3Com TokenLink VelocityTM XL PCI Network Interface Card manual Troubleshooting, 3C359 NIC LEDs

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.

4Mbps

16Mbps

4 16

Data

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.