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Cisco ONS 15310-MA SDH Troubleshooting Guide, Release 9.0
78-18663-01
Chapter 2 Alarm Troubleshooting
Alarm Procedures
Step 2 If the alarm 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).
2.7.92 HI-LASERBIAS
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SDH Logical Objects: EQPT, STM
DWDM Logical Object: PPM
The Equipment High Transmit Laser Bias Current alarm is raised against STM port laser performance.
The alarm indicates that the card laser has reached the maximum laser bias tolerance.
Laser bias typically starts at about 30 percent of the manufacturer maximum laser bias specification and
increases as the laser ages. If the HI-LASERBIAS alarm threshold is set at 100 percent of the maximum,
the laser usability has ended. If the threshold is set at 90 percent of the maximum, the card is still usable
for several weeks or months before it needs to be replaced.
Clear the HI-LASERBIAS Alarm
Step 1 Complete the “Physically Replace a Card” procedure on page 2-153 for the controller card (ONS
15310-MA SDH).
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 “2.9.1 Protection Switching,
Lock Initiation, and Clearing” section on page 2-146 for commonly used traffic-switching procedures.
Caution Always use the supplied electrostatic discharge wristband when working with a powered
ONS 15310-MA SDH.
Note When you replace a card with the identical type of card, you do not need to make any changes
to the database.
Step 2 If the alarm 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).
2.7.93 HI-LASERTEMP
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SDH Logical Object: STM
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