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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 1 General Troubleshooting
1.6.4 Create a Terminal Loopback on Intermediate-Node FC_MR Ports
c. Click the Maintenance > Loopback tabs.
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 Terminal 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.
Step 4 Complete the “Test and Clear the FC_MR Terminal Loopback Circuit” procedure on page 1-102.
Test and Clear the FC_MR 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 from the port:
a. Double-click the intermediate-node card with the terminal loopback to open the card view.
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 1-102.
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:
a. Double-click the source-node card with the terminal loopback.
b. Click the Maintenance > Loopback tabs.
c. Select None from the Loopback Type column for the port being tested.