Cisco 15310-MA Guide de dépannage télécharger pdf (Page 60)

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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, Release 9.0

78-18394-01

Chapter 1 General Troubleshooting

Identify Points of Failure on an OC-N Circuit Path

Test the 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.

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

Step 3 Clear the terminal loopback:

a. Double-click the card with the loopback.

b. Click the Maintenance > Optical > Loopback > Port tabs.

c. Select None from the Loopback Type column for the port being tested.

d. Select the appropriate state (IS,AINS; OOS,DSBLD; or OOS,MT) in the Admin State column for

the port being tested.

e. Click Apply.

f. Click Yes in the confirmation dialog box.

Step 4 Clear the terminal loopback circuit:

a. Click the Circuits tab.

b. Choose the loopback circuit being tested.

c. Click Delete.

d. Click Yes in the Delete Circuits dialog box.

Step 5 If the test set indicates a faulty circuit, the problem might be a faulty controller card (15310-CL-CTX or

CTX2500). Continue with the “1.3.6 Perform a Facility Loopback on a Destination-Node OC-N Port”

procedure on page 1-24.

1.3.6 Perform a Facility Loopback on a Destination-Node OC-N Port

The final facility loopback test is performed on the source OC-N port in the destination node.

Completing a successful facility loopback on this port isolates the OC-N port as a possible failure point.

Caution Performing a loopback on an in-service circuit is service-affecting.

Create the Facility Loopback on a Destination-Node OC-N Port

Step 1 Connect an optical test set to the port you are testing:

a. If you just completed the “1.3.5 Perform a Terminal Loopback on an Intermediate-Node OC-N

Port” procedure on page 1-22, leave the optical test set connected to the OC-N port in the source

node.

b. If you are starting the current procedure without the optical test set connected to the OC-N port, use

appropriate cabling to attach the Tx and Rx terminals of the optical test set to the port you are

testing.

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Cisco 15310-MA Guide de dépannage Page 60