Hi friend!
The switching cannot be triggered only by the R_LOS alarm. However, we can reduce the probability of switching being triggered.
1. Deactivate the SD trigger condition and deactivate the SF-triggered PM and TCM performance events.

2. Set the difference threshold of the working and protection input optical signals to 8 dB.

Note: Switching may not be triggered, the switching may not be triggered when services are interrupted. The normal settings are as follows:


I suggest you check whether the multiplexed-wavelength signal is normal. If yes, clear the fault on the multiplexed-wavelength signal channel. Because five OLP boards are switched at the same time, not only one optical-layer trail is affected.
Thanks!