USER-SPECIFIED KEY CREATION FROM ATTRIBUTES INDEPENDENT OF ENCAPSULATION TYPE
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United States of America Patent
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app pub date -
Jun 30, 2011
filing date -
Jul 16, 2004
priority date (Note) -
Abandoned
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Abstract
An integrated circuit has a hardware decoder that parses a frame to identify a type of encapsulation. The integrated circuit also has a number of hardware parsers, each parser being coupled to the decoder by an enable line. During packet processing, one of the parsers is enabled by the decoder, based on the value which identifies the encapsulation type. The enabled parser retrieves one or more attributes from the frame, depending on the encapsulation. The integrated circuit also has a register, coupled to each parser. The register holds the attributes retrieved by the parser. The integrated circuit also has a key generation hardware which creates a key, by concatenating from the attributes register, certain attributes that are pre-selected by a user for forming the key. The integrated circuit supplies the key to a memory to look up a set of user-specified actions to be performed on data in the frame.
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