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# Create an IKE-based IPsec policy entry with the name use1 and the sequence number 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
# Reference ACL 3101 to identify the traffic to be protected.
[SwitchB-ipsec-policy-isakmp-use1-10] security acl 3101
# Reference IPsec transform set tran1 for the IPsec policy.
[SwitchB-ipsec-policy-isakmp-use1-10] transform-set tran1
# Specify IKE profile profile1 for the IPsec policy.
[SwitchB-ipsec-policy-isakmp-use1-10] ike-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
Verifying the configuration
# Initiate a connection from Switch A to Switch B to trigger IKE negotiation. After IPsec SAs are
successfully negotiated by IKE, traffic between the two switches is IPsec protected.
Troubleshooting IKE
IKE negotiation failed because no matching IKE proposals
were found
Symptom
1. The IKE SA is in Unknown state.
<Sysname> display ike sa
Connection-ID Remote Flag DOI
------------------------------------------------------------------
1 192.168.222.5 Unknown IPSEC
Flags:
RD--READY RL--REPLACED FD-FADING
2. When IKE event debugging and packet debugging are enabled, the following messages appear:
IKE event debugging message:
The attributes are unacceptable.
IKE packet debugging message:
Construct notification packet: NO_PROPOSAL_CHOSEN.
Analysis
Certain IKE proposal settings are incorrect.
Solution
1. Examine the IKE proposal configuration to see whether the two ends have matching IKE proposals.
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