Dubbo service framework, we use project service invocation will produce communication between

As shown in figure
One of the communication port is our own dubbo service port, specify a different port is randomly generated communication port
Now have a trouble, because it is a development environment, so we update everyday dubbo services; Use of Jenkins builds, so will start multiple dubbo service at the same time, the problem then, service rev up occasionally happen, because port is occupied; Because there is a communication port is randomly generated, so it can't control; Is there any way you can specify a set of port don't let the Linux used as a randomly generated communication port?