IKE negotiation failed because no matching IKE proposals were found

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.
   

Certain IKE proposal settings are incorrect.

1. Examine the IKE proposal configuration to see whether the two ends have matching IKE proposals.

2. Modify the IKE proposal configuration to make sure the two ends have matching IKE proposals.