IKEv2 with pre-shared key authentication configuration example

Network requirements

As shown in Figure 100, configure an IKE-based IPsec tunnel between Switch A and Switch B to secure the communication between them.

Figure 99: Network diagram

Configuration procedures

  1. Configure Switch A:

    # Assign an IP address to VLAN-interface 1.

    <SwitchA> system-view
    [SwitchA] interface vlan-interface 1
    [SwitchA-vlan-interface1] ip address 1.1.1.1 255.255.255.0
    [SwitchA-vlan-interface1] quit
    

    # Configure IPv4 advanced ACL 3101 to identify the traffic between Switch A and Switch B.

    [SwitchA] acl advanced 3101
    [SwitchA-acl-ipv4-adv-3101] rule 0 permit ip source 1.1.1.1 0 destination 2.2.2.2 0
    [SwitchA-acl-ipv4-adv-3101] quit
    

    # Create an IPsec transform set named tran1.

    [SwitchA] ipsec transform-set tran1
    

    # Set the packet encapsulation mode to tunnel.

    [SwitchA-ipsec-transform-set-tran1] encapsulation-mode tunnel
    

    # Use the ESP protocol for the IPsec transform set.

    [SwitchA-ipsec-transform-set-tran1] protocol esp
    

    # Specify the encryption and authentication algorithms.

    [SwitchA-ipsec-transform-set-tran1] esp encryption-algorithm des-cbc
    [SwitchA-ipsec-transform-set-tran1] esp authentication-algorithm sha1
    [SwitchA-ipsec-transform-set-tran1] quit
    

    # Create an IKEv2 keychain named keychain1.

    [SwitchA] ikev2 keychain keychain1
    

    # Create an IKEv2 peer named peer1.

    [SwitchA-ikev2-keychain-keychain1] peer peer1
    

    # Specify the peer IP address 2.2.2.2/24.

    [SwitchA-ikev2-keychain-keychain1-peer-peer1] address 2.2.2.2 24
    

    # Specify the peer ID, which is the IP address 2.2.2.2.

    [SwitchA-ikev2-keychain-keychain1-peer-peer1] identity address 2.2.2.2
    

    # Specify abcde in plain text as the pre-shared key to be used with the peer.

    [SwitchA-ikev2-keychain-keychain1-peer-peer1] pre-shared-key plaintext abcde
    [SwitchA-ikev2-keychain-keychain1-peer-peer1] quit
    [SwitchA-ikev2-keychain-keychain1] quit
    

    # Create an IKEv2 profile named profile1.

    [SwitchA] ikev2 profile profile1
    

    # Specify the local authentication method as pre-shared key.

    [SwitchA-ikev2-profile-profile1] authentication-method local pre-share
    

    # Specify the remote authentication method as pre-shared key.

    [SwitchA-ikev2-profile-profile1] authentication-method remote pre-share
    

    # Specify IKEv2 keychain keychain1.

    [SwitchA-ikev2-profile-profile1] keychain keychain1
    

    # Specify the peer ID that the IKEv2 profile matches. The peer ID is the IP address 2.2.2.2/24.

    [SwitchA-ikev2-profile-profile1] match remote identity address 2.2.2.2 255.255.255.0
    [SwitchA-ikev2-profile-profile1] quit
    

    # Create an IKE-based IPsec policy entry. Specify the policy name as map1 and set the sequence number to 10.

    [SwitchA] ipsec policy map1 10 isakmp
    

    # Specify the remote IP address 2.2.2.2 for the IPsec tunnel.

    [SwitchA-ipsec-policy-isakmp-map1-10] remote-address 2.2.2.2
    

    # Specify ACL 3101 to identify the traffic to be protected.

    [SwitchA-ipsec-policy-isakmp-map1-10] security acl 3101
    

    # Specify IPsec transform set tran1 for the IPsec policy.

    [SwitchA-ipsec-policy-isakmp-map1-10] transform-set tran1
    

    # Specify IKEv2 profile profile1 for the IPsec policy.

    [SwitchA-ipsec-policy-isakmp-map1-10] ikev2-profile profile1
    [SwitchA-ipsec-policy-isakmp-map1-10] quit
    

    # Apply IPsec policy map1 to VLAN-interface 1.

    [SwitchA] interface vlan-interface 1
    [SwitchA-Vlan-interface1] ipsec apply policy map1
    

    # Specify an Ethernet interface module or a service module for forwarding the traffic on the interface.

    [SwitchA-Vlan-interface1] service slot 3
    [SwitchA-Vlan-interface1] quit 
    
  2. Configure Switch B:

    # Assign an IP address to VLAN-interface 1.

    <SwitchB> system-view
    [SwitchB] interface Vlan-interface1
    [SwitchB-Vlan-interface1] ip address 2.2.2.2 255.255.255.0
    [SwitchB-Vlan-interface1] quit
    

    # Configure IPv4 advanced ACL 3101 to identify the traffic between Switch B and Switch A.

    [SwitchB] acl advanced 3101
    [SwitchB-acl-ipv4-adv-3101] rule 0 permit ip source 2.2.2.2 0 destination 1.1.1.1 0
    [SwitchB-acl-ipv4-adv-3101] quit
    

    # Create an IPsec transform set named tran1.

    [SwitchB] ipsec transform-set tran1
    

    # Set the packet encapsulation mode to tunnel.

    [SwitchB-ipsec-transform-set-tran1] encapsulation-mode tunnel
    

    # Use the ESP protocol for the IPsec transform set.

    [SwitchB-ipsec-transform-set-tran1] protocol esp
    

    # Specify the encryption and authentication algorithms.

    [SwitchB-ipsec-transform-set-tran1] esp encryption-algorithm des-cbc
    [SwitchB-ipsec-transform-set-tran1] esp authentication-algorithm sha1
    [SwitchB-ipsec-transform-set-tran1] quit
    

    # Create an IKEv2 keychain named keychain1.

    [SwitchB] ikev2 keychain keychain1
    

    # Create an IKEv2 peer named peer1.

    [SwitchB-ikev2-keychain-keychain1] peer peer1
    

    # Specify the peer IP address 1.1.1.1/24.

    [SwitchB-ikev2-keychain-keychain1-peer-peer1] address 1.1.1.1 24
    

    # Specify the peer ID, which is the IP address 1.1.1.1.

    [SwitchB-ikev2-keychain-keychain1-peer-peer1] identity address 1.1.1.1
    

    # Specify abcde in plain text as the pre-shared key to be used with the peer.

    [SwitchB-ikev2-keychain-keychain1-peer-peer1] pre-shared-key plaintext abcde
    [SwitchB-ikev2-keychain-keychain1-peer-peer1] quit
    [SwitchB-ikev2-keychain-keychain1] quit
    

    # Create an IKEv2 profile named profile1.

    [SwitchB] ikev2 profile profile1
    

    # Specify the local authentication method as pre-shared key.

    [SwitchB-ikev2-profile-profile1] authentication-method local pre-share
    

    # Specify the remote authentication method as pre-shared key.

    [SwitchB-ikev2-profile-profile1] authentication-method remote pre-share
    

    # Specify IKEv2 keychain keychain1.

    [SwitchB-ikev2-profile-profile1] keychain keychain1
    

    # Specify the peer ID that the IKEv2 profile matches. The peer ID is the IP address 1.1.1.1/24.

    [SwitchB-ikev2-profile-profile1] match remote identity address 1.1.1.1 255.255.255.0
    [SwitchB-ikev2-profile-profile1] quit
    

    # Create an IKE-based IPsec policy entry. Specify the policy name as use1 and set the sequence number to 10.

    [SwitchB] ipsec policy use1 10 isakmp
    

    # Specify the remote IP address 1.1.1.1 for the IPsec tunnel.

    [SwitchB-ipsec-policy-isakmp-use1-10] remote-address 1.1.1.1
    

    # Specify ACL 3101 to identify the traffic to be protected.

    [SwitchB-ipsec-policy-isakmp-use1-10] security acl 3101
    

    # Specify IPsec transform set tran1 for the IPsec policy.

    [SwitchB-ipsec-policy-isakmp-use1-10] transform-set tran1
    

    # # Specify IKEv2 profile profile1 for the IPsec policy.

    [SwitchB-ipsec-policy-isakmp-use1-10] ikev2-profile profile1
    [SwitchB-ipsec-policy-isakmp-use1-10] quit
    

    # Apply IPsec policy use1 to VLAN-interface 1.

    [SwitchB] interface vlan-interface 1
    [SwitchB-Vlan-interface1] ipsec apply policy use1
    

    # Specify an Ethernet interface module or a service module for forwarding the traffic on the interface.

    [SwitchB-Vlan-interface1] service slot 3
    [SwitchB-Vlan-interface1] quit
    

Verifying the configuration

# Initiate a connection between Switch A and Switch B to trigger IKEv2 negotiation. After IPsec SAs are successfully negotiated by IKEv2, traffic between the switches is IPsec protected.