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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter 2 Alarm Troubleshooting
2.7.77 FE-DS1-SNGLLOS
2.7.77 FE-DS1-SNGLLOS
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: DS3
The Far-End Single DS-1 LOS condition occurs when a single DS-1 signal is lost on a far-end
15310-CL-CTX, ONS 15310-MA DS1-28/DS3-EC1-3, or ONS 15310-MA DS1-84/DS3-EC1-3 DS-1
port (within a DS3). Signal loss also causes the “LOS (OCN)” alarm on page 2-98.
Clear the FE-DS1-SNGLLOS Condition
Step 1 To troubleshoot an FE condition, determine which node and card link directly to the card reporting the
FE condition.
Step 2 Log into the node that links directly to the port reporting the FE condition.
Step 3 Clear the main alarm. Refer to the appropriate alarm section in this chapter for troubleshooting
instructions.
Step 4 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC (1 800 553-2447).
2.7.78 FE-DS3-NSA
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Object: DS3
The Far End DS-3 Equipment Failure Non-Service-Affecting (SA) condition occurs when a far-end
15310-CL-CTX, ONS 15310-MA DS1-28/DS3-EC1-3, or ONS 15310-MA DS1-84/DS3-EC1-3 DS-1
port equipment failure occurs in C-bit line type mode, but does not affect service because the port is
protected and traffic is able to switch to the protect port.
The prefix FE means the main alarm is occurring at the far-end node and not at the node reporting
FE-DS3-NSA alarm. Troubleshoot the FE condition by troubleshooting the main alarm at its source. The
secondary alarms or conditions clear when the main alarm clears.
Clear the FE-DS3-NSA Condition
Step 1 To troubleshoot an FE condition, determine which node and port link directly to the card reporting the
FE alarm.
Step 2 Log into the node that links directly to the port reporting the FE condition.
Step 3 Clear the main alarm. Refer to the appropriate alarm section in this chapter for troubleshooting
instructions.
Step 4 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call Cisco TAC (1-800-553-2447).