A network device and a method of handling a frame in a network device defining a common header for each rule in a rules table of a search engine, wherein the common header comprises a source port specifying a corresponding rule to be applied to a port or ports, and a frame format specifying a format...http://www.google.es/patents/US7869411?utm_source=gb-gplus-sharePatente US7869411 - Compact packet operation device and method
