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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter 2 Alarm Troubleshooting
2.7.57 EOC-L
Note If ports managed into IS administrative state are not receiving signals, the LOS alarm is
either raised or remains, and the port service state transitions to OOS-AU,FLT.
Step 7 For all nodes, if the card is in service, use an optical test set to determine whether signal failures are
present on fiber terminations. For specific procedures to use the test set equipment, consult the
manufacturer.
Caution Using an optical test set disrupts service on the OC-N port. It could be necessary to manually switch
traffic carrying circuits over a protection path. See the “2.10.1 Protection Switching, Lock Initiation,
and Clearing” section on page 2-147 for commonly used switching procedures.
Step 8 If no signal failures exist on terminations, measure power levels to verify that the loss is within the
parameters of the receiver. Refer to the Cisco ONS 15310-CL and Cisco ONS 15310-MA Reference
Manual for card power levels.
Step 9 If loss is within parameters, ensure that fiber connectors are securely fastened and properly terminated.
Step 10 If fiber connectors are properly fastened and terminated, complete the “Soft- or Hard-Reset a Controller
Card” procedure on page 2-153.
Caution Avoid soft-resetting multiple ONS 15310-MA cards at one time; doing so might cause an unexpected
traffic hit.
Wait ten minutes to verify that the card you reset completely reboots.
Step 11 If the controller card reset does not clear the alarm, delete the problematic SDCC termination by
completing the following steps:
a. From card view, click View > Go to Previous View if you have not already done so.
b. Click the Provisioning > Comm Channels > SDCC tabs.
c. Highlight the problematic DCC termination.
d. Click Delete.
e. Click Yes in the Confirmation Dialog box.
Step 12 Recreate the SDCC termination. Refer to the “Turn Up Network” chapter in the Cisco ONS 15310-CL
and Cisco ONS 15310-MA Procedure Guide for procedures.
Step 13 Verify that both ends of the DCC have been recreated at the optical ports.
Step 14 If the alarm has not cleared, call Cisco TAC (1-800-553-2447).
2.7.57 EOC-L
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Object: OCN
The Line DCC (LDCC) Termination Failure alarm occurs when the ONS 15310-CL or ONS 15310-MA
loses its LDCC termination. The LDCC consists of nine bytes, D4 through D12, that convey information
about OAM&P and network management information in the SONET overhead.