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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.
24
SAN40B-4
Installation,
Service,
and
User’s
Guide
Summary of Contents for SAN40B-4 - System Storage Switch
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