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3com 4210G Manual De Usuario

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1-14 
Status 
Port mode 
LED 
Ethernet port status 
LED 
Description 
Steady green 
PoE power supply is normal. 
Flashing green (1 Hz)
Power consumption of the device connected to the port 
exceeds the upper limit of the power supply consumption of 
the port, or the available power of the switch is not enough 
for power supply of the port. 
Steady yellow 
PoE failure, and power supply failed. 
The devices attached to the port are not powered devices 
(PDs), so the port does not supply power. 
Flashing yellow (3 Hz)
POST failed on the port. 
Flashing 
green (1 
Hz) (PoE 
mode, 
supported 
by PoE 
switches 
only) 
Off 
The port does not provide PoE power. 
Steady green 
The port operates in full-duplex mode; the LED is fast 
flashing when data is being sent and/or received on the port.
Steady yellow 
The port operates in half-duplex mode; the LED is fast 
flashing when data is being sent and/or received on the port.
Flashing yellow (3 Hz)
POST failed on the port. 
Steady 
yellow 
(duplex 
mode) 
Off 
The port is not up. 
 
1000Base-X SFP Port Status LED 
The port mode LED and the SFP port status LED together indicate the SFP port operation status. Refer 
to 
 for details. 
Table 1-13 
SFP port status LEDs description  
Status 
Port mode 
LED 
Ethernet port 
status LED 
Description 
Steady green 
The port operates at a rate of 1000 Mbps; the LED is fast 
flashing when data is being sent and/or received on the port. 
Flashing yellow 
(3 Hz) 
POST failed on the port. 
Steady green 
(rate mode) or 
flashing green 
(1 Hz, PoE 
mode) 
Off 
The port is not up. 
Steady green 
The port operates in full-duplex mode; the LED is fast flashing 
when data is being sent and/or received on the port. 
Flashing yellow 
(3 Hz) 
POST failed on the port. 
Steady yellow 
(duplex mode) 
Off 
The port is not up.