The problem of MA5671 ONT registered on MA5680T

Hi, 

The MA5671 (the ONT receiving optical power is normal) can be automatically found in the MA5680T command line. Once the ONT is bound, it will appear online, and it will go offline within a few seconds, and the PON indicator of the ONT will flash. One network port of the ONT is connected to the switch, and one network port is connected to the AP. Unplug the network cable of the ONT, unbind and register again. The ONT can register and stay online. Once the switch and AP are connected, the ONT goes offline, and then unplug the AP. And the switch keeps showing offline, be sure to unbind it again and then it will go online after registration (without connecting the switch and AP).

What I don't understand is that the network storm or other reasons would affect the ONT registration.

Thank you!