Figure 37: SFP+ Port LEDs
Network Module Link Status
Color
Link is off.
Off
Link is on; no activity.
Green
Activity on a link; no faults.
The LED will blink green even when there is very little control traffic.
Note
Blinking green
Link is off due to a fault or because it has exceeded a limit set in the switch software.
Link faults occur when non-compliant cabling is connected to an SFP/SFP+
port. Use only standard-compliant cabling to connect to Cisco SFP/SFP+ ports.
You must remove from the network any cable or device that causes a link fault.
Caution
Blinking amber
Link for the SFP/SFP+/SFP28/QSFP+ has been disabled.
Amber
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Switch LEDs
Switch LEDs