Cisco ONS 15454 - Test the Optical Card; 1.4.5 Perform a Terminal Loopback on Intermediate-Node Optical Ports

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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 1 General Troubleshooting
1.4.5 Perform a Terminal Loopback on Intermediate-Node Optical Ports
e. Click Yes in the confirmation dialog box.
Step 4 Clear the facility 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.
Step 5 Complete the “Test the Optical Card” procedure on page 1-59.
Test the Optical Card
Step 1 Complete the “Physically Replace a Traffic Card” procedure on page 2-273 for the suspected bad card
and replace it with a known-good one.
Step 2 Resend test traffic on the loopback circuit with a known-good card installed.
Step 3 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 at 1 800 553-2447.
Step 4 Complete the “Physically Replace a Traffic Card” procedure on page 2-273 for the faulty card.
Step 5 Clear the facility loopback from the port:
a. Click the Maintenance > Loopback > Port tabs.
b. Choose None from the Loopback Type column for the port being tested.
c. Choose the appropriate state (IS; OOS,DSBLD; OOS,MT; IS,AINS) from the Admin State column
for the port being tested.
d. Click Apply.
e. Click Yes in the confirmation dialog box.
Step 6 Clear the facility 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.
Step 7 Complete the “1.4.5 Perform a Terminal Loopback on Intermediate-Node Optical Ports” procedure on
page 1-59.
1.4.5 Perform a Terminal Loopback on Intermediate-Node Optical Ports
In the next troubleshooting test, you perform a terminal loopback on the intermediate-node port to isolate
whether the destination port is causing circuit trouble. In the example situation in Figure 1-26, the
terminal loopback is performed on an intermediate optical port in the circuit. You first create a