Products

OptiX OSN 3500

Fault category

• R_LOS
• MS_RDI

Description

The MS_RDI alarm is reported on the port of SLQ4 single board. The laser status is off and the opposite node is not receiving an optical signal. The laser on command could not be executed.

Cause Analysis

• The command is not executed successfully
• Laser failure
• Other reasons

Operation Procedure

1. Turn on the laser using the webmaster, and the laser fails to turn on.
   1. Select the network element where the laser is located, right-click and select "Network Element Manager".
   2. Select the optical interface board where the laser is located, and in the function tree, select "Configuration > SDH Interface".
   3. Select "By Single Board/Port (Channel)", and set the "Laser Switch" status to "On".
2. Query the single board alarm.
   1. Select the board where the laser is located, right-click it, and select "Alarm Browse".
   2. Check the alarm information in the "Current Alarms" tab. The port is found to have R_LOS alarm.
3. Clear the R_LOS alarm and turn the laser back on. The laser turns on normally.

   
   

   Description:

   Clearing the R_LOS alarm can be done in two ways:

   • Alarm Reversal. Set "Reverse Status" to "Enable" in "Element Manager > Function Tree > Alarms > Alarm Reversal".
   • Block the R_LOS alarm.
     1. Select "Alarm > Alarm Mask Settings" in the Function Tree.
     2. In "Alarm Mask Settings", select the "R_LOS" alarm.
     3. Double-click the "Mask Status" column of the R_LOS alarm and select "Mask".

   
   

4. Use network management to query network element alarms without abnormal alarms.

Reference Information

The Turn off laser by R_LOS alarm function is off by default. When this function is enabled, the priority of the R_LOS alarm is higher than the priority of the Open Laser command. The Open Laser command is not executed in the presence of the R_LOS alarm. After clearing the alarm, the laser can be turned on normally.