A manufacturer of energy controllers, for example, that are integrated into the LAN can find its devices via its own software. This list contains only its own devices.
I would like to implement this mechanism in my own devices in order to be able to find them on the network via my own software.
I don't like the idea of monitoring a specific port. Is there a mechanism in the network protocol or something else that can be used?
I want to do this via c++
What I have tried:
I searched the internet, but cant find the right answer. I tried it over the keywords "identify device" "lan" "network"