Term addressable memory of an accelerator system and method
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United States of America Patent
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Jul 27, 2004
Grant Date -
Sep 27, 2001
app pub date -
Jan 8, 2001
filing date -
May 17, 1999
priority date (Note) -
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Abstract
An improved term addressable memory of an accelerator system and method includes a mechanism for performing predetermined plurality of pattern matches of packets to classify them for use with stateful protocol processing units that can resolve session data spread across multiple data packets and process them for the ultimate destination. The invention replaces a conventional content addressable memory with a term addressable memory, whereby redundant terms are recorded with a single memory entry. Two classes of terms are used to match packet addresses and application ports, as well as a much smaller session CAM that matches the aggregate match of all terms to a specific session.
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