Creates an event dispatcher replay entity which processes events
    from Phase IV systems.  It receives Phase IV format events and
    posts them into the DECnet-Plus logging system.

    create  [node node-id] event dispatcher relay

1  –  Exception Messages

 o  process failure

    The event dispatcher relay entity probably already exists.

 o  entity class not supported (OpenVMS)

    The Event Dispatcher has not registered with EMAA.  The NET$EVD
    process is probably not running.  For instructions on restarting
    the process, refer to HELP NETWORK_MANAGEMENT EVENT_DISPATCHER.