Table 11. SFP-DD port status LED patterns during normal operation
LED color
Status of hardware
Recommended action
No light
Port has no incoming power, or
there is no light or signal carrier
detected.
Verify that the power LED is on,
and check the transceiver and
cable.
Steady green
Port is online (connected to
external device) but has no
traffic.
No action required.
Slow-flashing green (on for 2
seconds; then off for 2 seconds)
Port is online but segmented
because of a loopback cable or
incompatible device connection.
Verify that the correct device is
attached to the switch.
Fast-flashing green (on 1/2
second; then off 1/2 second)
Port is online and an internal
loopback diagnostic test is
running.
No action required.
Flickering green
Port is online and frames are
flowing through the port.
No action required.
Steady amber
Port is receiving light or signal
carrier, but it is not online yet.
No action required.
Slow-flashing amber (on 2
seconds; then off 2 seconds)
Port is disabled because of
diagnostics or the
portDisable
command.
Reset the port.
Fast-flashing amber (on 1/2
second; then off 1/2 second)
SFP-DD or port is faulty.
Reset the port.
Replace the SFP-DD. Must be a
Brocade-branded SFP-DD.
Nonport-side LED locations
The following figure shows the LEDs on the nonport side of the switch.
Chapter 6. Monitoring the device 51
