System and apparatus for tunneling service of explicit multicast

This invention relates to the tunneling service method and equipment of explicit multicasting for the transmission destination of a packet to transmit in 效率 the explicit multicast packet which is plurality. This invention receives the explicit multicast packet transmitted to two or more addressees, The tunnel exit load of a tunnel is judged by two or more addressee addresses in the received explicit multicast packet, The tunnel header which makes a destination address the judged tunnel exit load address list is generated, After encapsulating an explicit multicast packet by the generated tunnel header and generating a tunnel packet, Transmit the generated tunnel packet to the above-mentioned tunnel exit load, and a tunnel exit load separates a tunnel header from a tunnel packet, By the destination address of the tunnel header from which the destination address of the explicit multicast packet from which the tunnel header was separated was separated. The tunneling service method and equipment of explicit multicasting which are characterized by performing multicasting routing which transmits an explicit multicast packet to two or more action addressees using the destination address information corrected by correcting are offered.