The (radio) prerequisites for esight to automatically discover OLT and MXU devices by IP address...

Esight and the device need to be on the same network segment, otherwise the device cannot be discovered using the ARP broadcast protocol.

You already have the operation permission of "Resource Access".

Esight and the device can be routed to communicate (ping each other).

The SMMP parameters on the esight side have been configured and are aligned with the device side SP parameters.