Methods and apparatus for packet classification with multi-level data structure
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United States of America Patent
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May 20, 2003
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N/A
app pub date -
May 21, 1999
filing date -
Feb 1, 1999
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Abstract
Providing different levels of quality of service for different data flows being transported over a data link requires a very fast way to classify individual packets. Providing meaningful classification generally requires classifying data packets in several dimensions. A classification method represents a rule base as a hierarchy of linked tables and sequentially matches each parameter value in a packet signature against tables in the hierarchy. The method supports longest prefix matching and avoids time consuming backtracking by adding rules to the rule base.
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