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Example for Configuring a Mixed Multi-hop PW

Networking Requirements

As shown in Figure 1, the carrier MPLS network provides L2VPN services for users. The SPE has powerful functions, and UPE1 and UPE2 (UPE2 supports only static PWs) function as access devices and cannot directly establish a remote LDP session. UPE1 and UPE2 connect to many users with variable quantities. A VPN solution is required to provide secure VPN services and facilitate configuration and maintenance for new access users.

By default, LNP is enabled globally on the device. If a VLANIF interface is used as an AC-side interface for L2VPN, the configuration conflicts with LNP. In this case, run the lnp disable command in the system view to disable LNP.

The lnp disable command has no impact on services before the device restarts. After the device restarts, the device can only forward packets from the VLANs specified by the port default vlan command at Layer 2. The port default vlan 1 command is configured by default, so only packets of VLAN 1 can be forwarded at Layer 2.

Figure 1 Networking diagram of configuring a mixed multi-hop PW

Configuration Roadmap

Because the SPE has powerful functions, and UPE1 and UPE2 cannot directly establish a remote LDP session, configure a multi-hop PW and PW switching on SPE. UPE2 supports only static PWs, so a mixed multi-hop PW is used.

The configuration roadmap is as follows:

  1. Configure an IGP protocol on the backbone network so that backbone network devices can communicate.

  2. Configure basic MPLS functions and establish LSP tunnels on the backbone network.

  3. Set up a remote LDP session between UPE1 and SPE.

  4. Set up static or dynamic MPLS L2VC connections on UPEs.

  5. Configure PW switching on SPE.

Procedure

  1. Configure VLANs that each interface belongs to and assign an IP address to each VLANIF interface according to Figure 1.

    # Configure CE1. The configuration on UPE1, P1, SPE, P2, UPE2, and CE2 is similar to the CE1, and is not mentioned here.

    <HUAWEI> system-view
[HUAWEI] sysname CE1
[CE1] vlan batch 10
[CE1] interface vlanif 10
[CE1-Vlanif10] ip address 192.168.1.1 255.255.255.0
[CE1-Vlanif10] quit
[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

  2. Configure an IGP protocol on the MPLS backbone network.

    Configure an IGP on the MPLS backbone network. This example uses OSPF.

    When configuring OSPF, advertise 32-bit IP addresses of loopback interfaces on UPE1, SPE, and UPE2.

    # Configure UPE1. The configuration on P1, SPE, P2, and UPE2 is similar to the UPE1, and is not mentioned here.

    [UPE1]  interface loopback 0
[UPE1-LoopBack0] ip address 1.1.1.9 255.255.255.255
[UPE1-LoopBack0] quit
[UPE1] ospf 1
[UPE1-ospf-1] area 0
[UPE1-ospf-1-area-0.0.0.0] network 50.1.1.0 0.0.0.255
[UPE1-ospf-1-area-0.0.0.0] network 1.1.1.9 0.0.0.0
[UPE1-ospf-1-area-0.0.0.0] quit
[UPE1-ospf-1] quit

  3. Enable MPLS, set up tunnels, and set up a remote LDP session between UPE1 and SPE.

    Configure basic MPLS functions and tunnels on the MPLS backbone network. In this example, the LSP tunnel is used.

    You need to set up a remote LDP session between UPE1 and SPE.

    # Configure UPE1.

    [UPE1] mpls lsr-id 1.1.1.9
[UPE1] mpls
[UPE1-mpls] quit
[UPE1] mpls ldp
[UPE1-mpls-ldp] quit
[UPE1] interface vlanif 20 
[UPE1-Vlanif20] mpls
[UPE1-Vlanif20] mpls ldp
[UPE1-Vlanif20] quit
[UPE1] mpls ldp remote-peer 3.3.3.9
[UPE1-mpls-ldp-remote-3.3.3.9] remote-ip 3.3.3.9
[UPE1-mpls-ldp-remote-3.3.3.9] quit

    # Configure P1

    [P1] mpls lsr-id 2.2.2.9
[P1] mpls
[P1-mpls] quit
[P1] mpls ldp
[P1-mpls-ldp] quit
[P1] interface vlanif 20 
[P1-Vlanif20] mpls
[P1-Vlanif20] mpls ldp
[P1-Vlanif20] quit
[P1] interface vlanif 30 
[P1-Vlanif30] mpls
[P1-Vlanif30] mpls ldp
[P1-Vlanif30] quit

    # Configure SPE

    [SPE] mpls lsr-id 3.3.3.9
[SPE] mpls
[SPE-mpls] quit
[SPE] mpls ldp
[SPE-mpls-ldp] quit
[SPE] interface vlanif 30
[SPE-Vlanif30] mpls
[SPE-Vlanif30] mpls ldp
[SPE-Vlanif30] quit
[SPE] interface vlanif 40
[SPE-Vlanif40] mpls
[SPE-Vlanif40] mpls ldp
[SPE-Vlanif40] quit
[SPE] mpls ldp remote-peer 1.1.1.9
[SPE-mpls-ldp-remote-1.1.1.9] remote-ip 1.1.1.9
[SPE-mpls-ldp-remote-1.1.1.9] quit
[SPE] mpls ldp remote-peer 5.5.5.9
[SPE-mpls-ldp-remote-5.5.5.9] remote-ip 5.5.5.9
[SPE-mpls-ldp-remote-5.5.5.9] quit

    # Configure P2

    [P2] mpls lsr-id 4.4.4.9
[P2] mpls 
[P2-mpls] quit
[P2] mpls ldp
[P2-mpls-ldp] quit
[P2] interface vlanif 40
[P2-Vlanif40] mpls
[P2-Vlanif40] mpls ldp
[P2-Vlanif40] quit
[P2] interface vlanif 50
[P2-Vlanif50] mpls
[P2-Vlanif50] mpls ldp
[P2-Vlanif50] quit

    # Configure UPE2

    [UPE2] mpls lsr-id 5.5.5.9
[UPE2] mpls 
[UPE2-mpls] quit
[UPE2] mpls ldp
[UPE2-mpls-ldp] quit 
[UPE2] interface vlanif 50 
[UPE2-Vlanif50] mpls
[UPE2-Vlanif50] mpls ldp
[UPE2-Vlanif50] quit
[UPE2] mpls ldp remote-peer 3.3.3.9
[UPE2-mpls-ldp-remote-3.3.3.9] remote-ip 3.3.3.9
[UPE2-mpls-ldp-remote-3.3.3.9] quit

  4. Create VCs.

    Enable MPLS L2VPN on UPE1, UPE2, and SPE.

    Configure a dynamic VC on UPE1 and a static VC on UPE2, and configure mixed PW switching on SPE.

    # Configure UPE1.In this example, a VLANIF interface is used as the AC-side interface, so you need to run the lnp disable command in the system view before performing the following steps. If you cannot disable LNP on the live network, do not use a VLANIF interface as the AC-side interface.

    [UPE1] mpls l2vpn
[UPE1-l2vpn] quit
[UPE1] interface vlanif 10
[UPE1-Vlanif10] mpls l2vc 3.3.3.9 100 
[UPE1-Vlanif10] quit

    When configuring mixed PW switching, ip-address vc-id before between specifies the dynamic PW, and ip-address vc-id after between specifies the static PW. They cannot be interchanged.

    # Configure SPE.

    [SPE] mpls l2vpn
[SPE-l2vpn] quit
[SPE] mpls switch-l2vc 1.1.1.9 100 between 5.5.5.9 200 trans 200 recv 100 encapsulation vlan

    # Configure UPE2.In this example, a VLANIF interface is used as the AC-side interface, so you need to run the lnp disable command in the system view before performing the following steps. If you cannot disable LNP on the live network, do not use a VLANIF interface as the AC-side interface.

    [UPE2] mpls l2vpn
[UPE2-l2vpn] quit
[UPE2] pw-template pwt
[UPE2-pw-template-pwt] peer-address 3.3.3.9
[UPE2-pw-template-pwt] quit
[UPE2] interface vlanif 60
[UPE2-Vlanif60] mpls static-l2vc pw-template pwt 200 transmit-vpn-label 100 receive-vpn-label 200
[UPE2-Vlanif60] quit

  5. Verify the configuration.

    # After the network becomes stable, view information about L2VPN connections on PEs. You can see that an L2VC is set up and the VC status is Up.

    The display on UPE1 and SPE is used as an example.

    [UPE1] display mpls l2vc interface vlanif 10
 *client interface       : Vlanif10 is up
  Administrator PW       : no
  session state          : up
  AC status              : up
  Ignore AC state        : disable
  VC state               : up
  Label state            : 0
  Token state            : 0
  VC ID                  : 100
  VC type                : VLAN
  destination            : 3.3.3.9
  local group ID         : 0            remote group ID      : 0
  local VC label         : 8195        remote VC label      : 8195
  local AC OAM State     : up
  local PSN OAM State    : up
  local forwarding state : forwarding
  local status code      : 0x0 
  remote AC OAM state    : up
  remote PSN OAM state   : up
  remote forwarding state: forwarding
  remote status code     : 0x0 
  ignore standby state   : no
  BFD for PW             : unavailable
  VCCV State             : up
  manual fault           : not set
  active state           : active
  forwarding entry       : exist
  link state             : up
  local VC MTU           : 1500         remote VC MTU        : 1500
  local VCCV             : alert lsp-ping bfd
  remote VCCV            : alert lsp-ping bfd
  local control word     : disable      remote control word  : disable
  tunnel policy name     : --
  PW template name       : --
  primary or secondary   : primary
  load balance type      : flow
  Access-port            : false
  Switchover Flag        : false
  VC tunnel/token info   : 1 tunnels/tokens
    NO.0  TNL type       : lsp   , TNL ID : 0x27
    Backup TNL type      : lsp   , TNL ID : 0x0
  create time            : 0 days, 13 hours, 3 minutes, 37 seconds
  up time                : 0 days, 12 hours, 54 minutes, 46 seconds
  last change time       : 0 days, 12 hours, 54 minutes, 46 seconds
  VC last up time        : 2010/11/24 12:31:31
  VC total up time       : 0 days, 2 hours, 12 minutes, 51 seconds
  CKey                   : 16                                                     
  NKey                   : 15   
  PW redundancy mode     : frr                                                   
  AdminPw interface      : --                                                   
  AdminPw link state     : -- 
  Diffserv Mode          : uniform
  Service Class          : --
  Color                  : --
  DomainId               : --
  Domain Name            : --

    [SPE] display mpls switch-l2vc
Total Switch VC : 1, 1 up, 0 down

*Switch-l2vc type             : LDP<---->SVC
 Peer IP Address              : 1.1.1.9, 5.5.5.9
 VC ID                        : 100, 200
 VC Type                      : VLAN
 VC State                     : up
 Session State                : up, None
 Local(In)/Remote(Out) Label  : 8195/8195, 100/200
 InLabel Status               : 0 , 0
 Local/Remote MTU             : 1500/1500, 1500
 Local/Remote Control Word    : Disable/Disable, Disable
 Local/Remote VCCV Capability : alert ttl lsp-ping bfd /alert ttl lsp-ping bfd , alert ttl lsp-ping bfd  
 Switch-l2vc tunnel info      :
                                1 tunnels for peer 1.1.1.9
                                NO.0  TNL Type : lsp   , TNL ID : 0x48002000
                                1 tunnels for peer 5.5.5.9
                                NO.0  TNL Type : lsp   , TNL ID : 0x48002004
 CKey                         : 44, 1                                           
 NKey                         : 43, 3  
 Tunnel policy                : --, --  
 Control-Word transparent     : NO
 Create time                  : 0 days, 0 hours, 10 minutes, 59 seconds
 UP time                      : 0 days, 0 hours, 55 minutes, 45 seconds
 Last change time             : 0 days, 0 hours, 55 minutes, 45 seconds
 VC last up time              : 2010/11/24 12:31:31
 VC total up time             : 0 days, 2 hours, 12 minutes, 51 seconds

    CE1 and CE2 can ping each other successfully.

    The display on CE1 is used as an example.

    [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=270 ms
    Reply from 192.168.1.2: bytes=56 Sequence=2 ttl=255 time=220 ms
    Reply from 192.168.1.2: bytes=56 Sequence=3 ttl=255 time=190 ms
    Reply from 192.168.1.2: bytes=56 Sequence=4 ttl=255 time=190 ms
    Reply from 192.168.1.2: bytes=56 Sequence=5 ttl=255 time=160 ms

  --- 192.168.1.2 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 160/206/270 ms

Configuration Files

  • CE1 configuration file

    #
sysname CE1
#
vlan batch 10
#
interface Vlanif10
 ip address 192.168.1.1 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 10
#
return

  • UPE1 configuration file

    The lnp disable command has no impact on services before the device restarts. After the device restarts, the device can only forward packets from the VLANs specified by the port default vlan command at Layer 2. The port default vlan 1 command is configured by default, so only packets of VLAN 1 can be forwarded at Layer 2.

    #
sysname UPE1
#
vlan batch 10 20
#
lnp disable #mpls lsr-id 1.1.1.9
mpls
#
mpls l2vpn
#
mpls ldp
#
mpls ldp remote-peer 3.3.3.9
 remote-ip 3.3.3.9
#
interface Vlanif10
 mpls l2vc 3.3.3.9 100
#
interface Vlanif20
 ip address 50.1.1.1 255.255.255.0
 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 LoopBack0
 ip address 1.1.1.9 255.255.255.255
#
ospf 1
 area 0.0.0.0
  network 1.1.1.9 0.0.0.0
  network 50.1.1.0 0.0.0.255
#
return

  • P1 configuration file

    #
sysname P1
#
vlan batch 20 30
#
mpls lsr-id 2.2.2.9
mpls
#
mpls ldp
#
interface Vlanif20
 ip address 50.1.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface Vlanif30
 ip address 20.1.1.1 255.255.255.0
 mpls
 mpls ldp
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 20
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 30
#
interface LoopBack0
 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 20.1.1.0 0.0.0.255
  network 50.1.1.0 0.0.0.255
#
return

  • SPE configuration file

    #
sysname SPE
#
vlan batch 30 40
#
mpls lsr-id 3.3.3.9
mpls
#
mpls l2vpn
#
mpls switch-l2vc 1.1.1.9 100 between 5.5.5.9 200 trans 200 recv 100 encapsulation vlan
#
mpls ldp
#
mpls ldp remote-peer 1.1.1.9
 remote-ip 1.1.1.9
#
mpls ldp remote-peer 5.5.5.9
 remote-ip 5.5.5.9
#
interface Vlanif30
 ip address 20.1.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface Vlanif40
 ip address 30.1.1.1 255.255.255.0
 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 40
#
interface LoopBack0
 ip address 3.3.3.9 255.255.255.255
#
ospf 1
 area 0.0.0.0
  network 3.3.3.9 0.0.0.0
  network 20.1.1.0 0.0.0.255
  network 30.1.1.0 0.0.0.255
#
return

  • P2 configuration file

    #
sysname P2
#
vlan batch 40 50
#
mpls lsr-id 4.4.4.9
mpls
#
mpls ldp
#
interface Vlanif40
 ip address 30.1.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface Vlanif50
 ip address 40.1.1.1 255.255.255.0
 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 LoopBack0
 ip address 4.4.4.9 255.255.255.255
#
ospf 1
 area 0.0.0.0
  network 4.4.4.9 0.0.0.0
  network 30.1.1.0 0.0.0.255
  network 40.1.1.0 0.0.0.255
#
return

  • UPE2 configuration file

    The lnp disable command has no impact on services before the device restarts. After the device restarts, the device can only forward packets from the VLANs specified by the port default vlan command at Layer 2. The port default vlan 1 command is configured by default, so only packets of VLAN 1 can be forwarded at Layer 2.

    #
sysname UPE2
#
vlan batch 50 60
#
lnp disable #mpls lsr-id 5.5.5.9
mpls
#
mpls l2vpn
#
pw-template pwt
 peer-address 3.3.3.9
#
mpls ldp
#
mpls ldp remote-peer 3.3.3.9
 remote-ip 3.3.3.9
#
interface Vlanif50
 ip address 40.1.1.2 255.255.255.0
 mpls
 mpls ldp
#
interface Vlanif60
 mpls static-l2vc pw-template pwt 200 transmit-vpn-label 100 receive-vpn-label 200
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 50
#
interface GigabitEthernet0/0/2
 port link-type trunk
 port trunk allow-pass vlan 60
#
interface LoopBack0
 ip address 5.5.5.9 255.255.255.255
#
ospf 1
 area 0.0.0.0
  network 5.5.5.9 0.0.0.0
  network 40.1.1.0 0.0.0.255
#
return

  • CE2 configuration file

    #
sysname CE2
#
vlan batch 60
#
interface Vlanif60
 ip address 192.168.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 60
#
return
Parent Topic: Configuration Examples for PWE3
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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