Cisco 15310-MA Guida alla Risoluzione dei Problemi Scaricare il pdf (Pagina 62)

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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

Step 3 Clear the facility loopback:

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

b. Choose None from the Loopback Type column for the port being tested.

c. Choose the appropriate state (IS,AINS; OOS,DSBLD; or OOS,MT) from the Admin State column

for the port being tested.

d. Click Apply.

e. Click Yes in the confirmation dialog box.

Step 4 Clear the facility 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 OC-N port. Continue with the

“1.3.7 Perform a Terminal Loopback on a Destination-Node OC-N Port” procedure on page 1-26.

1.3.7 Perform a Terminal Loopback on a Destination-Node OC-N Port

The terminal loopback test is performed on the destination OC-N port in the destination node. First,

create a bidirectional circuit that starts on the node source OC-N port and loops back on the node

destination OC-N port. Then continue with the terminal loopback test. Completing a successful terminal

loopback to a node destination OC-N port verifies that the circuit is good up to the destination OC-N.

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

Create the Terminal 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 “1.3.6 Perform a Facility Loopback on a Destination-Node OC-N Port”

procedure on page 1-24, 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.

c. Adjust the test set accordingly.

Step 2 Use CTC to set up the terminal loopback circuit on the port being tested:

a. Click the Circuits tab and click Create.

b. Give the circuit an easily identifiable name, such as OCN1toOCN6.

c. Set circuit Type and Size to the normal preferences, such as STS and STS1.

d. Leave the Bidirectional check box checked and click Next.

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Cisco 15310-MA Guida alla Risoluzione dei Problemi Pagina 62