Methods and apparatus for mapping fields of entries into new...

Electrical computers and digital processing systems: memory – Address formation – Address mapping

Reexamination Certificate

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C370S399000, C370S409000, C370S395320, C711S003000, C711S216000

Reexamination Certificate

active

10212965

ABSTRACT:
Fields of entries are mapped into new values with these mapped values combined into mapped entries for use in lookup operations typically for packet processing. One implementation identifies a list including multiple items each having a first field and a second field. The unique first and second fields of each item are respectively mapped to mapped first and second fields. A first associative memory is programmed with the unique first fields, and a first stage memory is programmed with the mapped first fields at corresponding locations. A second associative memory is programmed with the unique second fields, a second stage memory is programmed with the mapped second fields at corresponding locations. A second stage associative memory is then programmed, using the mapped first and second fields, with entries corresponding to one or more of the original multiple items.

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