3Select Test Setup from the Test menu.
4Enable the Group 2 test. Select OK and press [Enter].
5Go to the Run Tests dialog box to start the tests.
6After the test is completed:
a Exit the Configuration and Diagnostic Program. b Remove the loopback plug.
Running the Group 3 Test
The Group 3 test is called the Echo Exchange Test. It tests the adapter’s ability to transmit and receive data while on the network.
CAUTION: Running the Group 3 test while connected to an active network can cause intermittent failures. To avoid this, connect to an inactive network on which only the computer being tested and the echo server are operating.
To run the Group 3 test on the network, you need a second computer set up as an echo server. The echo server receives packets from the adapter being tested and echoes them back to the adapter. The second computer must be equipped with a 3Com adapter.
Setting Up an Echo Server
If your echo server contains a 3C592 EISA adapter, select Echo Server under the Test menu, and click the Start button to make the computer an echo server.
If you are setting up an echo server using a 3Com adapter other than a 3C592 EISA adapter, follow these steps:
1Select a computer to use as an echo server.
2Insert the EtherDisk diskette in a floppy drive.
The diagnostic program comes on the EtherDisk diskette that accompanied the adapter.