61
Table 13
System status LED description
LED mark
Status
Description
SYS
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.
Power module status LED
A power module status LED shows how the hot swappable power module in a slot is operating.
Table 14
Power module status LED description
LED mark
Status
Description
PWR1/PWR2
Steady green
A power module is installed in the power module slot, and the
power output is normal.
Steady yellow
A power module is installed in the power module slot, but the
power module has a problem or no power is being input.
Off
No power module is installed in the power module slot.
Port mode LED
The port mode LED indicates the type of information that the network port LEDs are showing. You can use
the port LED mode switching button to change the type of displayed port information.
Table 15
Port mode LED description
LED mark
Status
Description
MODE/Mode
Steady green
The network port LEDs are showing port rates.
Steady yellow
The network 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 16
Seven-segment LED description
System status LED
(SYS) status
Seven-segment LED (Unit) status
Description
Flashing green
The LED displays numbers one by one.
POST is running, and the LED displays
the ongoing test item ID.
