6-2 CHAPTER 6: DIAGNOSTICS AND TROUBLESHOOTING

When to Use the Diagnostic Utility

3Com suggests that you run the diagnostic utility immediately after installing the 3C975 ATMLink NIC, and before installing the network drivers.

Use the diagnostic utility in the following cases:

To verify that the hardware works before the network drivers are installed

If the NIC or the PCI bus is not functioning properly, you save the trouble of loading and configuring the network driver and ELANs.

If you want to correlate the PCI slot number with the MAC address of a 3C975 ATMLink NIC

You need this information for installing and configuring Windows NT network drivers when there is more than one physical NIC in the system.

If the network drivers fail to load

The internal and external tests determine whether the components on the NIC are functioning correctly.

If there is no network activity, or if irregular activity is reported by the server or the switch

If you require specific manufacturer’s information about the 3C975 ATMLink NIC

The diagnostic utility reports the product revision number, date of manufacture, SRAM size, EEPROM size, and the MAC address of each installed 3C975 ATMLink NIC.

If you require specific configuration information about the 3C975 ATMLink NIC

The diagnostic utility reports the device number, bus number, slot number, I/O port address, and interrupt request level (IRQ).

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3Com 155 PCI manual When to Use the Diagnostic Utility