Cisco 15310-MA Instrukcja Naprawy Pobierz pdf (Strona 48)

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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 Electrical Circuit Path

Step 7 Complete the "Test and Clear the DS1 NIU Loopback Circuit" procedure.

Test and Clear the DS1 NIU Loopback Circuit

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

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

that the test set is capable of indicating.

Step 3 If the test set indicates a good circuit, no further testing is necessary on the loopback circuit. Clear the

NIU loopback through the test set or through CTC:

Step 4 Clear NIU loopback from the test set by sending the deactivate loop codes.

Clear NIU loopback through CTC:

a. Double-click the destination node DS1 card with the NIU loopback.

b. Click the Maintenance > DS1 > Loopback tabs:

c. Select None from the Loopback Type column for the port being tested.

d. Select the appropriate state (IS; OOS,DSBLD; OOS,MT) in the Admin State column for the port

being tested.

e. Click Apply.

f. Click Yes in the confirmation dialog box.

Step 5 Clear the NIU loopback circuit:

a. Click the Circuits tab.

b. Choose the NIU loopback circuit being tested.

c. Click Delete.

Note If you delete the NIU loopback circuit without clearing the NIU loopback ( Step 4), you have

to manually clear the NIU loopback through the test set or CTC.

d. Click Yes in the Delete Circuits dialog box.

The entire circuit path has now passed its comprehensive series of loopback tests. This circuit qualifies

to carry live traffic.

Note If the destination port needs to be reused for other purposes, enable the Inhibit FE Backplane Lbk

checkbox.

a. Go to the card view of the destination node:

b. Click the Maintenance > DS1 > Loopback tabs.

c. Enable the Inhibit FE Backplane Lbk checkbox for port being tested.

d. Click Apply.

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Cisco 15310-MA Instrukcja Naprawy Strona 48