4-9
LEDs
System status LED
The system status LED shows the operating status of the switch.
Table4-19 System status LED description
LED mark
Status
Description
SYS
Steady green
The switch is operating correctly.
Flashing green
The switch is performing power-on self test (POST).
Steady red
The system has failed to pass POST or has problems such as fan failure.
Flashing blue
(3 Hz)
Helps you to locate the switch.
To locate the switch in the rack, execute the
locator blink
blink-time
command. The LED then flashes blue at 3 Hz.
Off
The switch is powered off or has failed to start up.
QSFP28 port LED
Table4-20 QSFP28 port LED description
LED status
Description
Steady green
A transceiver module or cable has been correctly installed. The port has a link and
is operating at 100 Gbps.
Flashing green
The port is sending or receiving data at 100 Gbps.
Steady yellow
A transceiver module or cable has been correctly installed. The port has a link and
is operating at 10 Gbps, 25 Gbps, or 40 Gbps.
Flashing yellow (3 Hz)
The port is sending or receiving data at 10 Gbps, 25 Gbps, or 40 Gbps.
Off
No transceiver module or cable has been installed or no link is present on the port.
SFP28 port LED
Table4-21 SFP28 port LED description
LED status
Description
Steady green
A transceiver module or cable has been correctly installed. The port has a link and
is operating at 25 Gbps.
Flashing green
The port is sending or receiving data at 25 Gbps.
Steady yellow
A transceiver module or cable has been correctly installed. The port has a link and
is operating at 1/10 Gbps.
Flashing yellow (3 Hz)
The port is sending or receiving data at 1/10 Gbps.
Off
No transceiver module or cable has been installed or no link is present on the port.
