Cisco 15310-MA Průvodce řešením problémů stáhnout pdf (Strana 58)

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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

f. Click Apply.

g. Click Yes in the confirmation dialog box.

Note It is normal for a 2.7.162 LPBKFACILITY (OCN) condition to appear during loopback

setup. The condition clears when you remove the loopback.

Step 5 Continue with the “Test the Facility Loopback Circuit” procedure on page 1-22.

Test the Facility Loopback Circuit

Step 1 If the test set is not already sending traffic, send test traffic on the loopback circuit.

Step 2 Examine the traffic received by the test set. Look for errors or any other signal information that the test

set is capable of indicating.

If the test set indicates a good circuit, no further testing is necessary with the facility loopback:

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

“1.3.5 Perform a Terminal Loopback on an Intermediate-Node OC-N Port” procedure on page 1-22.

1.3.5 Perform a Terminal Loopback on an Intermediate-Node OC-N Port

The terminal loopback test is performed on the node destination port in the circuit, in this example, the

destination OC-N port in the intermediate 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 port.

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

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