Nortel Networks W/WOL, 21 PCI 10/100 manual Chapter Troubleshooting, Diagnostic LEDs

Chapter 5

Troubleshooting

This chapter provides several methods for troubleshooting problems related to the BayStack 21 PCI 10/100 Adapter w/WOL.

Diagnostic LEDs

Three LEDs on the front of the BayStack 21 network card provide diagnostic information. The 10 Mb/s and 100 Mb/s Link LEDs indicate successful network connections to Ethernet and Fast Ethernet devices, respectively. The Link LEDs remain steady if the connection is stable. You should check the RJ-45 connection if the LED is not steady. The Activity LED indicates active network traffic.

Table 5-1 describes the Link and Activity LED indications.

Table 5-1.	LED Indications
Label	Color	Activity	Description
10 LNK	Green	On	A 10 Mb/s connection has been established.
		Off	Power is not supplied to the network card, or a 10 Mb/s
			connection is not established.
100 LNK	Green	On	A 100 Mb/s connection has been established.
		Off	Power is not supplied to the network card, or a 100 Mb/s
			connection is not established.
ACT	Green	On	Heavy network traffic is passing through the port.
		Blinking	Intermittent or light network traffic is passing through the port.
			The rate of blinking is proportional to the amount of network
			traffic.

206379-A 5-1