Method and system for frame and protocol classification
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United States of America Patent
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Aug 10, 2004
Grant Date -
N/A
app pub date -
Jan 7, 2000
filing date -
Jan 7, 2000
priority date (Note) -
Expired
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Abstract
A system and method of protocol and frame classification in a system for data processing (e.g., switching or routing data packets or frames). The present invention includes analyzing a portion of the packet or frame according to predetermined tests, then storing key characteristics of the packet for use in subsequent processing of the frame. The key characteristics for the frame (or input information unit, such as the type of layer 3 protocol used in the frame, the layer 2 encapsulation technique, the starting instruction address and flags indicating whether the frame uses a virtual local area network, preferably using hardware to quickly and in a uniform time period. The stored key characteristics of the packet are then used by the network processing complexes in its further processing of the frame. The processor is preconditioned with a starting instruction address and the location of the beginning of the layer 3 header as well as flags for the type of frame. That is, the instruction address or code entry point is used by the processor to start processing for a frame at the right place, based on the type of frame. Additionally, additional instruction addresses can be stacked and used sequentially at branches to avoid additional tests and branching instructions.
First Claim
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Patent Owner(s)
Patent Owner | Address | |
---|---|---|
INTERNATIONAL BUSINESS MACHINES CORPORATION | NEW ORCHARD ROAD ARMONK NY 10504 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Calvignac, Jean Louis | Cary, NC | 108 | 2988 |
Davis, Gordon Taylor | Chapel Hill, NC | 101 | 2172 |
Gallo, Anthony Matteo | Apex, NC | 38 | 699 |
Heddes, Marco C | Raliegh, NC | 78 | 2294 |
Leavens, Ross Boyd | Cary, NC | 19 | 567 |
Siegel, Michael Steven | Raleigh, NC | 72 | 2657 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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