Reliable and secure Ethernet connection system between luminaires not requiring the use of external switches. For luminaires that use many channels, an integrated internal switch allows fast multi-protocol Ethernet communication via ArtNet™, sACN and others. This internal solution avoids distributing the signal in a star layout, which is cable-intense and unreliable. The system is equipped with protection that disconnects the internal switch in the event of a power failure and ensures continuity of the signal to the luminaire.