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6
TROUBLESHOOTING
This chapter describes how to isolate and solve 3C359 NIC
hardware and network cabling problems.
3C359 NIC LEDs
Light-emitting diodes (LEDs) on the backplate of the
3C359 NIC, shown in Figure 6-1, indicate the configured
ring speed and whether or not the 3C359 NIC is inserted
into the ring. The LEDs also light when drivers are loading
and when the diagnostics program is running.
Figure 6-1 NIC LEDs
When the green LED (labeled “4”) is lit, it indicates that the
3C359 NIC is set to 4 Mbps speed and is correctly inserted
into the token ring network.
When the yellow LED (labeled “16”) is lit, it indicates that
the 3C359 NIC is set to 16 Mbps and is correctly inserted
into the token ring network.
4
16
Data
4 Mbps
16 Mbps
Book Page 1 Saturday, November 1, 1997 3:13 PM