Parse state encoding for a packet parsing processor

Details Parse state encoding for a packet parsing processor Parse state encoding for a packet parsing processor

2004-08-25

2009-11-17

Moe, Aung S (Department: 2416)

Multiplex communications

Diagnostic testing

Determination of communication parameters

C370S392000, C709S238000

Reexamination Certificate

active

07619983

ABSTRACT:
The present invention provides a packet processing device and method. A parsing processor provides instruction-driven content inspection of network packets at 10-Gbps and above with a parsing engine that executes parsing instructions. A flow state unit maintains statefulness of packet flows to allow content inspection across several related network packets. A state-graph unit traces state-graph nodes to keyword indications and/or parsing instructions. The parsing instructions can be derived from a high-level application to emulate user-friendly parsing logic. The parsing processor sends parsed packets to a network processor unit for further processing.

REFERENCES:
patent: 5748905 (1998-05-01), Hauser et al.
patent: 6360213 (2002-03-01), Wagstaff et al.
patent: 6952756 (2005-10-01), Le
patent: 2006/0095588 (2006-05-01), Van Lunteren
PCT International Search Report and Written Opinion, PCT/US05/13191, Dec. 18, 2006, 10 pages.

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