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Cisco ONS 15454 SDH Troubleshooting Guide, R5.0
July 2005
Chapter 1 General Troubleshooting
1.2.2 Perform a Hairpin Test on a Source-Node Electrical Port (West to East)
l. If the VC Optimization dialog box is displayed, leave all defaults.
m. Click Finish.
Step 4 Confirm that the newly created circuit appears on the Circuits tab and that the Dir column describes it
as a one-way circuit.
Step 5 Complete the “Test and Delete the Electrical Port Hairpin Circuit” procedure on page 1-15.
Test and Delete the Electrical Port Hairpin 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 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 with the hairpin circuit. Clear the
hairpin circuit:
a. Click the Circuits tab.
b. Choose the hairpin circuit being tested.
c. Click Delete.
d. Click Yes in the Delete Circuits dialog box. Do not check any check boxes.
e. Confirm that the hairpin circuit is deleted form the Circuits tab list.
Step 4 Complete the “Test the Standby XC-VXL Cross-Connect Card” procedure on page 1-15.
Test the Standby XC-VXL Cross-Connect Card
Note Two XC-VXL cross-connect cards (active and standby) must be in use on a node to use this procedure.
Step 1 Perform a reset on the standby cross-connect card to make it the active card:
a. Determine the standby cross-connect card. On both the physical node and the CTC node view
window, the standby cross connect ACT/STBY LED is amber and the active card ACT/STBY LED
is green.
b. Position the cursor over the standby cross-connect card.
c. Right-click and choose RESET CARD.
d. Click Yes in the confirmation dialog box.