Cisco 15310-MA Guida alla Risoluzione dei Problemi Scaricare il pdf (Pagina 54)

1-18

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

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

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

for the port being tested.

j. Click Apply.

k. Click Yes in the confirmation dialog box.

l. Continue with the “1.3.2 Perform a Cross-Connect Loopback on the Source OC-N Port” procedure

on page 1-18.

1.3.2 Perform a Cross-Connect Loopback on the Source OC-N Port

The cross-connect loopback test occurs on the cross-connect portion of the controller card

(15310-CL-CTX or CTX2500 card) in a network circuit. Completing a successful cross-connect

loopback through the card isolates the possibility that the cross-connect is the cause of the faulty circuit.

Create the Cross-Connect Loopback on the Source OC-N Port

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

a. If you just completed the “1.3.1 Perform a Facility Loopback on a Source-Node OC-N Port”

procedure on page 1-17, 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 put the circuit being tested out of service:

a. In node view, click the Circuits tab.

b. Click the circuit and then click Edit.

c. In the Edit Circuit dialog box, click the State tab.

d. Choose OOS-MT from the Target Circuit Admin State drop-down list.

e. Click Apply.

f. Click Yes in the confirmation dialog box.

Step 3 Use CTC to set up the cross-connect loopback on the circuit being tested:

a. In node view, double-click the 15310-CL-CTX or CTX2500 to open the card view.

b. For the OC-N port, click the Maintenance > Optical > Loopback > SONET STS tabs.

c. Click the check box in the XC Loopback column for the port being tested.

d. Click Apply.

e. Click Yes in the confirmation dialog box.

Step 4 Continue with the “Test the Cross-Connect Loopback Circuit” procedure on page 1-19.

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Cisco 15310-MA Guida alla Risoluzione dei Problemi Pagina 54