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B
1
E
2
Figure 12. Removing an SFP
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.
A
scale: 1/8" = 1"
IO
IO
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C
Item
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B
C
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E
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C
3
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4
Description
Switch chassis
Cable release
SFP
Bail
Cabled Fibre Channel ports
Chapter 3. Operating the switch
29
- Quick Links:
- Managing the Switch
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