Method and apparatus for longest match address lookup

Details Method and apparatus for longest match address lookup Method and apparatus for longest match address lookup

H - Electricity

04

L

H04L 12/56 (2006.01) G06F 17/30 (2006.01)

Patent

CA 2393760

We present a lookup table for providing a longest prefix match for a key provided in a search request. The search key is provided in a single search request issued to the lookup table. The lookup table performs a multi-level search for the result value based on successive portions of the key.

L'invention concerne une table de recherche destinée à fournir la correspondance de préfixe la plus longue pour une clef indiquée dans une demande de recherche. La clef de recherche figure dans une seule demande de recherche remise à la table de recherche. Pour trouver la valeur du résultat, la table de recherche effectue une recherche multi-niveau basée sur des segments successifs de la clef.

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