3Com 155 PCI manual Diagnostics And, Troubleshooting, Overview

6	DIAGNOSTICS AND
	TROUBLESHOOTING

This chapter describes how to use the ATMLink diagnostic utility program shipped on the ATMDisk diskettes.

Overview

The ATMLink diagnostic utility and its associated help files are in the root directory of the ATMDisk diskettes. The diagnostic utility is an MS-DOS®program (3C975CFG.EXE) that performs the following key functions:

■Detects and reports the PCI-bus slot number, interrupt request level, base MAC address, and other configuration data of all installed 3Com ATMLink physical NICs

■Tests the operation of the 3C975 ATMLink NIC on-board circuitry

■Displays EEPROM-based device information for each 3C975 ATMLink NIC

The diagnostic test suite is divided into two groups, the internal and external tests. Six internal tests check the integrity of the segmentation and reassembly (SAR) controller and associated components. The external loopback test checks the integrity of the on-board transceiver and cable connectors.

To run the external loopback test, you must use a loopback plug. To construct a loopback plug, see the section “Constructing Loopback Plugs” later in this chapter.

Any individual test in the suite can be enabled or disabled. These test configuration settings can be saved to disk. Test results can be viewed on-screen or printed.