Cisco 15310-MA Průvodce řešením problémů stáhnout pdf (Strana 59)

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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

Create the Terminal Loopback on an Intermediate-Node OC-N Port

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

a. If you just completed the “1.3.4 Perform a Facility Loopback on an Intermediate-Node OC-N Port”

procedure on page 1-21, 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 OCN1toOCN4.

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.

e. In the Circuit Source dialog box, fill in the source Node, Slot, Port, and Type where the test set is

connected and click Next.

f. In the Circuit Destination dialog box, fill in the destination Node, Slot, Port, and Type (the OC-N

port in the intermediate node) and click Finish.

Step 3 Confirm that the newly created circuit appears on the Circuits tab list as a two-way circuit.

Note It is normal for a 2.7.166 LPBKTERMINAL (OCN) condition to appear during a loopback

setup. The condition clears when you remove the loopback.

Step 4 Create the terminal loopback on the destination port being tested:

a. Go to the node view of the intermediate node:

• From the View menu, choose Go To Other Node.

• Choose the node from the drop-down list in the Select Node dialog box and click OK.

b. In node view, double-click the controller card (15310-CL-CTX or CTX2500) with the OC-N port

requiring a loopback.

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

d. Select OOS,MT from the Admin State column.

e. Select Termin al from the Loopback Type column.

f. Click Apply.

g. Click Yes in the confirmation dialog box.

Step 5 Continue with the “Test the Terminal Loopback Circuit” procedure on page 1-24.

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Cisco 15310-MA Průvodce řešením problémů Strana 59