TCP listener port numbers


Error icon Queue manager (<queue manager name>) has a TCP listener (<listener name>) on a reserved port (<number>).

TCP port numbers below 1024 are usually reserved for well-known processes, such as operating system services. Your listener might continue to function using this port number, but it might cause future conflicts.

Changing the listener port minimises the chance of a conflict occuring, however the Connection Name attribute on any channels that target this listener must also be changed to reference the new port.

Error icon Multiple listener definitions on <host name> are using the port number (<number>) for TCP listeners (<listener name>).

Multiple services cannot listen simultaneously on the same TCP port number. If you intend to run these listeners concurrently, assign them unique port numbers.

See the IBM MQ Information Center for more information about using listeners.