Lo-Laserbias; Clear The Lo-Laserbias Alarm; Lo-Lasertemp - Cisco ONS 15310-CL Troubleshooting Manual

Chapter 1 Alarm Troubleshooting

1.7.139 LO-LASERBIAS

The Equipment Low Transmit Laser Bias Current alarm is raised against OCN port or PPM laser
performance. The alarm indicates that the laser has reached the minimum laser bias tolerance. If the
LO-LASERBIAS alarm threshold is set at 0 percent (the default), the laser's usability has ended. If the
threshold is set at 5 percent to 10 percent, the card is still usable for several weeks or months before you
need to replace it.
For information about this alarm applies to DWDM objects, refer to the "Alarm Troubleshooting"
Note
chapter in the Cisco ONS 15454 DWDM Troubleshooting Guide.

Clear the LO-LASERBIAS Alarm

Step 1 Complete the
(15310-CL-CTX or CTX2500).
Removing a card that currently carries traffic on one or more ports can cause a traffic hit. To avoid this,
Caution
perform an external switch if a switch has not already occurred. See the
Lock Initiation, and Clearing" section on page 1-148
Caution Always use the supplied electrostatic discharge wristband when working with a powered ONS 15310-CL
or ONS 15310-MA.
Note
If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
Step 2
for more information or call Cisco TAC (1 800 553-2447).

1.7.140 LO-LASERTEMP

The Equipment Low Laser Optical Transceiver Temperature alarm applies to the TXP and MXP cards.
For more information about this alarm, refer to the "Alarm Troubleshooting" chapter of the
Cisco ONS 15454 DWDM Troubleshooting Guide.
78-17235-01
Default Severity: Minor (MN), Non-Service-Affecting (NSA)
SONET Logical Objects: EQPT, OCN
DWDM Logical Object: PPM
"Physically Replace a Card" procedure on page 1-155
When you replace a card with the identical type of card, you do not need to make any changes
to the database.
for commonly used traffic-switching procedures.
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
1.7.139 LO-LASERBIAS
for the controller card
"1.10.1 Protection Switching,
1-91