source-ip-address in the ping -vpn-instance vpn-instance-name -a source-ip-address dest-ip-address command to ping a remote CE. If the source IP address is not specified, the ping fails.

    PE1 and CE1 are used as an example.

    [PE1] display ip vpn-instance verbose
 Total VPN-Instances configured : 2
 Total IPv4 VPN-Instances configured : 2
 Total IPv6 VPN-Instances configured : 0

 VPN-Instance Name and ID : vpna, 1
  Interfaces : Vlanif10
 Address family ipv4
  Create date : 2014-11-03 02:39:34+00:00
  Up time : 0 days, 22 hours, 24 minutes and 53 seconds
  Route Distinguisher : 100:1
  Export VPN Targets :  111:1
  Import VPN Targets :  111:1
  Label Policy : label per instance
  Per-Instance Label : 4098
  Log Interval : 5

 VPN-Instance Name and ID : vpnb, 2
  Interfaces : Vlanif20
 Address family ipv4
  Create date : 2014-11-03 02:39:34+00:00
  Up time : 0 days, 22 hours, 24 minutes and 53 seconds
  Route Distinguisher : 100:2
  Export VPN Targets :  222:2
  Import VPN Targets :  222:2
  Label Policy : label per instance
  Per-Instance Label : 4098
  Log Interval : 5
  

    [PE1] ping -vpn-instance vpna 10.1.1.1
  PING 10.1.1.1: 56  data bytes, press CTRL_C to break
    Reply from 10.1.1.1: bytes=56 Sequence=1 ttl=255 time=5 ms
    Reply from 10.1.1.1: bytes=56 Sequence=2 ttl=255 time=3 ms
    Reply from 10.1.1.1: bytes=56 Sequence=3 ttl=255 time=3 ms
    Reply from 10.1.1.1: bytes=56 Sequence=4 ttl=255 time=3 ms
    Reply from 10.1.1.1: bytes=56 Sequence=5 ttl=255 time=16 ms

  --- 10.1.1.1 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 3/6/16 ms

  4. Establish EBGP peer relationships between PEs and CEs and import VPN routes into BGP.

    # Configure CE1. The configuration on CE2, CE3, and CE4 is similar to the configuration on CE1 and is not mentioned here.

    [CE1] bgp 65410
[CE1-bgp] peer 10.1.1.2 as-number 100
[CE1-bgp] import-route direct
[CE1-bgp] quit

    # Configure PE1. The configuration on PE2 is similar to the configuration on PE1 and is not mentioned here.

    [PE1] bgp 100
[PE1-bgp] ipv4-family vpn-instance vpna
[PE1-bgp-vpna] peer 10.1.1.1 as-number 65410
[PE1-bgp-vpna] import-route direct
[PE1-bgp-vpna] quit
[PE1-bgp] ipv4-family vpn-instance vpnb
[PE1-bgp-vpnb] peer 10.2.1.1 as-number 65420
[PE1-bgp-vpnb] import-route direct
[PE1-bgp-vpnb] quit
[PE1-bgp] quit

    After the configuration is complete, run the display bgp vpnv4 vpn-instance peer command on the PEs. The command output shows that BGP peer relationships have been established between the PEs and CEs.

    The peer relationship between PE1 and CE1 is used as an example.

    [PE1] display bgp vpnv4 vpn-instance vpna peer

 BGP local router ID : 1.1.1.9
 Local AS number : 100
 VPN-Instance vpna, Router ID 1.1.1.9:
 Total number of peers : 1                 Peers in established state : 1

  Peer            V    AS  MsgRcvd  MsgSent  OutQ  Up/Down       State      PrefRcv

  10.1.1.1        4 65410       11        9     0 00:07:25      Established       1

  5. Establish MP-IBGP peer relationships between PEs.

    # 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] ipv4-family vpnv4
[PE1-bgp-af-vpnv4] peer 3.3.3.9 enable
[PE1-bgp-af-vpnv4] quit
[PE1-bgp] quit

    # 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] ipv4-family vpnv4
[PE2-bgp-af-vpnv4] peer 1.1.1.9 enable
[PE2-bgp-af-vpnv4] quit
[PE2-bgp] quit

    After the configuration is complete, run the display bgp peer or display bgp vpnv4 all peer command on the PEs. The command output shows that BGP peer relationships have been established between the PEs.

    [PE1] display bgp peer

 BGP local router ID : 1.1.1.9
 Local AS number : 100
 Total number of peers : 1                 Peers in established state : 1

  Peer            V    AS  MsgRcvd  MsgSent  OutQ  Up/Down       State              PrefRcv

  3.3.3.9         4   100       12        6     0 00:02:21        Established       0
    [PE1] display bgp vpnv4 all peer

BGP local router ID : 1.1.1.9
 Local AS number : 100
 Total number of peers : 3                 Peers in established state : 3

  Peer            V    AS  MsgRcvd  MsgSent    OutQ  Up/Down    State        PrefRcv

  3.3.3.9         4   100   12      18         0     00:09:38   Established   0
  Peer of IPv4-family for vpn instance :

 VPN-Instance vpna, Router ID 1.1.1.9: 
  10.1.1.1        4   65410  25     25         0     00:17:57   Established   1
 VPN-Instance vpnb, Router ID 1.1.1.9: 
  10.2.1.1        4   65420  21     22         0     00:17:10   Established   1

  6. Verify the configurations.

    Run the display ip routing-table vpn-instance command on the PEs to view the routes to the remote CEs.

    The information displayed on PE1 is used as an example.

    [PE1] display ip routing-table vpn-instance vpna
Route Flags: R - relay, D - download to fib, T - to vpn-instance
------------------------------------------------------------------------------
Routing Tables: vpna
         Destinations : 3        Routes : 3

Destination/Mask    Proto  Pre  Cost     Flags NextHop         Interface

     10.1.1.0/24    Direct 0    0        D     10.1.1.2        Vlanif10
     10.1.1.2/32    Direct 0    0        D     127.0.0.1       Vlanif10
    10.3.1.0/24     IBGP   255  0        RD    3.3.3.9         Vlanif30

    [PE1] display ip routing-table vpn-instance vpnb
Route Flags: R - relay, D - download to fib, T - to vpn-instance
------------------------------------------------------------------------------
Routing Tables: vpnb
         Destinations : 3        Routes : 3

Destination/Mask    Proto  Pre  Cost     Flags NextHop         Interface

     10.2.1.0/24    Direct 0    0        D     10.2.1.2        Vlanif20
     10.2.1.2/32    Direct 0    0        D     127.0.0.1       Vlanif20
    10.4.1.0/24    IBGP    255  0        RD    3.3.3.9         Vlanif30

    CEs in the same VPN can ping each other, whereas CEs on different VPNs cannot.

    For example, CE1 can ping CE3 at 10.3.1.1 but cannot ping CE4 at 10.4.1.1.

    [CE1] ping 10.3.1.1
  PING 10.3.1.1: 56  data bytes, press CTRL_C to break
    Reply from 10.3.1.1: bytes=56 Sequence=1 ttl=253 time=72 ms
    Reply from 10.3.1.1: bytes=56 Sequence=2 ttl=253 time=34 ms
    Reply from 10.3.1.1: bytes=56 Sequence=3 ttl=253 time=50 ms
    Reply from 10.3.1.1: bytes=56 Sequence=4 ttl=253 time=50 ms
    Reply from 10.3.1.1: bytes=56 Sequence=5 ttl=253 time=34 ms
  --- 10.3.1.1 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 34/48/72 ms

Configuration Files

  • PE1 configuration file

    #
sysname PE1
#
vlan batch 10 20 30
#
ip vpn-instance vpna
 ipv4-family
  route-distinguisher 100:1
  vpn-target 111:1 export-extcommunity
  vpn-target 111:1 import-extcommunity
#
ip vpn-instance vpnb
 ipv4-family
  route-distinguisher 100:2
  vpn-target 222:2 export-extcommunity
  vpn-target 222:2 import-extcommunity
#
mpls lsr-id 1.1.1.9
mpls
#
mpls ldp
#
interface Vlanif10
 ip binding vpn-instance vpna
 ip address 10.1.1.2 255.255.255.0
# 
interface Vlanif20
 ip binding vpn-instance vpnb
 ip address 10.2.1.2 255.255.255.0
#
interface Vlanif30
 ip address 172.1.1.1 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10
# 
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 20
#
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 30
#
interface LoopBack1
 ip address 1.1.1.9 255.255.255.255
# 
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
 #
 ipv4-family vpnv4
  policy vpn-target
  peer 3.3.3.9 enable
 #
 ipv4-family vpn-instance vpna
  import-route direct
  peer 10.1.1.1 as-number 65410
 #
 ipv4-family vpn-instance vpnb
  import-route direct
  peer 10.2.1.1 as-number 65420
#
ospf 1
 area 0.0.0.0
  network 1.1.1.9 0.0.0.0
  network 172.1.1.0 0.0.0.255
#
return

  • P configuration file

    #
sysname P
#
vlan batch 30 60
#
mpls lsr-id 2.2.2.9
mpls
#
mpls ldp
# 
interface Vlanif30
 ip address 172.1.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface Vlanif60
 ip address 172.2.1.1 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 30
# 
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 60
# 
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 172.1.1.0 0.0.0.255
  network 172.2.1.0 0.0.0.255
#
return

  • PE2 configuration file

    #
sysname PE2
#
vlan batch 40 50 60
#
ip vpn-instance vpna
 ipv4-family
  route-distinguisher 200:1
  vpn-target 111:1 export-extcommunity
  vpn-target 111:1 import-extcommunity
#
ip vpn-instance vpnb
 ipv4-family
  route-distinguisher 200:2
  vpn-target 222:2 export-extcommunity
  vpn-target 222:2 import-extcommunity
#
mpls lsr-id 3.3.3.9
mpls
#
mpls ldp
#
interface Vlanif40
 ip binding vpn-instance vpna
 ip address 10.3.1.2 255.255.255.0
#
interface Vlanif50
 ip binding vpn-instance vpnb
 ip address 10.4.1.2 255.255.255.0
#
interface Vlanif60
 ip address 172.2.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 40
# 
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 50
# 
interface GigabitEthernet0/0/3
 port link-type trunk
 port trunk allow-pass vlan 60
# 
interface LoopBack1
 ip address 3.3.3.9 255.255.255.255
#
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
 #
 ipv4-family vpnv4
  policy vpn-target
  peer 1.1.1.9 enable 
 #
 ipv4-family vpn-instance vpna
  import-route direct
  peer 10.3.1.1 as-number 65430
 #
 ipv4-family vpn-instance vpnb
  import-route direct
  peer 10.4.1.1 as-number 65440
#
ospf 1
 area 0.0.0.0
  network 3.3.3.9 0.0.0.0
  network 172.2.1.0 0.0.0.255
# 
return

  • 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
#
bgp 65410
 peer 10.1.1.2 as-number 100
 #
 ipv4-family unicast
  undo synchronization
  import-route direct
  peer 10.1.1.2 enable
#
return

  • CE2 configuration file

    #
sysname CE2
#
vlan batch 20
#
interface Vlanif20
 ip address 10.2.1.1 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 20
#
bgp 65420
 peer 10.2.1.2 as-number 100
 #
 ipv4-family unicast
  undo synchronization
  import-route direct
  peer 10.2.1.2 enable
#
return

  • CE3 configuration file

    #
sysname CE3
#
vlan batch 40
#
interface Vlanif40
 ip address 10.3.1.1 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 40
#
bgp 65430
 peer 10.3.1.2 as-number 100
 #
 ipv4-family unicast
  undo synchronization
  import-route direct
  peer 10.3.1.2 enable
#
return

  • CE4 configuration file

    #
sysname CE4
#
vlan batch 50
#
interface Vlanif50
 ip address 10.4.1.1 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 50
#
bgp 65440
 peer 10.4.1.2 as-number 100
 #
 ipv4-family unicast
  undo synchronization
  import-route direct
  peer 10.4.1.2 enable
#
return
Parent Topic: Configuration Examples for BGP/MPLS IP VPN
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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