PROGRAMMABLE PACKET PROCESSOR WITH FLOW RESOLUTION LOGIC

摘要

PROBLEM TO BE SOLVED: To provide a programmable network processor having efficient classification logic of an incoming packet.;SOLUTION: A programmable packet switching controller has a packet buffer, a pattern-matching module, a programmable packet classification engine and an application engine. The packet buffer stores inbound packets the includes a header data extractor extracting header data from the inbound packets and storing the extracted header data in a header data cache. The header data extractor generates a header data cache index and supplies it to the packet classification engine, so that the extracted header data are retrieved. The packet classification engine has the classification logic of a decision tree base for classifying the packets. A leaf indicates the packet.;COPYRIGHT: (C)2002,JPO