### Testing the Port Connection

Use this troubleshooting procedure to test the port connection from the operating system.

Procedure

1. Before disconnecting any cabling, ensure you have disabled the services (if you have already enabled them) on that port.
2. Disconnect the cabling to the port on which you are testing.
3. On the PortServer, press the right arrow until the LED indicator displays the port you are testing.

> None of the indicator lights should be lit at this point. Continue with this procedure. If the indicator lights are lit, go to PortServer Front Panel.

4. Enter on the command line:

> > `ditty -a portname`

> > where `portname` is the name of the port you are testing.

5. Choose Back to return to and continue with the Master Troubleshooting Process.