Cisco 15310-MA Guide de dépannage télécharger pdf (Page 69)

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

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Chapter 1 General Troubleshooting

Troubleshooting Ethernet Circuit Paths With Loopbacks

Caution Removing a card that currently carries traffic on one or more ports can cause a traffic hit. To avoid this,

perform an external switch if a switch has not already occurred. Refer to the procedures in the

“2.10.1 Protection Switching, Lock Initiation, and Clearing” section on page 2-156. For more

information, refer to the “Maintain the Node” chapter in the Cisco ONS 15310-CL and

Cisco ONS 15310-MA Procedure Guide.

Step 2 Resend test traffic on the loopback circuit with a known-good card installed.

Step 3 If the test set indicates a good circuit, the problem was probably the defective card. Return the defective

card to Cisco through the Return Materials Authorization (RMA) process. Contact Cisco Technical

Support (1-800-553-2447).

Step 4 Complete the “Physically Replace a Card” procedure on page 2-163 for the faulty card.

Step 5 Clear the facility loopback:

a. Double-click the CE100T-8 card, then click the Maintenance > Loopback tabs.

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

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

being tested.

d. Click Apply.

e. Click Yes in the confirmation dialog box.

Step 6 Complete the “1.6.2 Perform a Terminal Loopback on a Source-Node Ethernet Port” procedure on

page 1-33.

1.6.2 Perform a Terminal Loopback on a Source-Node Ethernet Port

The terminal loopback test is performed on the node source Ethernet port. To do this, you create a

bidirectional circuit that starts on the node destination CE100T-8 port and loops back on node source

CE100T-8 port. You then proceed with the terminal loopback test. Completing a successful terminal

loopback to a node source port verifies that the circuit is good to the source port.

Note Terminal loopbacks require on-site personnel.

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

Complete the “Create the Terminal Loopback on a Source-Node Ethernet Port” procedure on page 1-33.

Create the Terminal Loopback on a Source-Node Ethernet Port

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

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Cisco 15310-MA Guide de dépannage Page 69