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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter2 Alarm Troubleshooting
2.7.85 FE-LOF
2.7.85 FE-LOF
Default Severity: NotAlarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: DS3
The Far End LOF condition occurs when a far-end node reports the “LOF (DS3)” alarm on page2-87 in
C-bit line type mode.

Clear the FE-LOF Condition

Step1 To troubleshoot an FE condition, determine which node and port link directly to the card reporting the
FE condition.
Step2 Log into the node that links directly to the port reporting the FE condition.
Step3 Complete the “Clear the LOF (DS1) Alarm” procedure on page2-86. It also applies to FE-LOF.
Step4 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call CiscoTAC (1-800-553-2447).
2.7.86 FE-LOS
Default Severity: NotAlarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: DS3
The Far End LOS condition occurs in C-bit line type mode when a far-end node reports the “LOS (DS3)”
alarm on page 2-95.

Clear the FE-LOS Condition

Step1 To troubleshoot the FE condition, determine which node and port link directly to the card or port
reporting the FE condition.
Step2 Log into the node that links directly to the port reporting the FE condition.
Step3 Complete the “Clear the LOS (DS1) Alarm” procedure on page2-94.
Step4 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call CiscoTAC (1-800-553-2447).
2.7.87 FE-MANWKSWBK-SPAN
The FE-MANWKSWBK-SPAN condition is not used in the ONS15310 platforms in this release. It is
reserved for development.