Cisco Systems ONS 15327 - page 63

1-37
Cisco ONS 15327 Troubleshooting Guide, R3.4
April 2003
Chapter1 General Troubleshoo ting Identify Points of Failure on an OC-N Circuit Path
g. Click the Yes button in the Confirmation Dialog box.
Note It is normal for a LPBKFACILITY condition to appear during loopback setup. The condition
clears when you remove the loopback.
Step 5 Proceed to the “Test the Facility Loopback Circuit” procedure on page 1-31.
Procedure: Test the Facility Loopback Circuit
Step 1 If the test set is not already sending traffic, send test traffic on the loopback circuit.
Step 2 Examine the 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 facility loopback:
a. Clear the facility loopback:
•Click the Maintenance > Loopback tabs.
•Choose None from the Loopback Type column for the port being tested.
•Choose the appropriate state (IS, OOS, or OOS_AINS) from t he State column f or the port b eing
tested.
•Click the Apply button.
•Click the Yes button in the confirmation dialo g box.
b. Clear the facility loopback circuit:
•Click the Circuits tab.
•Choose the loopback circuit being tested.
•Click the Delete button.
•Click the Yes button in the Delete Circuits dialog box.
c. Proceed to the “1.3.7 Pe rf orm a Terminal Loopback on a Dest ina tion N od e OC- N Por t” se ctio n on
page 1-38.
Step 4 If the test set indicates a faulty circuit, the problem might be a faulty OC-N card.
Step 5 Proceed to the “Test the OC-N Card” procedure on page 1-37.
Procedure: Test the OC-N Card
Step 1 Replace the suspect card with a card known to be good. See the “Physically Replace a Card” procedure
on page 2-130 for details.
Step 2 Resend test traffic on the loopback circuit with a good card installed.
Step 3 If the test set indicates a good circuit, the problem is probably the defective card:
a. Return the defective card to Cisco through the returned materials authorization (RMA) process.
Contact the Cisco TAC.