Allied Telesis AT-2973T (NetExtreme II) - Manual (Page 102)

Chapter 8: Troubleshooting
102
Hardware Diagnostics
Loopback diagnostic tests are available for testing the adapter hardware.
These tests provide access to the adapter internal/external diagnostics,
where packet information is transmitted across the physical link. For
instructions and information on running tests in an MS-DOS environment,
see Chapter 9, “User Diagnostics” on page 115; for Windows
environments, see “Running Diagnostic Tests” in the Broadcom Advanced
Control Suite 3 User Guide.