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Chapter 4: Repair information
b. Select
Reset Port
. A message box displays, indicating a link
reset will occur.
c. Click
OK
. The port resets.
10. Notify the customer the test is complete and the attached device
can be set online.
External loopback
test
An external loopback test checks all port circuitry, including
fiber-optic components of the installed optical transceiver. To perform
the test, the attached device must be quiesced and disconnected from
the port, and a singlemode or multimode loopback plug must be
inserted in the port. To perform the test:
1. Notify the customer that a disruptive external loopback test is to
be performed and the attached device must be disconnected.
2. Disconnect the fiber-optic jumper cable from the port to be tested.
3. Depending on the port technology, insert a singlemode or
multimode loopback plug into the port receptacle.
4. At the Element Manager application (management server), select
Port Diagnostics
from the
Maintenance
menu. The
Port Diagnostics
dialog box displays (
Figure 59
).
5. Type the port number to be tested or select all ports at the
Port
Select
area of the dialog box.
6. At the
Diagnostics Test
list box, select the
External Loop
option.
7. Click
Next
. At the
Port Diagnostics
dialog box, the message
Loopback plug(s) must be installed on ports being diagnosed
appears.
8. Verify a loopback plug is installed and click
Next
. The message
Press START TEST to begin diagnostics
appears, and the
Next
button changes to a
Start Test
button.
9. Click
Start Test
. The test begins and:
a. The
Start Test
button changes to a
Stop Test
button.
b. The message
Port xx: TEST RUNNING
appears.
c. A red progress bar (indicating percent completion) travels
from left to right across the
Completion Status
field.
10. When the test completes, results appear as
Port xx: Passed!
or
Port xx: Failed!
in the message area of the dialog box.
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