Nortel BayStack 400-S, User Manual, Page: 64 / 86

64 Chapter 6 LEDs: support and diagnostic functions
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Use the LED display to help you identify the type of problem with the seven-port
autosensing switch and then verify that:
• The switch is powered on.
• Each cable and port connection has the correct pin assignment and that no
connectors are loose.
• The Link/Activity LED glows for each port used.
If the Link LED is not on, do the following:
• Verify that the device connected to your switch has a properly functioning
power supply.
• Try using a different port on your switch to connect the device.
• Try using a different port on the device connected to your switch.
Table 12 describes the LEDs that monitor the seven-port switch.
Table 12 Seven-port switch port status LEDs
Type Label Color Activity Meaning
Port Status 10/100 Link/Activity Green Solid Port is connected at 100
Mb/s
Port Status 10/100 Link/Activity Amber Solid Port is connected at 10 Mb/s.
Port Status 10/100 Link/Activity Green Blinking 100 Mb/s activity is occurring
on the port
Port Status 10/100 Link/Activity Amber Blinking 10 Mb/s activity is occurring
on the port
Port Mode FDX Green Solid Port is operating in
full-duplex mode
Port Mode FDX Off Off Port is operating in
half-duplex mode