Create The Facility Loopback On The Source Oc-N Port; Test The Facility Loopback Circuit - Cisco ONS 15310-CL Troubleshooting Manual

1.3.1 Perform a Facility Loopback on a Source-Node OC-N Port

Create the Facility Loopback on the Source OC-N Port

Connect an optical test set to the port you are testing.
Step 1
Use appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are
testing.
Use CTC to create the facility loopback circuit on the port being tested:
Step 2
a.
b.
c.
d.
e.
f.
Continue with the
Step 3

Test the Facility Loopback Circuit

If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 1
Examine the traffic received by the test set. Look for errors or any other signal information that the test
Step 2
set is capable of indicating.
If the test set indicates a good circuit, no further testing is necessary with the facility loopback. Clear the
Step 3
facility loopback:
g.
h.
i.
j.
k.
l.
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
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In node view, double-click the controller card (15310-CL-CTX or CTX2500) to display the card
view.
Click the Maintenance > Optical > Loopback > Port tabs.
Choose OOS,MT from the Admin State column for the port being tested.
Choose Facility from the Loopback Type column for the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
Note It is normal for a 1.7.158 LPBKFACILITY (OCN)
setup. The condition clears when you remove the loopback.
"Test the Facility Loopback Circuit" procedure on page
Click the Maintenance > Optical > Loopback > Port tabs.
Choose None from the Loopback Type column for the port being tested.
Choose the appropriate state (IS,AINS; OOS,DSBLD; or OOS,MT) from the Admin State column
for the port being tested.
Click Apply.
Click Yes in the confirmation dialog box.
Continue with the "1.3.2 Perform a Cross-Connect Loopback on the Source OC-N Port" procedure
on page 1-15.
Chapter 1 General Troubleshooting
condition to appear during loopback
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