Packet classification

Details Packet classification Packet classification

2011-06-07

2011-06-07

Sefcheck, Gregory B (Department: 2477)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S395320, C707S793000

Reexamination Certificate

active

07957387

ABSTRACT:
An apparatus for classifying a data packet includes an interface for receiving the data packet; a classification controller for parsing the data packet to identify a plurality of data items required for classifying the data packet; memory for storing a set of range identifiers for each data item in the data packet corresponding to a rule range defined in the rule sets; and a controller for performing a preliminary test of at least one of the data items to determine whether any of the data item's values match known frequently-occurring values for that data item.

REFERENCES:
patent: 2002/0191605 (2002-12-01), Lunteren
patent: 1128608 (2001-08-01), None
Research Report-Prefix based Parallel Packet Classification, by A.P.J. Engemersen and J. Van Lunteren, 15 pages, Mar. 6, 2000.
High-Speed Policy-based Packet forwarding Using Efficient Multi-dimensional Range Matching T.V. Lakshman and D. Stiliadis, Bell Laboratories, 13 pages, 1998.
Dynamic Multi-Field Packet Classification, by Jay van Lunteren and Tom Engbersen, IBM Research, Zurich Research Laboratory, pp. 2215-2219, 2002.
Packet Classification on Multiple Fields, by Pankaj Gupta and Nick McKeown, Computer System Laboratory, Stanford University, 14 pages, Aug. 1999.

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