Table 14 System status LED description 
LED Status  Descri
PWR 
Steady green  The switch is operating properly.
 
Flashing green (1 
Hz) 
The switch is performing power-on self test (POST). 
Steady red  POST has failed. 
Flashing yellow (1 
Hz)
 
Some ports have failed to pass POST. 
Off  The switch is powered off.
 
 
DC power LED 
 
  NOTE: 
This LED is not available on the 3600-24 v2 SI Switch and 3600-48 v2 SI Switch switches.  
 
The DC power LED shows the DC power and AC power supplying status.  
Table 15 DC power LED description 
LED Status   Descri
RPS 
Steady green  Both DC power input and AC power input are normal.  
Steady yellow 
DC power input is normal but AC power input is experiencing a 
problem or disconnected from the power source.  
Off  The DC input is not connected.  
 
Port mode LED 
The port mode LED indicates the type of information that the port LEDs are showing.  
You can use the port LED mode switching button to change the type of displayed port information.  
Table 16 Port mode LED description 
LED Status  Descri
Mode 
Steady green  The port LEDs are showing port rates.
 
Flashing green (1 Hz) (available only 
for PoE switches)
 
The port LEDs are showing the status of PoE 
power supply on the ports.
 
Steady yellow
 
The port LEDs are showing duplex modes.
 
 
Seven-segment LED 
The seven-segment LED, together with the system status LED, shows detailed system operating information 
(see Table 17). 
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