Data packet recursive flow sorting method

A flow classification and data packet technology, applied in data classification, processing input data, etc., can solve the problems of increasing memory access times and time, complex preprocessing process, etc., to achieve the effect of rapid classification
CN1477494AInactive Publication Date: 2004-02-25ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZTE CORP
Publication Date
2004-02-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a data packet recursion flow classification method, said method includes the following steps: pretreatment stage, dividing the fields contained by rule in rule base into several domains and defining number for stages for recursive classificaltion and combination condition of every domain; the domain according to rule is determined value or range, making respective treatment and producing pretreatment victor table of every stage for recursive classification; and search stage, searching the received data packet in pretreatment vector table or every stage, defining class identification belonging to the data packet, then respectively processing data packets according to the service types correspondent to the class identifications of data packets.
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Description

Technical field

[0001] The invention relates to a method for classifying data streams in an IP network, in particular to a method for classifying recursive streams of data packets, which can rapidly classify and process data streams. Background technique

[0002] In the Internet, there are many kinds of network services that need to classify data packets and mark the business class that each data packet belongs to, so as to determine which service type they should accept. One of the simplest examples of data packet flow classification is IP address routing lookup, that is, searching the routing table according to the destination IP address in the data packet to select different routes. With the rapid development of the Internet, many new business requirements have emerged, such as access control lists, policy routing, differentiated services, and traffic accounting. The corresponding data flow classification technology has become more and more important. More and more compl...

Claims

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