IBM SAN40B-4 - System Storage Switch, User & Service Manual

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Port status LED patterns
Each port has one LED port status indicator. Table 6 shows the LED color, status,
and recommended action for these port LEDs.
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.
Slow flashing green
(flashing in
two-second intervals)
Port is online but
segmented because
of a loopback cable
or incompatible
switch connection.
No action is required.
Fast flashing green
(flashing in
half-second intervals)
Port is online and an
internal loopback
diagnostic test is
running.
No action is required.
Flickering green
(steady with random
flashes)
Port is online and
frames are flowing
through the port.
No action is required.
Steady green Port is online
(connected to
external device) but
has no traffic.
No action is required.
Slow flashing amber
(flashing in
two-second intervals)
Port is disabled
(because of
diagnostics or the
portDisable
command).
Verify the diagnostic
tests are not running.
Reenable the port
using the portEnable
command.
Fast flashing amber
(flashing in
half-second intervals)
Port is faulty. Check the
management
interface and the
error log for details
on the cause of
status. Contact IBM
Support if required.
Steady amber (for
more than five
seconds)
Port is receiving light
or signal carrier at 4
Gbps; but is not yet
online.
No action required.
Ethernet LED patterns
Each Ethernet port has two LEDs, which are described in Table 7
Table 7. Ethernet LED patterns
LED name LED color Status of hardware
Recommended
action
Ethernet speed LED
(right)
No light Port speed is 10
Mbps.
No action is required.
Steady green Port speed is 100
Mbps.
No action is required.
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SAN40B-4 Installation, Service, and User’s Guide