Filter
Top Products
2-122
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter 2 Alarm Troubleshooting
2.7.198 SD
SONET Logical Object: EQPT
The Run Configuration Save Needed condition occurs when you change the running configuration file
for ML-100T-8 card. It is a reminder that you must save the change to the startup configuration file for
it to be permanent.
The condition clears after you save the running configuration to the startup configuration, such as by
entering the following command at the CLI:
copy run start
at the privileged EXEC mode of the Cisco IOS CLI. If you do not save the change, the change is lost
after the card reboots. If the command “copy run start” is executed in configuration mode and not
privileged EXEC mode, the running configuration will be saved, but the alarm will not clear.
2.7.198 SD
Default Severity: Not Alarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: DS1, DS3
A Signal Degrade condition for a DS-1 or DS-3 signal on a 15310-CL-CTX, DS1-28/DS3-EC1-3, or
DS1-84/DS3-EC1-3 card occurs when the quality of an electrical signal has exceeded the BER signal
degrade threshold. Signal degrade is defined by Telcordia as a soft failure condition. SD and signal fail
(SF) both monitor the incoming BER and are similar conditions, but SD is triggered at a lower bit error
rate than SF.
The BER threshold is user-provisionable and has a range for SD from 1E–9 dBm to 1E–5 dBm.
SD can be reported on electrical ports that are In-Service and Normal (IS-NR); Out-of-Service and
Autonomous, Automatic In-Service (OOS-AU,AIS); or OOS-MA,MT, but not in the Out-of-Service and
Management, Disabled (OOS-MA,DSBLD) service state. The BER count increase associated with this
alarm does not take an IS-NR port out of service, but if it occurs on an AINS port, the alarm prevents
the port from going into service.
The SD 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 faulty fiber
connection), a bend in the fiber that exceeds the permitted bend radius, or a bad fiber splice. SD can also
be caused by repeated 15310-CL-CTX card resets that in turn can cause switching on the lines or paths.
Warning
Invisible laser radiation could be emitted from the end of the unterminated fiber cable or connector.
Do not stare into the beam directly with optical instruments. Viewing the laser output with certain
optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of
100 mm could pose an eye hazard.
Statement 1056
Warning
Use of controls, adjustments, or performing procedures other than those specified could result in
hazardous radiation exposure.
Statement 1057
Note Some levels of BER errors (such as 1E–9 dBm) take a long period of time to raise or clear, about
9,000 seconds, or 150 minutes. If the SD threshold is provisioned at 1E–9 dBm rate, the SD alarm needs
at least one and one-half hours to raise and then another period at least as long to clear.