Methods and apparatus for packet classification with multi-level data structure
US6567408B1 · kind B1 · utility
143Cited by
9References
18Claims
0Family size
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Key dates
| Filing date | May 21, 1999 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | May 21, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2012/5679
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.