Cisco ONS 15454 - Test and Clear the FC_MR Port Terminal Loopback Circuit; Test the FC

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Cisco ONS 15454 Troubleshooting Guide, R8.5

November 2009

Chapter 1 General Troubleshooting

1.6.2 Perform a Terminal Loopback on a Source-Node FC_MR Port

Test and Clear the FC_MR Port Terminal Loopback Circuit

Step 1 If the test set is not already sending traffic, send test traffic on the loopback circuit.

Step 2 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.

Step 3 If the test set indicates a good circuit, no further testing is necessary on the loopback circuit. Clear the

terminal loopback state on the port:

a. Double-click the card in the source node with the terminal loopback.

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; IS,AINS) in the Admin State column for

the port being tested.

e. Click Apply.

f. Click Yes in the confirmation dialog box.

Step 4 Complete the “Test the FC_MR Card” procedure on page 1-98.

Test the FC_MR 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.

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 defective card.

Step 5 Clear the terminal loopback on the port before testing the next segment of the network circuit path: