IBM SAN24B-4 User Manual

Table 6. Port LED patterns during normal operation
LED name LED color Status of hardware
Recommended
action
Port status No light No light 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 is required.
Slow-flashing green
(on 1 second, off 1
second)
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
(on 1/4 second, off
1/4 second)
Port is in internal
loopback (diagnostic).
No action is required.
Flickering green Port is online, with
traffic flowing
through port.
No action is required.
Steady amber Port is receiving light
or signal carrier but
is not yet online.
No action is required.
Slow-flashing amber
(on 1 second, off 1
second)
Port is disabled as
the result of
diagnostics or
portDisable
command. If all ports
are slow-flashing
amber, the switch
could be disabled.
If all ports are
slow-flashing amber,
the switch could be
disabled. Enable the
port using the
portEnable
command; refer to
Fabric OS Command
Reference for more
information.
If all ports are
slow-flashing amber,
enable the switch
(switchEnable
command).
Fast-flashing amber
(on 1/4 second, off
1/4 second)
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.
24 SAN24B-4 Installation, Service, and User Guide

IBM SAN24B-4 Specifications

General

Brand	IBM
Model	SAN24B-4
Category	Switch
Language	English