For the controller to work it needs ubiquiti equipment on the network. The controller simply asks them. It can't get around networking limitations, but it can ask the things that are actually doing routing for their information from their routing tables, etc.
This is why if you mix in a non ubiquiti switch the network map is incomplete... It's using it's own protocol to ask these things.
I don't know what pieces you have... APs, edge router or equivalent... But the controller is asking those what they see.
For the controller to work it needs ubiquiti equipment on the network. The controller simply asks them. It can't get around networking limitations, but it can ask the things that are actually doing routing for their information from their routing tables, etc.
This is why if you mix in a non ubiquiti switch the network map is incomplete... It's using it's own protocol to ask these things.
I don't know what pieces you have... APs, edge router or equivalent... But the controller is asking those what they see.