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Mellanox Technologies
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Bad Port LED Assignments
LED Behavior
Description
Action Required
Off
No symbol errors have been received in last few
seconds (normal condition).
N/A
Flashing Amber
Error, one or more ports have received symbol
errors.
Possible causes are:
• Bad cable
• Bad connection
• Bad connector
Check symbol error counters on the system
UI to identify the ports.
Replace the cable on these ports.
4.8.6 Port LEDs
SN2740 Port LEDs
SN2410 SFP28 Port LEDs
SN2410 QSFP28 Port LEDs
SN2010 QSFP Port LEDs
SN2010 SFP Port LEDs
SN2100 Port LEDs
In the SN2410 systems, the status of each pair of adjacent QSFP28 ports is indicated by four LEDs, as shown in the picture above:
While the bottom LEDs signify the port status in regular condition, the upper LEDs operate only when the port is split.
When one port is split to two, a connection of 100GbE can be utilized in its adjacent port.
When one port is split to four, it adjacent port is canceled.
If the ports run at a 100GbE/40GbE speed each, the two lower LEDs (2 and 4) will light green.
If the ports run at a 50GbE speed each, the left LEDs (1 and 2) will light green for the upper port, and the right LEDs (3 and 4)
will light green for the lower port.
If the ports run at a 25GbE/10GbE speed each, all LEDs may light green, according to the selected lane.
Port LEDs in Ethernet System Mode
LED Behavior
Description
Action Required
Off
Link is down.
Check the cable
Solid Green
Link is up with no traffic.
N/A
