An apparatus and method for processing a data packet to determine the routing of the data packet through a communications network is provided in which the data packet has a header portion and a data portion. The apparatus stores the header portion of the data packet, and processes the header portion...http://www.google.com.hk/patents/US6032190?utm_source=gb-gplus-share專利 US6032190 - System and method for processing data packets
