IBM SAN40B-4 User Guide - Page 53

Testing, fiber, cable

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B 1 E A IOIOI ! D scale: 1/8" = 1" C 3 AMmoaTuxTniEmtinNugmTtosIcObreeNw5lm:enmgtohrfo1r3r/a6c4k in. C B24_0005 2 Figure 12. Removing an SFP Item A B C D E 4 Description Switch chassis Cable release SFP Bail Cabled Fibre Channel ports Testing a port, SFP, and fiber cable The PortLoopbackTest command is used to verify the functional operation of the switch by sending frames from the port "N" transmitter and looping them back into the same port "N" receiver. The loopback is done at the parallel loopback path. The path exercised in this test does not include the media or the fiber cable. However if data transmission errors indicate that a port, SFP or cable are faulty, you can use this command to determine whether the port is faulty. You can use those results to isolate the problem to either the port or the SFP and cable combination. If a port is faulty, the switch will need to be replaced. If the port is not faulty, the problem is either with the SFP or the cable. Chapter 3. Operating the switch 29

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Item
Description
A
Switch
chassis
B
Cable
release
C
SFP
D
Bail
E
Cabled
Fibre
Channel
ports
Testing
a
port,
SFP,
and
fiber
cable
The
PortLoopbackTest
command
is
used
to
verify
the
functional
operation
of
the
switch
by
sending
frames
from
the
port
"N"
transmitter
and
looping
them
back
into
the
same
port
"N"
receiver.
The
loopback
is
done
at
the
parallel
loopback
path.
The
path
exercised
in
this
test
does
not
include
the
media
or
the
fiber
cable.
However
if
data
transmission
errors
indicate
that
a
port,
SFP
or
cable
are
faulty,
you
can
use
this
command
to
determine
whether
the
port
is
faulty.
You
can
use
those
results
to
isolate
the
problem
to
either
the
port
or
the
SFP
and
cable
combination.
If
a
port
is
faulty,
the
switch
will
need
to
be
replaced.
If
the
port
is
not
faulty,
the
problem
is
either
with
the
SFP
or
the
cable.
scale: 1/8" = 1"
IOIOI
ATTENTION:
Maximum screw length for rack
mounting to be 5mm or 13/64 in.
1
3
4
2
A
D
C
B
E
C
B24_0005
Figure
12.
Removing
an
SFP
Chapter
3.
Operating
the
switch
29