Incremental updates for ordered multi-field classification rules when represented by a tree of longest prefix matching tables
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United States of America Patent
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Apr 26, 2016
Grant Date -
May 28, 2015
app pub date -
Dec 5, 2013
filing date -
Nov 27, 2013
priority date (Note) -
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Abstract
An apparatus includes a memory and a processor. The memory may be configured to store at least a portion of a multi-level tree representation of an ordered multi-field rule-based classification list. The tree representation includes at least one non-leaf level and one or more leaf levels. Each entry in the at least one non-leaf level contains a count value indicating a number of rules having a matching field. Entries in at least one of the one or more leaf levels include rule pointers arranged in priority order. The processor may be configured to incrementally insert or delete rules, while preserving ordering semantics of the tree representation.
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