38
LED Status Description
Steady red POST has failed.
Flashing yellow (1
Hz)
Some ports have failed to pass POST.
Off The switch is powered off.
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 12 Port mode LED description
LED Status Description
Steady green The port LEDs are showing port rates.
Mode
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 Seven-segment LED description (I)).
Table 13 Seven-segment LED description (I)
Status
LED
System status
LED (SYS)
Seven-segment (Unit) LED
Description
Flashing green
The LED displays numbers one by
one.
POST is running, and the LED
displays the ongoing test item ID.
Flashing red
The LED displays flashing numbers.
POST has failed, and the LED
flashes the ID of the failed test item.
Flashing green
A bar rotates clockwise around the
LED.
Software is loading.
Steady red
The LED displays a flashing F
character.
The switch is experiencing a fan
failure.
Unit
Steady red
The LED displays a flashing t
character.
The switch is in an over-temperature
condition.
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