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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter1 General Troubleshooting
1.6.3 Perform a Facility Loopback on an Inte rmediate-Node OC-N Port
Test the Ethernet Card
Step1 Complete the “Physically Replace a Card” procedure on page2-154 for the suspected bad card and
replace it with a known-good one.
Caution Removing a card that currently carries traffic on one or more ports can cause a traffic hit. To avoid this,
perform an external switch if a switch has not already occurred. Refer to the procedures in the
“2.10.1 Protection Switching, Lock Initiation, and Clearing” section on page2-147. For more
information, refer to the “Maintain the Node” chapter in the Cisco ONS 15310-CL and
Cisco ONS 15310-MA Procedure Guide.
Step2 Resend test traffic on the loopback circuit with a known-good card.
Step3 If the test set indicates a good circuit, the problem was probably the defective card. Return the defective
card to Cisco through the RMA process. Contact Cisco Technical Support (1 800 553-2447).
Step4 Complete the “Physically Replace a Card” procedure on page2-154 for the defective card.
Step5 Clear the terminal loopback on the port before testing the next segment of the network circuit path:
a. Double-click the CE100T-8 card with the terminal loopback in the source node.
b. Click the Maintenance > Loopback 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.
Step6 Clear the terminal loopback circuit before testing the next segment of the network circuit path:
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.
Step7 Complete the “1.6.3 Perform a Facility Loopback on an Intermediate-Node OC-N Port” procedure on
page 1-33.
1.6.3 Perform a Facility Loopback on an Intermediate-Node OC-N Port
Performing the facility loopback test on an intermediate node OC-N port (which carries the Ethernet
circuit) isolates whether this node is causing circuit failure. Complete the “Create a Facility Loopback
on an Intermediate-Node OC-N Port” procedure on page1-34.
Note The CE100T-8 Ethernet card only supports point-to-point configurations and is not directly implicated
in the intermediate node testing.