EZD1901I

Explanation
 The authentication method that is identified in
the authentication payload that was sent by the  remote security endpoint
is not supported.  The Internet Key Exchange (IKE) daemon cannot authenticate
 the remote security endpoint. 
 In the message text:  remote_ip
The remote security endpoint IP specification.
remote_port
The remote port of the IKE daemon peer.
auth_method_string
The string that identifies the authentication method being  used
by the peer.
auth_method 
The decimal value that represents the authentication method that
is used by the peer.

System action
 The IKE SA negotiation fails; IKE daemon processing
continues.

Operator response
 Contact the system programmer.

System programmer response
 Notify the administrator of the remote
security endpoint that it is using an  unsupported authentication
method.

User response
 Not applicable.

Problem determination
 None.

Source
 z/OS® Communications
Server TCP/IP: IKE daemon

Module
 IKEv2IKEAuthRequest.cpp, IKEv2IKEAuthResponse.cpp

Routing code
 11

Descriptor code
 7

Automation
  This message is output to syslog.

Example
  EZD1901I Remote security endpoint at 1.2.3.4 port 500 is using an unsupported authentication 
         method DSS_Digital_Signature 3