3Com MSR 50 Series Configuration Manual page 1899

IPSec Configuration Example 1899
# Specify the encapsulation mode as tunnel.
[RouterB-ipsec-proposal-tran1] encapsulation-mode tunnel
# Specify the security protocol as ESP.
[RouterB-ipsec-proposal-tran1] transform esp
# Specify the algorithms.
[RouterB-ipsec-proposal-tran1] esp encryption-algorithm des
[RouterB-ipsec-proposal-tran1] esp authentication-algorithm sha1
[RouterB-ipsec-proposal-tran1] quit
# Configure the IKE peer.
[RouterB] ike peer peer
[RouterB-ike-peer-peer] pre-share-key abcde
[RouterB-ike-peer-peer] remote-address 2.2.2.1
[RouterB-ike-peer-peer] quit
# Create an IPSec policy, specifying to use the IKE negotiation mode.
[RouterB] ipsec policy use1 10 isakmp
# Apply the ACL.
[RouterB-ipsec-policy-isakmp-use1-10] security acl 3101
# Apply the proposal.
[RouterB-ipsec-policy-isakmp-use1-10] proposal tran1
# Apply the IKE peer.
[RouterB-ipsec-policy-isakmp-use1-10] ike-peer peer
[RouterB-ipsec-policy-isakmp-use1-10] quit
# Configure the IP address of the serial interface.
[RouterB] interface serial 2/2
[RouterB-Serial2/2] ip address 2.2.3.1 255.255.255.0
# Apply the policy group to the interface.
[RouterB-Serial2/2] ipsec policy use1
[RouterB-Serial2/2] quit
# Enter encryption card interface view.
[RouterA] interface encrypt-card 5/2
# Bind the IPSec policy to the card and specify the card as the primary.
[RouterA-encrypt-card5/2] ipsec binding policy use1 10 primary
[RouterA-encrypt-card5/2] quit