2-100
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
Chapter2 Alarm Troubleshooting
2.7.151 LO-TXPOWER
Step8 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call CiscoTAC (1-800-553-2447) in order to report a Service-Affecting (SA)
problem.
2.7.151 LO-TXPOWER
Default Severity: Minor(MN), Non-Service-Affecting (NSA)
SONET Logical Objects: EQPT, OCN
DWDM Logical Object: PPM
The Equipment Low Transmit Power alarm is an indicator for OCN port transmitted optical signal
power. LO-TXPOWER occurs when the measured optical power of the transmitted signal falls under the
threshold. The threshold value is user-provisionable.

Clear the LO-TXPOWER Alarm

Step1 Display the reporting card’s card view.
Step2 Click the Provisioning > Optical > Optics Thresholds tabs.
Step3 Increase the TX Power Low column value by 1%.
Step4 If the card transmit power setting cannot be increased without affecting the signal, complete the
“Physically Replace a Card” procedure on page 2-154.
Caution Removing a card that currently carries traffic on one or more ports can cause a traffic hit. To avoid this,
perform an external switch if a switch has not already occurred. See the “2.10.1 Protection Switching,
Lock Initiation, and Clearing” section on page2-147 for commonly used traffic-switching procedures.
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS15310-CL
or ONS 15310-MA.
Note When you replace a card with the identical type of card, you do not need to make any changes
to the database.
Step5 If no ports are shown bad and the alarm does not clear, log into the Technical Support Website at
http://www.cisco.com/techsupport for more information or call CiscoTAC (1-800-553-2447).
2.7.152 LPBKCRS
Default Severity: NotAlarmed (NA), Non-Service-Affecting (NSA)
SONET Logical Objects: STSMON, STSTRM