Dear friend!
For the OLA board, the IN_PWR_HIGH alarm is reported, the most likely scenario is: The input optical power is excessively high, and the attenuation configured is insufficient.
1, If the alarm is generated on the client-side, check whether the input optical power is within the permitted range. If the input power is abnormal as shown on the NMS, use a power meter to measure the input optical power of the board that reports the alarm to check whether the input optical power is within the permitted range. If the input optical power is abnormal, increase the attenuation so that the input optical power is within the permitted range.
2. If the alarm is generated on the WDM side, check whether the input optical power is within the permitted range. . If the input optical power is abnormal, query the input and output optical power of the board in the upstream direction of the OTU along the reverse signal flow on the NMS. If the input and output optical power of the upstream board exceeds the permitted range, adjust the input optical power of the board to a proper value.
If the alarm persists, the hardware may be faulty. Replace the hardware.
If the OLA board reports the R_LOS alarm, the possible causes are as follows:
Cause 1 (reported from the client side): No fiber jumper is connected to the optical port on the board of the local station, the fiber jumper connected to the optical port is loose, or the fiber jumper is connected incorrectly.
Cause 2 (reported from the client side): The line attenuation is excessively high or a fiber cut occurs.
Cause 3 (reported from the client side): The board that reports this alarm is faulty.
Cause 1 (reported from the WDM side): No fiber jumper is connected to the optical port on the board of the local station, the fiber jumper connected to the optical port is loose, or the fiber jumper is connected incorrectly.
Cause 2 (reported from the WDM side): The line attenuation is excessively high or a fiber cut occurs.
Cause 3 (reported from the WDM side): The laser of the board at the opposite station is shut down.
Cause 4 (reported from the WDM side): The transmit module of the opposite station or receive module of the local station is faulty.
Please click R_LOS (OTN) to view the handling procedure.
Thank you!
