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Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Alarm Procedures
2.7.73 FE-LOS
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SDH 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
Step 1 To troubleshoot the FE condition, determine which node and port link directly to the card or port
reporting the FE condition.
Step 2 Log into the node that links directly to the port reporting the FE condition.
Step 3 Complete the “Clear the LOS (E1) Alarm” procedure on page 2-94.
Step 4 If the condition does not clear, log into the Technical Support Website at
http://www.cisco.com/cisco/web/support/index.html for more information or call Cisco TAC
(1-800-553-2447).
2.7.74 FE-MANWKSWBK-SPAN
The FE-MANWKSWBK-SPAN condition is not used in the ONS 15310 platforms in this release. It is
reserved for development.
2.7.75 FE-MANWKSWPR-SPAN
The FE-MANWKSWPR-SPAN condition is not used in the ONS 15310 platforms in this release. It is
reserved for development.
2.7.76 FEPRLF
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SDH Logical Object: STM
The Far End Protection Line Failure alarm occurs when an APS channel “MS-EXC” condition on
page 2-126 occurs on the protect port coming into the node.
Note The FEPRLF alarm occurs when bidirectional protection is used on optical ports in a 1+1/LMSP
protection group configuration.
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