A functional node for an information transmission network and corresponding network are disclosed. In one aspect, the functional node includes at least one module for distributing messages between input and output ports. The distribution module includes at least one combination of at least three ports, including a first input port connected to a second output port by a first capability for unconditionally propagating messages, not depending on the messages. The first and/or second ports are connected to a third port by a second capability for conditionally propagating messages, depending on the messages.