3Com Server manual Troubleshooting, LEDs, Color Flashing Steady Off

4 TROUBLESHOOTING

This chapter describes how to use the 3C395 NIC LEDs and diagnostic tests as troubleshooting aids. It also provides tips for troubleshooting.

LEDs

Before the LEDs can be used for troubleshooting, the NIC must be connected to the network (see Chapter 2) and the network driver must be installed (see Chapter 3).

Table 4-1 describes the 3C395 NIC LEDs.

Table 4-13C395 NIC LED Descriptions

	TX
	TX
L	ACT
N	10
K	100

ACT

10LNK

100LNK

LED	Color	Flashing	Steady	Off
ACT	Yellow:	Network traffic	Heavy network	No traffic
	Port traffic for	present	traffic
	10 or 100 Mbps
10 LNK	Green:	Not applicable	Good	No connection
	Link integrity		10BASE-T	between NIC
			connection	and hub
			between NIC
			and hub
100 LNK	Green:	Not applicable	Good	No connection
	Link integrity		100BASE-TX	between NIC
			connection	and hub
			between NIC
			and hub