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28 Quick Start Guide
• One switch status LED in the center of the power supply side to indicate
whether the switch is on and has successfully booted, and whether any
of the ports are faulty.
LEDs on the SFP Media Side
Figure 12 shows the SFP media side of the FC 16B with the LEDs
identified.
Figure 12. The SFP Media Side of the FC 16B
The following table describes the LEDs above each port on the left. These
LEDs indicate the status of the port.
Switch Power LED
Serial Port
Port Status LED (16x)
Optical Port (16x)
Port Speed LED (16x)
Ethernet Port
Color of LED Status of Hardware Recommended Action
No light No light or signal carrier
(media or cable) is detected.
Check media and
cable.
Steady green Port is online (connected to an
external device) but has no
traffic.
No action required.
Slow-flashing
green (on 1
second; off 1
second)
The port is online but
segmented, indicating a
loopback cable or incompatible
switch.
Verify correct device
is connected to port.