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LED mark Status Description
Flashing green (1 Hz)
The system is performing power-on self test (POST) or
downloading software.
Flashing green (3 Hz) POST has failed or another fatal error has been detected.
Off The switch has been powered off.
RPS status LED
The 5120-24G-PoE+ SI switch has one RPS status LED on its front panel to show the operating status of the
RPS DC input.
Table 30 RPS status LED description
LED mark Status Description
Steady green The RPS DC input is normal.
RPS
Off The RPS unit is not connected or the RPS DC input is abnormal.
Port mode LED
The 5120-8G-PPoE+ SI, 5120-8G-PoE+ SI, 5120-24G-PPoE+ SI and 5120-24G-PoE+ SI switches have a
port mode LED to indicate the type of information that the network port LEDs (excluding the SFP port LEDs)
are showing. You can use the port LED mode switching button to change the type of displayed port
information.
Table 31 Port mode LED description
LED mark Status Description
Steady green The network port LEDs are showing port rates.
Mode
Flashing green (1 Hz)
The network port LEDs are showing the status of PoE power
supply on the ports.
10/100/1000Base-T Ethernet port LED
The 5120-48G SI switch has one bi-color LED (see Table 32) for each 10/100/1000Base-T Ethernet port,
and all other 5120 SI switches have two LEDs (see Table 33) f
or each 10/100/1000Base-T Ethernet port.
The 5120-8G-PPoE+ SI, 5120-24G-PoE+ SI, 5120-24G-PPoE+ SI, and 5120-24G-PoE+ SI switches also use
a port mode LED to indicate the type of information that the port LEDs are displaying (see Table 34).
Table 32 Ethernet port
LED description (5120-48G SI)
Status Description
Steady green The port is operating at 1000 Mbps.
Fast flashing green The port is sending or receiving data at 1000 Mbps.
Steady yellow The port is operating at 10/100 Mbps.
Fast flashing yellow The port is sending or receiving data at 10/100 Mbps.