EZD1311I

Explanation
 The control connection to the non-z/OS target
has been closed as the result of a protocol error. The non-z/OS target
cannot be used as a target for distributed connections.  
 In
the message text:  ip_addr
The  IP address of a distributed non-z/OS target.
internal_retcode
The internal return code that was set by the function that detected
the protocol error.

System action
 TCP/IP continues.

Operator response
 Contact the system programmer.

System programmer response
 Contact the IBM® software support services with the TCP/IP
profile and the system log.

User response
 Not applicable.

Problem determination
 Not applicable.

Source
 z/OS® Communications
Server TCP/IP: Sysplex Distributor

Module
 EZBXFSUB

Routing code
 2,8

Descriptor code
 12

Automation
 This message is written to the system console.
This message is a good candidate for automation. Automation can allow
you to monitor the status of sysplex distributor control connections
to non-z/OS targets.

Example
  EZD1311I SYSPLEX DISTRIBUTOR CONTROL CONNECTION TO DESTINATION IP ADDRESS   9.42.105.53 CLOSED DUE TO 
         PROTOCOL ERROR WITH RETURN CODE 00000016