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Cisco ONS 15454 Troubleshooting Guide, R8.5
November 2009
Chapter 2 Alarm Troubleshooting
2.7.365 SF (TRUNK)
Warning
Use of controls, adjustments, or performing procedures other than those specified could result in
hazardous radiation exposure.
Statement 1057
Clear the SF (E1) Condition
Step 1 Complete the “Clear the SD (E1) Condition” procedure on page 2-219.
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15454.
Plug the wristband cable into the ESD jack located on the lower-right edge of the shelf assembly.
Step 2 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.
2.7.365 SF (TRUNK)
For information about this alarm or condition, refer to the “Alarm Troubleshooting” chapter in the
Cisco ONS 15454 DWDM Troubleshooting Guide. This guide discusses all DWDM alarms.
2.7.366 SF-L
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: EC1, OCN
An SF Line condition is similar to the “SF (DS1, DS3)” condition on page 2-222, but it applies to the
line layer B2 overhead byte of the SONET signal. It can trigger a protection switch.
The SF-L condition clears when the BER level falls to one-tenth of the threshold level that triggered the
condition. A BER increase is sometimes caused by a physical fiber problem, including a poor fiber
connection, a bend in the fiber that exceeds the permitted bend radius, or a bad fiber splice.
The condition is superseded by higher-priority alarms such as the “LOF (EC1)” alarm on page 2-150,
the “LOS (EC1)” alarm on page 2-162, and the “LOS (OCN)” alarm on page 2-164.
Clear the SF-L Condition
Step 1 Complete the “Clear the SD (DS1, DS3) Condition” procedure on page 2-218.
Step 2 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.
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