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Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
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Chapter 1 Alarm Troubleshooting
1.7.203 SF-L
Warning
Use of controls, adjustments, or performing procedures other than those specified could result in
hazardous radiation exposure.
Statement 1057
Clear the SF (DS1, DS3) Condition
Step 1
Complete the
“Clear the SD (DS1, DS3) Condition” procedure on page 1-124
.
Caution
Always use the supplied electrostatic discharge wristband when working with a powered ONS 15310-CL
or ONS 15310-MA.
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).
1.7.203 SF-L
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: EC1, OCN
An SF Line condition 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The condition is superseded by higher-priority alarms such as
1.7.135 LOF (OCN)
or
1.7.150 LOS
(OCN)
.
Clear the SF-L Condition
Step 1
Complete the
“Clear the SD-L Condition” procedure on page 1-125
.
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).
1.7.204 SF-P
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: STSMON, STSTRM
An SF Path condition is similar to an
“SF-L” condition on page 1-127
, but it applies to the path (STS)
layer B3 byte of the SONET overhead. It can trigger a protection switch.
The SF-P 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.
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