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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter1 General Troubleshooting
1.6.4 Perform a Terminal Loopback on Intermediate-Node OC-N Ports
d. Select OOS,MT from the Admin State column. If this is a multiport card, select the row appropriate
for the desired port.
e. Select Term ina l from the Loopback Type column. If this is a multiport card, select the row
appropriate for the desired port.
f. Click Apply.
g. Click Yes in the confirmation dialog box.
Step6 Complete the “Test and Clear the OC-N Terminal Loopback Circuit” procedure on page1-38.
Test and Clear the OC-N Terminal Loopback Circuit
Step1 If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step2 Examine the test traffic being received by the test set. Look for errors or any other signal information
that the test set is capable of indicating.
Step3 If the test set indicates a good circuit, no further testing is necessary on the loopback circuit. Clear the
terminal loopback from the port:
a. Double-click the intermediate-node 15310-CL-CTX or CTX2500 with the terminal loopback to
display the card view.
b. Click the Maintenance > Optical > Loopback > Port tabs.
c. Select None from the Loopback Type column for the port being tested.
d. Select the appropriate state (IS; OOS,DSBLD; OOS,MT) in the Admin State column for the port
being tested.
e. Click Apply.
f. Click Yes in the confirmation dialog box.
Step4 Clear the terminal loopback circuit:
a. Click the Circuits tab.
b. Choose the loopback circuit being tested.
c. Click Delete.
d. Click Yes in the Delete Circuits dialog box. Do not check any check boxes.
Step5 Complete the “Test the OC-N Card” procedure on page1-38.
Test the OC-N Card
Step1 Complete the “Physically Replace a Card” procedure on page 2-154 for the suspected bad card and
replace it with a known-good one.