When the Open Agent starts, a random available port is assigned to Silk Test Classic, Silk Test Recorder, and the application that you are testing. The port numbers are registered on the information service. Silk Test Classic and Silk Test Recorder contact the information service to determine the port to use to connect to the Open Agent. The information service communicates the appropriate port, and Silk Test Classic or the Silk Test Recorder connect to that port. Communication runs directly between Silk Test Classic or the Silk Test Recorder and the agent.
By default, the Open Agent communicates with the information service on port 22901. You can configure additional ports for the information service as alternate ports that work when the default port is not available. By default, the information service uses ports 2966, 11998, and 11999 as alternate ports.
Typically, you do not have to configure port numbers manually. However, if you have a port number conflict or an issue with a firewall, you must configure the port number for that machine or for the information service. You can use a different port number for a single machine or you can use the same available port number for all your machines.