Specifications

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Cisco ONS 15454 Troubleshooting and Maintenance Guide
November 2001
Chapter 1 Alarm Troubleshooting
Step 4 Verify that the DCC is provisioned for the ports at both ends of the fiber span.
a. Under the node view, click the Provisioning > SONET DCC tabs.
b. If the slot and port are listed under SDCC Terminations, the DCC is provisioned.
c. If the slot and port are not listed under the SDCC Terminations, click Create.
d. Click the OC-N card that links to the adjacent node.
e. Click OK.
f. Repeat steps (a) – (e) at the adjacent nodes.
Step 5 Verify that the OC-N port is active and in-service:
a. Confirm that the OC-N card shows a green LED by viewing the CTC or viewing the physical card.
A green LED indicates an Active card. A yellow LED indicates a Standby card.
b. To determine whether the OC-N port is in In Service, double-click the card in the CTC to display
the card-level view.
c. Click the Provisioning > Line tabs.
d. Verify that the Status column lists the port as In Service.
e. If the Status column lists the port as Out of Service, click the column and select In Service. Click
Apply.
Step 6 With a test set, check for signal failures on fiber terminations.
Caution Using a test set will disrupt service on the OC-N card. It may be necessary to manually switch
traffic carrying circuits over to a protection path.
Step 7 Measure power levels to verify that the budget loss is within the parameters of the receiver. See the
“Optical Card Transmit and Receive Levels” section on page 2-35.
Step 8 Ensure that fiber connectors are securely fastened and properly terminated.
Step 9 Reset the active TCC+ using the “Card Replacement” section on page 3-14.
Resetting the active TCC+ switches the traffic to the standby TCC+. If the alarm clears when the ONS
15454 switches to the standby TCC+, the user can assume that the original active TCC+ is the cause of
the alarm.
Step 10 Replace the original active TCC+ with a new TCC+ card.
Caution Resetting the active TCC+ results in loss of traffic.
Step 11 Delete and recreate the problematic SDCC termination:
a. Click the Provisioning > SONET DCC tabs.
b. Highlight the problematic SDCC termination.
c. Click Delete.
d. Click Yes at confirmation dialog box.
Step 12 Verify that both ends of the SDCC have been recreated at the optical ports.