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CLI-based Configuration Guide - VPN

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010

This document describes VPN features on the device and provides configuration procedures and configuration examples.
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Example for Configuring the MPLS VPN Protected by the A2A VPN

Example for Configuring the MPLS VPN Protected by the A2A VPN

Networking Requirements

A large enterprise has many widely distributed branches with a large number of multicast services. BGP/MPLS IP VPN is deployed on the enterprise to implement secure communication between the headquarters and branches. As shown in Figure 6-10, GM_1 is the enterprise branch gateway and GM_2 is the enterprise headquarters gateway. (The enterprise has only one branch in this example.)

The enterprise requires that traffic between the branch and headquarters be encrypted and the existing MPLS VPN network architecture be made full use of. In this instance, an A2A VPN can be deployed between the branch and headquarters to meet these requirements.

Figure 6-10  Networking for configuring the MPLS VPN protected by the A2A VPN

NOTE:

When the device functions as a PE, it does not support multicast rekey.

When the KS connects to a GM, you need to confirm the signature hash algorithm supported by the GM. For example, the GM running a software version earlier than V200R010C00 supports only the SHA1 algorithm.

When the DH algorithm is group2, run the packet-type ipsec-ike rate-limit command in the KS attack defense policy view to set the rate limit of IKE packets sent to the CPU to be less than or equal to 75. Otherwise, the CPU usage of the KS becomes high. When the DH algorithm is group14, run the packet-type ipsec-ike rate-limit command in the KS attack defense policy view to set the rate limit of IKE packets sent to the CPU to be less than or equal to 20. Otherwise, the CPU usage of the KS becomes high.

Configuration Roadmap

  1. Configure an IP address on each interface of the GMs and KS.

  2. Set the AS number of the KS to 65420 and perform the same configuration on PE_2 to add the KS to vpna, ensuring reachable routes between the KS and GMs.

  3. Configure an ACL on the KS to define the data flows to be protected by the A2A VPN.

  4. Configure IKE on the GMs and KS to define the attributes of IKE negotiation.

  5. Configure security proposals on the KS to define the protection method used for the A2A VPN.

  6. Configure a GDOI policy on each GM and apply the policy to the interfaces. Configure a GDOI group on the KS and define group policies to be pushed to the GMs.

Procedure

  1. Configure the KS.
    1. Configure the interface IP address.

      <Huawei> system-view
      [Huawei] sysname KS
      [KS] interface gigabitethernet 1/0/0
      [KS-GigabitEthernet1/0/0] ip address 10.3.3.1 255.255.255.0
      [KS-GigabitEthernet1/0/0] quit
      

    2. Configure an EBGP peer and import VPN routes.

      [KS] bgp 65420
      [KS-bgp] peer 10.3.3.2 as-number 100
      [KS-bgp] import-route direct
      [KS-bgp] quit
      

    3. Define the data flows to be protected by the A2A VPN.

      [KS] acl 3001
      [KS-acl-adv-3001] rule permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255
      [KS-acl-adv-3001] rule permit ip source 10.1.2.0 0.0.0.255 destination 10.1.1.0 0.0.0.255
      [KS-acl-adv-3001] quit
      

    4. Configure an IKE proposal.

      [KS] ike proposal 5
      [KS-ike-proposal-5] authentication-method pre-share
      [KS-ike-proposal-5] encryption-algorithm aes-128
      [KS-ike-proposal-5] authentication-algorithm sha2-256
      [KS-ike-proposal-5] dh group14
      [KS-ike-proposal-5] quit
      

    5. Configure an IPSec proposal.

      [KS] ipsec proposal tran1
      [KS-ipsec-proposal-tran1] encapsulation-mode tunnel
      [KS-ipsec-proposal-tran1] transform esp
      [KS-ipsec-proposal-tran1] esp authentication-algorithm sha2-256
      [KS-ipsec-proposal-tran1] esp encryption-algorithm aes-128
      [KS-ipsec-proposal-tran1] quit
      

    6. Configure a GDOI group.

      # Configure the pre-shared keys for the GMs in the IKE user table.

      [KS] ike user-table 10
      [KS-ike-user-table-10] user gm1
      [KS-ike-user-table-10-gm1] id-type ip 10.3.1.1
      [KS-ike-user-table-10-gm1] pre-shared-key Huawei@123
      [KS-ike-user-table-10-gm1] quit
      [KS-ike-user-table-10] user gm2
      [KS-ike-user-table-10-gm2] id-type ip 10.3.2.1
      [KS-ike-user-table-10-gm2] pre-shared-key Huawei@123
      [KS-ike-user-table-10-gm2] quit
      [KS-ike-user-table-10] quit
      

      # Configure an RSA key pair.

      [KS] pki rsa local-key-pair create keytest modulus 2048 exportable
       Info: The name of the new key-pair will be: keytest
       Generating key-pairs...
      .+++
      ......+++
      

      # Configure GDOI group policies.

      [KS] gdoi ks group test
      [KS-gdoi-group-test] group identity number 10
      [KS-gdoi-group-test] source address 10.3.3.1
      [KS-gdoi-group-test] user-table 10
      [KS-gdoi-group-test] rekey transport-type unicast
      [KS-gdoi-group-test] rekey encryption-algorithm aes-128
      [KS-gdoi-group-test] rekey sig-hash-algorithm sha2-512
      [KS-gdoi-group-test] rekey authentication public-key rsa keytest
      [KS-gdoi-group-test] ipsec 5
      [KS-gdoi-group-test-ipsec-5] proposal tran1
      [KS-gdoi-group-test-ipsec-5] security acl 3001
      [KS-gdoi-group-test-ipsec-5] quit
      [KS-gdoi-group-test] quit
      

  2. Configure the PE.
    1. Configure OSPF on the MPLS backbone network so that the PE devices can communicate with each other.

      # Configure PE_1.

      <Huawei> system-view
      [Huawei] sysname PE_1
      [PE_1] interface loopback 1
      [PE_1-LoopBack1] ip address 2.2.2.9 32
      [PE_1-LoopBack1] quit
      [PE_1] interface gigabitethernet 1/0/0
      [PE_1-GigabitEthernet1/0/0] ip address 1.1.1.1 24
      [PE_1-GigabitEthernet1/0/0] quit
      [PE_1] ospf 1
      [PE_1-ospf-1] area 0
      [PE_1-ospf-1-area-0.0.0.0] network 1.1.1.0 0.0.0.255
      [PE_1-ospf-1-area-0.0.0.0] network 2.2.2.9 0.0.0.0
      [PE_1-ospf-1-area-0.0.0.0] quit
      [PE_1-ospf-1] quit
      

      # Configure PE_2.

      <Huawei> system-view
      [Huawei] sysname PE_2
      [PE_2] interface loopback 1
      [PE_2-LoopBack1] ip address 3.3.3.9 32
      [PE_2-LoopBack1] quit
      [PE_2] interface gigabitethernet 1/0/0 
      [PE_2-GigabitEthernet1/0/0] ip address 1.1.1.2 24
      [PE_2-GigabitEthernet1/0/0] quit
      [PE_2] ospf
      [PE_2-ospf-1] area 0
      [PE_2-ospf-1-area-0.0.0.0] network 1.1.1.0 0.0.0.255
      [PE_2-ospf-1-area-0.0.0.0] network 3.3.3.9 0.0.0.0
      [PE_2-ospf-1-area-0.0.0.0] quit
      [PE_2-ospf-1] quit
      

    2. Configure basic MPLS functions, enable MPLS LDP, and establish LDP LSPs on the MPLS backbone network.

      # Configure PE_1.

      [PE_1] mpls lsr-id 2.2.2.9
      [PE_1] mpls
      [PE_1-mpls] quit
      [PE_1] mpls ldp
      [PE_1-mpls-ldp] quit
      [PE_1] interface gigabitethernet 1/0/0
      [PE_1-GigabitEthernet1/0/0] mpls
      [PE_1-GigabitEthernet1/0/0] mpls ldp
      [PE_1-GigabitEthernet1/0/0] quit

      # Configure PE_2.

      [PE_2] mpls lsr-id 3.3.3.9
      [PE_2] mpls
      [PE_2-mpls] quit
      [PE_2] mpls ldp
      [PE_2-mpls-ldp] quit
      [PE_2] interface gigabitethernet 1/0/0
      [PE_2-GigabitEthernet1/0/0] mpls
      [PE_2-GigabitEthernet1/0/0] mpls ldp
      [PE_2-GigabitEthernet1/0/0] quit
      

    3. Configure a VPN instance.

      # Configure PE_1.

      [PE_1] ip vpn-instance vpna
      [PE_1-vpn-instance-vpna] ipv4-family
      [PE_1-vpn-instance-vpna-af-ipv4] route-distinguisher 100:1
      [PE_1-vpn-instance-vpna-af-ipv4] vpn-target 111:1 both
      [PE_1-vpn-instance-vpna-af-ipv4] quit
      [PE_1-vpn-instance-vpna] quit
      [PE_1] interface gigabitethernet 2/0/0
      [PE_1-GigabitEthernet2/0/0] ip binding vpn-instance vpna
      [PE_1-GigabitEthernet2/0/0] ip address 10.3.1.2 24
      [PE_1-GigabitEthernet2/0/0] quit
      

      # Configure PE_2.

      [PE_2] ip vpn-instance vpna
      [PE_2-vpn-instance-vpna] ipv4-family
      [PE_2-vpn-instance-vpna-af-ipv4] route-distinguisher 200:1
      [PE_2-vpn-instance-vpna-af-ipv4] vpn-target 111:1 both
      [PE_2-vpn-instance-vpna-af-ipv4] quit
      [PE_2-vpn-instance-vpna] quit
      [PE_2] interface gigabitethernet 2/0/0
      [PE_2-GigabitEthernet2/0/0] ip binding vpn-instance vpna
      [PE_2-GigabitEthernet2/0/0] ip address 10.3.2.2 24
      [PE_2-GigabitEthernet2/0/0] quit
      [PE_2] interface gigabitethernet 3/0/0
      [PE_2-GigabitEthernet3/0/0] ip binding vpn-instance vpna
      [PE_2-GigabitEthernet3/0/0] ip address 10.3.3.2 24
      [PE_2-GigabitEthernet3/0/0] quit
      

    4. Establish MP-IBGP peer relationships between the PE devices.

      # Configure PE_1.

      [PE_1] bgp 100
      [PE_1-bgp] peer 3.3.3.9 as-number 100
      [PE_1-bgp] peer 3.3.3.9 connect-interface loopback 1
      [PE_1-bgp] ipv4-family vpnv4
      [PE_1-bgp-af-vpnv4] peer 3.3.3.9 enable
      [PE_1-bgp-af-vpnv4] quit
      [PE_1-bgp] quit

      # Configure PE_2.

      [PE_2] bgp 100
      [PE_2-bgp] peer 2.2.2.9 as-number 100
      [PE_2-bgp] peer 2.2.2.9 connect-interface loopback 1
      [PE_2-bgp] ipv4-family vpnv4
      [PE_2-bgp-af-vpnv4] peer 2.2.2.9 enable
      [PE_2-bgp-af-vpnv4] quit
      [PE_2-bgp] quit

    5. Set up EBGP peer relationships between the PE devices, GMs, and the KS, and import VPN routes.

      # Configure PE_1.

      [PE_1] bgp 100
      [PE_1-bgp] ipv4-family vpn-instance vpna
      [PE_1-bgp-vpna] peer 10.3.1.1 as-number 65410
      [PE_1-bgp-vpna] import-route direct
      [PE_1-bgp-vpna] quit
      [PE_1-bgp] quit

      # Configure PE_2.

      [PE_2] bgp 100
      [PE_2-bgp] ipv4-family vpn-instance vpna
      [PE_2-bgp-vpna] peer 10.3.2.1 as-number 65430
      [PE_2-bgp-vpna] peer 10.3.3.1 as-number 65420
      [PE_2-bgp-vpna] import-route direct
      [PE_2-bgp-vpna] quit
      [PE_2-bgp] quit

  3. Configure GM_1. The configuration of GM_2 is similar to that of GM_1 and is not mentioned here.
    1. Configure the interface IP addresses.

      <Huawei> system-view
      [Huawei] sysname GM_1
      [GM_1] interface gigabitethernet 1/0/0 
      [GM_1-GigabitEthernet1/0/0] ip address 10.3.1.1 255.255.255.0
      [GM_1-GigabitEthernet1/0/0] quit
      [GM_1] interface gigabitethernet 2/0/0
      [GM_1-GigabitEthernet2/0/0] ip address 10.1.1.1 255.255.255.0
      [GM_1-GigabitEthernet2/0/0] quit
      

    2. Configure an EBGP peer and import VPN routes.

      [GM_1] bgp 65410
      [GM_1-bgp] peer 10.3.1.2 as-number 100
      [GM_1-bgp] import-route direct
      [GM_1-bgp] quit
      

    3. Configure an IKE peer. The IKE negotiation parameters must be the same as those on the KS.

      # Configure an IKE proposal.
      [GM_1] ike proposal 5
      [GM_1-ike-proposal-5] authentication-method pre-share
      [GM_1-ike-proposal-5] encryption-algorithm aes-128
      [GM_1-ike-proposal-5] authentication-algorithm sha2-256
      [GM_1-ike-proposal-5] dh group14
      [GM_1-ike-proposal-5] quit
      

      # Configure an IKE peer.

      [GM_1] ike peer spub
      [GM_1-ike-peer-spub] undo version 2
      [GM_1-ike-peer-spub] ike-proposal 5
      [GM_1-ike-peer-spub] pre-shared-key cipher Huawei@123
      [GM_1-ike-peer-spub] remote-address 10.3.3.1
      [GM_1-ike-peer-spub] quit

    4. Configure a GDOI policy. The group ID of the GM must be the same as that of the KS.

      [GM_1] ipsec policy map1 10 gdoi
      [GM_1-ipsec-policy-gdoi-map1-10] group identity number 10
      [GM_1-ipsec-policy-gdoi-map1-10] ike-peer spub
      [GM_1-ipsec-policy-gdoi-map1-10] quit
      

    5. Apply the GDOI policy group to the interface.

      [GM_1] interface gigabitethernet 1/0/0
      [GM_1-GigabitEthernet1/0/0] ipsec policy map1
      [GM_1-GigabitEthernet1/0/0] quit
      

  4. Verify the configuration.

    # After the configuration is complete, run the display ike sa command on the devices to view information about the IKE SAs. The command output shows that the IKE SAs between the KS and GM_1/GM_2 are successfully established. The following uses the KS as an example:

    [KS] display ike sa
     Conn-ID    Peer             VPN       Flag(s)        Phase  RemoteType  RemoteID
    ----------------------------------------------------------------------------------
     1840       10.3.1.1:848               RD|A           v1:1   IP          10.3.1.1
     1839       10.3.2.1:848               RD|A           v1:1   IP          10.3.2.1
    
      Number of IKE SA : 2
    ----------------------------------------------------------------------------------
    
     Flag Description:
     RD--READY   ST--STAYALIVE   RL--REPLACED   FD--FADING   TO--TIMEOUT
     HRT--HEARTBEAT   LKG--LAST KNOWN GOOD SEQ NO.   BCK--BACKED UP
     M--ACTIVE   S--STANDBY   A--ALONE  NEG--NEGOTIATING

    # Run the display ipsec gdoi-sa command on each GM to display information about the GDOI SA. The following uses GM_1 as an example:

    [GM_1] display ipsec gdoi-sa
    ===============================
    Interface: GigabitEthernet1/0/0
     Path MTU: 0
    ===============================
      ---------------------------------
      Gdoi policy name         : "map1"
      Sequence number          : 10
      ---------------------------------
        [TEK SA]
        Protected vrf : 0
        Protocol: 0/permit
        Flow source      : 10.1.1.0/255.255.255.0/0
        Flow destination : 10.1.2.0/255.255.255.0/0
    
        Protocol: 0/permit
        Flow source      : 10.1.2.0/255.255.255.0/0
        Flow destination : 10.1.1.0/255.255.255.0/0
    
        Inpacket count            : 0
        Inpacket decap count      : 0
        Outpacket count           : 0
        Outpacket encap count     : 0
        Inpacket drop count       : 0
        Outpacket drop count      : 0
        Anti-replay drop count    : 0
    
        SA mode : normal
        SPI: 1518309369 (0x5a7f8ff9)
        Proposal : ESP-ENCRYPT-AES-128 ESP-AUTH-SHA2-256-128
        SA remaining lifetime (secs) : 3486
        Anti-replay (time based) : disable
    
        [KEK POLICY]
        Rekey transport type        : unicast
        SPI: 0xb2540a5e8623fd4dfce1ee0e89937198
        Received rekey seqno        : 0
        Lifetime (secs)             : 86286
        Encrypt algorithm           : AES
        Encrypt key size            : 128
        Signature hash algorithm    : HMAC_AUTH_SHA2_512
        Signature key length (bits) : 2160
        Signature algorithm         : SIG_ALG_RSA

    # Run the ping -a source-ip-address host command on each GM to ping the private IP address. If the ping operation succeeds, services on both ends can be forwarded normally. The following uses GM_1 as an example:

    [GM_1] ping -a 10.1.1.1 10.1.2.2
      PING 10.1.2.2: 56  data bytes, press CTRL_C to break
        Reply from 10.1.2.2: bytes=56 Sequence=1 ttl=255 time=89 ms
        Reply from 10.1.2.2: bytes=56 Sequence=2 ttl=255 time=1 ms
        Reply from 10.1.2.2: bytes=56 Sequence=3 ttl=255 time=1 ms
        Reply from 10.1.2.2: bytes=56 Sequence=4 ttl=255 time=1 ms
        Reply from 10.1.2.2: bytes=56 Sequence=5 ttl=255 time=1 ms
    
      --- 10.1.2.2 ping statistics ---
        5 packet(s) transmitted
        5 packet(s) received
        0.00% packet loss
        round-trip min/avg/max = 1/18/89 ms

Configuration Files

  • KS configuration file

    #
     sysname KS
    #
    acl number 3001
     rule 5 permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255
     rule 10 permit ip source 10.1.2.0 0.0.0.255 destination 10.1.1.0 0.0.0.255
    #
    ipsec proposal tran1
     esp authentication-algorithm sha2-256
     esp encryption-algorithm aes-128
    #
    ike proposal 5
     encryption-algorithm aes-128
     dh group14
     authentication-algorithm sha2-256
     authentication-method pre-share
    #
    ike user-table 10
     user gm2
      id-type ip 10.3.2.1
      pre-shared-key %^%#5FM@~#qRB6!z"YT[gn;6~aCG:K}f(B'wpjJ0!:xO%^%#
     user gm1
      id-type ip 10.3.1.1
      pre-shared-key %^%#5FM@~#qRB6!z"YT[gn;6~aCG:K}f(B'wpjJ0!:xO%^%#
    #
    gdoi ks group test
     group identity number 10
     rekey transport-type unicast 
     rekey sig-hash-algorithm sha2-512
     rekey encryption-algorithm aes-128
     user-table 10
     rekey authentication public-key rsa keytest
     ipsec 5
      proposal tran1
      security acl 3001
     source address 10.3.3.1
    #
    interface GigabitEthernet1/0/0
     ip address 10.3.3.1 255.255.255.0
    #
    bgp 65420
     peer 10.3.3.2 as-number 100
     #
     ipv4-family unicast
      undo synchronization
      import-route direct
      peer 10.3.3.2 enable
    #
    return
    
  • PE_1 configuration file

    #
     sysname PE_1
    #
    ip vpn-instance vpna
     ipv4-family
      route-distinguisher 100:1
      vpn-target 111:1 export-extcommunity
      vpn-target 111:1 import-extcommunity
    #
    mpls lsr-id 2.2.2.9
    mpls
    #
    mpls ldp
    #
    interface GigabitEthernet1/0/0
     ip address 1.1.1.1 255.255.255.0
     mpls
     mpls ldp
    # 
    interface GigabitEthernet2/0/0
     ip binding vpn-instance vpna
     ip address 10.3.1.2 255.255.255.0
    #
    interface LoopBack1
     ip address 2.2.2.9 255.255.255.255
    # 
    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 10.3.1.1 as-number 65410
    #
    ospf 1
     area 0.0.0.0
      network 1.1.1.0 0.0.0.255
      network 2.2.2.9 0.0.0.0
    #
    return
  • PE_2 configuration file

    #
     sysname PE_2
    #
    ip vpn-instance vpna
     ipv4-family  
      route-distinguisher 200:1
      vpn-target 111:1 export-extcommunity
      vpn-target 111:1 import-extcommunity
    #
    mpls lsr-id 3.3.3.9
    mpls
    #
    mpls ldp
    #
    interface GigabitEthernet1/0/0
     ip address 1.1.1.2 255.255.255.0
     mpls
     mpls ldp
    # 
    interface GigabitEthernet2/0/0
     ip binding vpn-instance vpna
     ip address 10.3.2.2 255.255.255.0
    # 
    interface GigabitEthernet3/0/0
     ip binding vpn-instance vpna
     ip address 10.3.3.2 255.255.255.0
    # 
    interface LoopBack1
     ip address 3.3.3.9 255.255.255.255
    #
    bgp 100
     peer 2.2.2.9 as-number 100
     peer 2.2.2.9 connect-interface LoopBack1
     #
     ipv4-family unicast
      undo synchronization
      peer 2.2.2.9 enable
     #
     ipv4-family vpnv4
      policy vpn-target
      peer 2.2.2.9 enable 
     #
     ipv4-family vpn-instance vpna
      import-route direct
      peer 10.3.2.1 as-number 65430
      peer 10.3.3.1 as-number 65420
     #
    ospf 1
     area 0.0.0.0
      network 1.1.1.0 0.0.0.255
      network 3.3.3.9 0.0.0.0
    # 
    return
  • GM_1 configuration file

    #
     sysname GM_1
    #
    ike proposal 5
     encryption-algorithm aes-128
     dh group14
     authentication-algorithm sha2-256
     authentication-method pre-share
    #
    ike peer spub
     undo version 2
     pre-shared-key cipher %^%#5FM@~#qRB6!z"YT[gn;6~aCG:K}f(B'wpjJ0!:xO%^%#
     ike-proposal 5
     remote-address 10.3.3.1
    #
    ipsec policy map1 10 gdoi
     group identity number 10
     ike-peer spub
    #
    interface GigabitEthernet1/0/0
     ip address 10.3.1.1 255.255.255.0
     ipsec policy map1
    #
    interface GigabitEthernet2/0/0
     ip address 10.1.1.1 255.255.255.0
    #
    bgp 65410
     peer 10.3.1.2 as-number 100
     #
     ipv4-family unicast
      undo synchronization
      import-route direct
      peer 10.3.1.2 enable
    #
    return
    
  • GM_2 configuration file

    #
     sysname GM_2
    #
    ike proposal 5
     encryption-algorithm aes-128
     dh group14
     authentication-algorithm sha2-256
     authentication-method pre-share
    #
    ike peer spub
     undo version 2 
     pre-shared-key cipher %^%#5FM@~#qRB6!z"YT[gn;6~aCG:K}f(B'wpjJ0!:xO%^%#
     ike-proposal 5
     remote-address 10.3.3.1
    #
    ipsec policy map1 10 gdoi
     group identity number 10
     ike-peer spub
    #
    interface GigabitEthernet1/0/0
     ip address 10.3.2.1 255.255.255.0
     ipsec policy map1
    #
    interface GigabitEthernet2/0/0
     ip address 10.1.2.1 255.255.255.0
    #
    bgp 65430
     peer 10.3.2.2 as-number 100
     #
     ipv4-family unicast
      undo synchronization
      import-route direct
      peer 10.3.2.2 enable
    #
    return
    
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Updated: 2019-08-07

Document ID: EDOC1100033725

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