DCP boards report the MUT_LOS alarms and the TDG board reports the OPU1_PLM alarm.

Dear Winter_ba!

As Wissal said, it can have four reasons:

1. OWSP protection is incorrectly configured.

2. The DCP boards are faulty.

3. Fibers on the DCP boards are incorrectly connected.

4. The switching protocol functions incorrectly.

Solution:

1.  Check the switching status of each NE, especially the protection status of #5013 and #5014. If the switching fails, reconfigure the OWSP protection. If the fault persists, replace the DCP board. If the switching is in the ideal state, proceed to the next step. 

2.  Check the NE that reports the MUT_LOS alarm. If the value is not #5013 or #5014, it indicates that the fiber jumper of the NE is faulty. In this case, you are advised to reconnect the fiber jumper. 

3. If the problem persists, please contact Huawei engineers.

Thank you! 

Hello,

Be informed that the possible causes of the problem are as follows:

• OWSP protection is incorrectly configured.

• The DCP boards are faulty.

• Fibers on the DCP boards are incorrectly connected.

• The switching protocol functions incorrectly.

Thanks