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Example for Configuring Inter-AS Martini VLL (Option A)

Networking Requirements

The MPLS network of an ISP provides the L2VPN service to many users. PE1 belongs to AS 100 and PE2 belongs to AS 200, as shown in Figure 1. The users connect to the MPLS network through PE1 and PE2, and users on the PEs change frequently. A proper VPN solution is required to provide secure VPN services for users and to simplify the configuration when new users connect to the network.

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 Inter-AS Martini VLL (Option A)

Configuration Roadmap

The PEs connect to different ASs (AS100 and AS200) of the ISP, so an inter-AS VPN solution is required. To simplify the configuration when new users connect to the network, configure a Martini VLL using inter-AS Option A.

The configuration roadmap is as follows:

  1. Run an IGP protocol on the backbone network so that the devices in the same AS can communicate with each other.

  2. Configure the basic MPLS capabilities on the backbone network and set up dynamic LSPs between PEs and ASBR_PEs in the same AS. If PEs and ASBR_PEs are not directly connected, set up a remote LDP session.

  3. Establish MPLS L2VC connections between the PEs and ASBR_PEs in the same AS.

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 CE2, PE1, PE2, ASBR_PE1 and ASBR_PE2 is similar to the configuration on 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.

    PEs and ASBR_PEs on the backbone network can communicate with each other by using IGP.

    In this example, IS-IS is used as IGP.

    # Configure PE1. The configuration on PE2, ASBR_PE1 and ASBR_PE2 is similar to the configuration on PE1 and is not mentioned here.

    [PE1] isis 1
[PE1-isis-1] is-level level-1-2
[PE1-isis-1] network-entity 10.0000.0000.0001.00
[PE1-isis-1] quit
[PE1] interface vlanif 20
[PE1-Vlanif20] isis enable 1
[PE1-Vlanif20] quit
[PE1] interface loopback 0
[PE1-LoopBack0] ip address 1.1.1.9 32
[PE1-LoopBack0] isis enable 1
[PE1-LoopBack0] quit

    After the configuration is complete, the ASBR and PE in the same AS can establish an IS-IS adjacency. Run the display isis peer command, and you can see that the IS-IS adjacency is Up, and the PEs can learn each other's loopback address.

    The command output of PE1 is used as an example.

    [PE1] display isis peer

                          Peer information for ISIS(1)                           
                                                                                 
  System Id     Interface          Circuit Id       State HoldTime Type     PRI  
-------------------------------------------------------------------------------  
0000.0000.0002  Vlanif20           0000.0000.0001.01 Up   21s      L1(L1L2)  64
0000.0000.0002  Vlanif20           0000.0000.0001.01 Up   21s      L2(L1L2)  64

Total Peer(s): 2

    The ASBR and PE in the same AS can ping each other.

    The command output of PE1 is used as an example.

    [PE1] ping 2.2.2.9
  PING 2.2.2.9: 56  data bytes, press CTRL_C to break
    Reply from 2.2.2.9: bytes=56 Sequence=1 ttl=255 time=180 ms
    Reply from 2.2.2.9: bytes=56 Sequence=2 ttl=255 time=90 ms
    Reply from 2.2.2.9: bytes=56 Sequence=3 ttl=255 time=60 ms
    Reply from 2.2.2.9: bytes=56 Sequence=4 ttl=255 time=60 ms
    Reply from 2.2.2.9: bytes=56 Sequence=5 ttl=255 time=100 ms

  --- 2.2.2.9 ping statistics ---
    5 packet(s) transmitted
    5 packet(s) received
    0.00% packet loss
    round-trip min/avg/max = 60/98/180 ms

  3. Enable MPLS and configure dynamic LSPs.

    Configure the basic MPLS capabilities on the MPLS backbone network. Establish a dynamic LDP LSP between the PE and ASBR_PE in the same AS.

    [PE1] mpls lsr-id 1.1.1.9
[PE1] mpls
[PE1-mpls] quit
[PE1] mpls ldp
[PE1-mpls-ldp] quit
[PE1] interface vlanif 20
[PE1-Vlanif20] mpls
[PE1-Vlanif20] mpls ldp
[PE1-Vlanif20] quit

    # Configure PE1. The configuration on PE2, ASBR_PE1 and ASBR_PE2 is similar to the configuration on PE1 and is not mentioned here.

    After this step, an LSP is established between the PE and ASBR_PE in the same AS.

    The command output of ASBR_PE1 is used as an example.

    [ASBR_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
 ------------------------------------------------------------------------------
 1.1.1.9:0          Operational DU   Active   0000:00:19  79/79
 ------------------------------------------------------------------------------
 TOTAL: 1 session(s) Found.

  4. Configure the MPLS L2VC connection.

    Configure the L2VC connection on the PE and ASBR_PE and connect the PE to the CE.

    # Configure PE1.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.

    [PE1] mpls l2vpn
[PE1-l2vpn] quit
[PE1] interface vlanif 10
[PE1-Vlanif10] mpls l2vc 2.2.2.9 100
[PE1-Vlanif10] quit

    # Configure ASBR_PE1.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.

    [ASBR_PE1] mpls l2vpn
[ASBR_PE1-l2vpn] quit
[ASBR_PE1] interface vlanif 30
[ASBR_PE1-Vlanif30] mpls l2vc 1.1.1.9 100
[ASBR_PE1-Vlanif30] quit

    # Configure ASBR_PE2.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.

    [ASBR_PE2] mpls l2vpn
[ASBR_PE2-l2vpn] quit
[ASBR_PE2] interface vlanif 30
[ASBR_PE2-Vlanif30] mpls l2vc 4.4.4.9 100
[ASBR_PE2-Vlanif30] quit

    # Configure PE2.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.

    [PE2] mpls l2vpn
[PE2-l2vpn] quit
[PE2] interface vlanif 50
[PE2-Vlanif50] mpls l2vc 3.3.3.9 100
[PE2-Vlanif50] quit

  5. Verify the configuration.

    Check information about the L2VPN connection on PE1. You can see that an L2VC has been set up and the VC status is up.

    The command outputs of PE1 and ASBR_PE2 are used as an example.

    [PE1] 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            : 2.2.2.9
  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 ttl lsp-ping bfd
  remote VCCV            : alert ttl 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 : 0x10031
    Backup TNL type      : lsp   , TNL ID : 0x0
  create time            : 1 days, 22 hours, 15 minutes, 9 seconds
  up time                : 0 days, 22 hours, 54 minutes, 57 seconds
  last change time       : 0 days, 22 hours, 54 minutes, 57 seconds
  VC last up time        : 2010/10/09 19:26:37
  VC total up time       : 0 days, 22 hours, 54 minutes, 57 seconds
  CKey                   : 16
  NKey                   : 15
  PW redundancy mode     : frr
  AdminPw interface      : --
  AdminPw link state     : --
  Diffserv Mode          : uniform                                              
  Service Class          : be                                                   
  Color                  : --                                                   
  DomainId               : --                                                   
  Domain Name            : --                                                   

    [ASBR_PE2] display mpls l2vc interface vlanif 30
 *client interface       : Vlanif30 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            : 4.4.4.9
  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 ttl lsp-ping bfd
  remote VCCV            : alert ttl 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 : 0x10031
    Backup TNL type      : lsp   , TNL ID : 0x0
  create time            : 1 days, 22 hours, 15 minutes, 9 seconds
  up time                : 0 days, 22 hours, 54 minutes, 57 seconds
  last change time       : 0 days, 22 hours, 54 minutes, 57 seconds
  VC last up time        : 2010/10/09 19:26:37
  VC total up time       : 0 days, 22 hours, 54 minutes, 57 seconds
  CKey                   : 17
  NKey                   : 18
  PW redundancy mode     : frr
  AdminPw interface      : --
  AdminPw link state     : --
  Diffserv Mode          : uniform                                              
  Service Class          : be                                                   
  Color                  : --                                                   
  DomainId               : --                                                   
  Domain Name            : --

    CE1 and CE2 can ping each other.

    The command output of 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=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

  • 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

  • PE1 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 PE1
#
vlan batch 10 20
#
lnp disable #mpls lsr-id 1.1.1.9
mpls
#
mpls l2vpn
#
mpls ldp
#
isis 1
 network-entity 10.0000.0000.0001.00
#
interface Vlanif10
 mpls l2vc 2.2.2.9 100
#
interface Vlanif20
 ip address 20.1.1.1 255.255.255.0
 isis enable 1
 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
 isis enable 1
#
return

  • ASBR_PE1 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 ASBR_PE1
#
vlan batch 20 30
#
lnp disable #mpls lsr-id 2.2.2.9
mpls
#
mpls l2vpn
#
mpls ldp
#
isis 1
 network-entity 10.0000.0000.0002.00
#
interface Vlanif20
 ip address 20.1.1.2 255.255.255.0
 isis enable 1
 mpls
 mpls ldp
#
interface Vlanif30
 mpls l2vc 1.1.1.9 100
#
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
 isis enable 1
#
return

  • ASBR_PE2 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 ASBR_PE2
#
vlan batch 30 40
#
lnp disable #mpls lsr-id 3.3.3.9
mpls
#
mpls l2vpn
#
mpls ldp
#
isis 1
 network-entity 10.0000.0000.0003.00
#
interface Vlanif30
 mpls l2vc 4.4.4.9 100
#
interface Vlanif40
 ip address 30.1.1.1 255.255.255.0
 isis enable 1
 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
 isis enable 1
#
return

  • PE2 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 PE2
#
vlan batch 40 50
#
lnp disable #mpls lsr-id 4.4.4.9
mpls
#
mpls l2vpn
#
mpls ldp
#
isis 1
 network-entity 10.0000.0000.0004.00
#
interface Vlanif40
 ip address 30.1.1.2 255.255.255.0
 isis enable 1
 mpls
 mpls ldp
#
interface Vlanif50
 mpls l2vc 3.3.3.9 100
#
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
 isis enable 1
# 
return

  • CE2 configuration file

    #
sysname CE2
#
vlan batch 50
#
interface Vlanif50
 ip address 192.168.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type trunk
 port trunk allow-pass vlan 50
#
return
Parent Topic: Configuration Examples for VLL
Copyright © Huawei Technologies Co., Ltd.
Copyright © Huawei Technologies Co., Ltd.
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