Most imqcmd subcommands use the -b option to specify the host name and port number of the broker to which the command applies:
-b hostName:portNumber
If no broker is specified, the command applies by default to a broker running on the local host (localhost) at port number 7676. To issue a command to a broker that is running on a remote host, listening on a nondefault port, or both, you must use the -b option to specify the host and port explicitly.