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External loopback
test
164
SAN32M-2 Installation and Service Manual
c. Click OK. The port resets.
8. Notify the customer the test is complete and the attached device
can be set online.
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 EFCM Basic Edition interface, select Ports and Diagnostics
from the Maintenance menu at any view. The Diagnostics View
displays
(Figure
49).
5. Type the port number to be tested in the Targeted Port Number
field.
6. At the Diagnostic Test list box, select the External Loopback option.
7. Click Start. The test begins and:
a. The Diagnostics View changes to a Diagnostics -Executing View.
b. The message Diagnostics Time Remaining: xx appears,
where xx are the seconds remaining in the test. The test takes
approximately 30 seconds.
NOTE: Click Stop at any time to abort the loopback test.
8. When the test completes, the Diagnostics - Executing View reverts
to the Diagnostics View. Test results appear as Passed, Failed, or
Test Incomplete in the message area of the view.
9. Remove the loopback plug and reconnect the fiber-optic jumper
cable from the device to the port (disconnected in
10. Reset the tested port:
a. Select Ports and Reset from the Maintenance menu at any view.
The Reset View displays.
step
2).
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