Process to produce biomass and proteins by microalgae

A method for managing multicast traffic between routers communicating by means of a protocol integrating the PIM (Protocol Independent Multicast) protocol, wherein a router sends to another router messages according to said protocol integrating the PIM protocol to request a type of multicast traffic or to reject a type of multicast traffic, characterized in that at least one of said routers is an improved router (110, 120, 130, 140) which:

• when it receives one of said messages sent by another router, obtains in said message an address of the router that has sent said message;
• stores in a record, for each network interface (112, 122, 132, 142) through which it receives said messages and for each type of multicast traffic requested, the addresses of the routers interested in receiving said type of multicast traffic;
• and
• uses the information contained in said record to decide whether to transmit or to stop transmitting said type of multicast traffic through said network interface (112, 122, 132, 142).