Packet switch system structure for reducing to reduce a blocking problem of broadcast packets

摘要

The present invention relates to a structure of a packet switch system for solving the problem of blocking that occurs when point-to-multipoint switching operation as broadcast packets.; Packet switch system of the present invention is a unicast packet and a broadcast / multi-separation of the switching path of the multicast packet to unicast packets, and switching through the switch fabric, according to their destination, broadcast packets are broadcast packets from the switch fabric, It is switched to separate paths in order of the assigned switching. Broad separate switching path for the multicast packet is processed to store the packets which are being connected to any output port module, the output port module to remove the buffer for unicast and broadcast buffer for a bus type. Packets that are stored separately in the output port module are controlled by the management packet forwarding unit for transmission of data. And input and output port module forwarding negative signal bus is configured to separate in accordance with the signals to be processed. Thus, the packet switch system architectures of the present invention can reduce the blocking of the switch during the switching operation for the broadcast / multicast packet, since the broadcast packet and the unicast packet is processed at a slot time can be improved switch performance. In addition, input and output port module forwarding portion bus structure consisting of separated allows to obtain a wire-speed switching performance in a low internal capacitance signal.