IBM AA-RWF3A-TE - Manual (Page 72)

4/8 and 4/16 SAN Switch port LED patterns
Each port includes two LEDs: a Port Speed indicator and a Port Status indicator. Table
11 describes the LED locations, colors, and recommended actions.
Table 11 Port LED patterns during normal operation
LED name LED color Hardware status Recommended action
No light No power or signal
carrier (SFP or cable)
detected.
Check SFP and cable.
Steady green Port is online
(connected to external
device) but has no
traffic.
No action required.
Slow flashing
green (1
second on, 1
second off)
Port is online but
segmented, indicating
a loopback cable or
incompatible switch.
Verify that the correct device is connected
to the port and that the switch and port
settings are correct.
Fast-flashing
green (1/4
second on, 1/4
second off)
Port is in internal
loopback (diagnostic).
No action required.
Flickering green Port is online with traffic
flowing through it.
No action required.
Steady amber Port is receiving light or
signal carrier, but is not
yet online.
No action required.
Slow-flashing
amber (1
second on, 1
second off)
Port is disabled as the
result of diagnostics
or portdisable
command.
If all ports are
slow-flashing amber,
the switch may be
disabled.
Enable the port using the portenable
command; see the Fabric OS command
reference guide for more information.
If all ports are slow-flashing amber, enable
the switch (switchenable command).
Fast-flashing
amber (1/4
second on, 1/4
second off)
Port is faulty. Check the Port Status LEDs, error log, SFP,
and cable or loopback plug.
Clear the error log.
Rerun the diagnostics to verify that the error
condition is fixed.
Port Status
Alternating
green and
amber
Port is bypassed. Check configuration of FC loop.
72 Managing SAN Switches