System for managing a fibre-optic ethernet network of a vehicle

A management system for managing a multiplex communications network of a vehicle, said communications network being a fiber-optic ethernet communications network;

• said management system comprising a plurality of computers that are connected to said communications network and a bidirectional wired link that interconnects said plurality of computers separately from said communications network, said communications network and said plurality of computers being switchable between a standby state and an awake state, said plurality of computers comprising a master computer and at least one slave computer, each of said master computer and said at least one slave computer being configured to emit and to receive a message relating to a requested state of the communications network via said bidirectional wired link, and wherein said master computer is configured to emit via the communications network a confirmation related to said requested state and said at least one slave computer is configured to receive the confirmation message, whereby the state of at least one of the plurality of computers is controlled on the basis of said message relating to the requested state so as to control the state of the communications network.