Abstract:

According to the disadvantage of traditional state detection’s high occupied space and software implementation’s low efficiency, a TCP state detection system was designed based on FPGA(field-programmable gate array),and a new method was proposed aimed at decreasing the occupied space of state detection table.The result of simulation indicated that the program could establish state tables according to the received data flows and give a warning for the overtime TCP connections. When using 4M Bytes space, our experiment could support a magnitude of 1 million connections,  the occupying amounts of the space was smaller than the traditional state detection.

Key words: FPGA; state detection; EMAC; TCP