HP Embedded Firewall manual 3CR990B-FX-97 NIC, Viewing the NIC LEDs in the Diagnostics Program

12Troubleshooting the NIC

3CR990B-FX-97 NIC

LED	State	Meaning
100 LNK	Green	If drivers are installed, the 100BASE-FX connection is
		active; there is a good connection between the NIC and
		the hub or switch.
	Blinking	N/A
	Off	Something is preventing the connection between the
		NIC and the hub or switch.
ACT LNK	Yellow	Heavy network traffic is present.
	Blinking	Network traffic is present.
	Off	No network traffic is present.

Viewing the NIC LEDs in the Diagnostics Program

To view the LEDs in the 3Com NIC Diagnostics program:

1Make sure that the NIC, the network driver, and the 3Com NIC Diagnostics program are installed.

NOTE: For instructions on using the 3Com NIC Diagnostics program, see “Using the 3Com NIC Diagnostics Program” on page 47.

2Open the Windows Start menu.

3Select Programs, and then 3Com NIC Utilities.

4Click 3Com NIC Doctor.

The 3Com NIC Diagnostics General screen appears and displays following LEDs:

•Link — lights if there is a valid connection between the NIC and the network.

•Transmit — lights if the NIC is transmitting information.

•Receive — lights if the NIC is receiving information.

Troubleshooting Problems with the LEDs

If a Link LED indicates a problem, check the following to ensure that:

1Your network hub or switch and the cable connecting to your NIC comply with the specifications appropriate for your network connection.

2The hub or switch is powered on.

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