IKEv2 with pre-shared key authentication configuration example

As shown in Figure 90, configure an IKE-based IPsec tunnel between Switch A and Switch B to secure the communication between the switches.

• Configure Switch A and Switch B to use the default IKEv2 proposal and the default IKEv2 policy in IKEv2 negotiation to set up IPsec SAs.

• Configure the two switches to use the pre-shared key authentication method in IKEv2 negotiation.

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 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 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 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 at 2.2.2.2.

   [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 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 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
   [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 traffic between Switch A and Switch B.

   [SwitchB] acl advanced 3101
   [SwitchB-acl-ipv4-adv-3101] rule 0 permit ip source 2.2.2.2 0 destination 1.1.1.0 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 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 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 at 1.1.1.1.

   [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 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 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
   [SwitchB-Vlan-interface1] quit
   

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