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Cisco ONS 15327 Troubleshooting Guide, R3.4
April 2003
Chapter1 General Troubleshooting
Identify Points of Failure on a DS-N Circuit Path
Step 3 If the test set indicates a good circuit, no further testing is necessary with the hairpin loopback circuit:
a. Clear the hairpin circuit:
•Click the Circuits tab.
•Choose the hairpin circuit being tested.
•Click the Delete button.
•Click the Yes button in the Delete Circuits dialog box.
•Confirm that the hairpin circuit is deleted from the Circuits tab list.
b. Proceed to the “Perform a Terminal Loopback on a Destination XTC Port” procedure on page 1-11.
Step 4 If the test set indicates a faulty circuit, there might be a problem with the XTC card.
Step 5 Proceed to the “Test the Alternate Source XTC Card” procedure on page1-10.
Procedure: Test the Alternate S ource XTC Card
Step 1 Perform a reset on the active XTC card:
a. Determine the active XTC card. On both the physical node and the Cisco Transport Controller
(CTC) window, the active XTC card has a gr een ACT LED, and the standby XTC card has an amber
SBY LED.
b. Position the cursor over the active cross-connect card.
c. Right-click and choose Reset from the shortcut menu.
d. On the Resetting Card dialog box, click Yes . After 20 to 40 seconds, a “lost node connection,
changing to network view” message is displayed.
e. Click OK. On the network view map, the node where you reset the XTC is gray.
f. After the node icon turns green (within 1 to 2 minutes), dou ble-click it. On the shelf graphic, observe
the following:
•The previous standby XTC displays a green ACT LED.
•The previous active XTC LEDs go through the following LED sequence: NP (card not present),
Ldg (software is loading), amber SBY LED (XTC is in standby mode ).
•The LEDs should complete this sequence within 5 to 10 minutes.
Step 2 Resend test traffic on the loopback circuit. The test-set traffic now travels through the alternate XTC
card.
Step 3 If the test set indicates a faulty circuit, assume that the XTC card is not causing the problem:
a. Clear the hairpin circuit:
•Click the Circuits tab.
•Choose the hairpin circuit being tested.
•Click the Delete button.
•Click the Yes button in the Delete Circuits dialog box.
•Confirm that the hairpin circuit is deleted from the Circuits tab list.
b. Proceed to the “Perform a Terminal Loopback on a Destination XTC Port” procedure on page 1-11.