Cisco 15310-MA Guia de Resolução de Problemas descarregar pdf (Página 78)

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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

Troubleshooting Ethernet Circuit Paths With Loopbacks

Step 6 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. Do not check any check boxes.

Step 7 Complete the “1.6.5 Perform a Terminal Loopback on Intermediate-Node OC-N Ports” procedure on

page 1-42.

1.6.5 Perform a Terminal Loopback on Intermediate-Node OC-N Ports

In the next troubleshooting test, you perform a terminal loopback on the intermediate-node port to isolate

whether the destination port is causing circuit trouble. To do this, you create a bidirectional circuit that

originates on the source-node Ethernet port and loops back on the intermediate-node port. You then

proceed with the terminal loopback test. If you successfully complete a terminal loopback on the node,

this node is excluded from possible sources of circuit trouble.

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

Note Terminal loopbacks require on-site personnel.

Complete the “Create a Terminal Loopback on Intermediate-Node OC-N Ports” procedure on page 1-42.

Create a Terminal Loopback on Intermediate-Node OC-N Ports

Step 1 Connect a test set to the 15310-CL-CTX or CTX2500 card port you are testing:

Note For specific procedures to connect, set up, and use the test set equipment, consult the

manufacturer.

a. If you just completed the “1.6.4 Perform a Facility Loopback on an Intermediate-Node OC-N Port”

procedure on page 1-39 for the Ethernet circuit, leave the test set hooked up to the intermediate-node

port.

b. If you are starting the current procedure without the test set hooked up to the source port, use

appropriate cabling to attach the Tx and Rx terminals of the test set to the port you are testing. Both

Tx and Rx connect to the same port.

Step 2 Adjust the test set accordingly. (Refer to manufacturer instructions for test-set use.)

Step 3 Use CTC to set up the terminal loopback on the test port:

a. In node view, click the Circuits tab and click Create.

b. In the Circuit Creation dialog box, choose the type, such as STS, and number, such as 1.

c. Click Next.

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