H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01)
Patent
CA 2520693
A versatile and efficient technique for classifying packets in an intermediate node. According to the technique, criteria and rules associated with the packet are applied to one or more classification stages (700, 800, 560) containing content-addressable memories (800a, 800b) (CAMs). Each stage examines specific criteria associated with the packet, e.g., a packet field, and generates a rule and additional criteria. The additional rule and criteria are provided to the next classification stage. This process continues until a final rule is provided to a final classification stage (560). At the final classification stage, the final rule is used to generate an identifier, e.g., queue identifier(ID), associated with the classified packet.
L'invention porte sur une technique souple et efficace de classification de paquets dans un noeud intermédiaire selon laquelle on applique à un paquet des critères et règles en une ou plusieurs étapes (700, 800, 560) de classification utilisant des mémoires adressables (800a, 800b) (CAMs). Chaque étape comporte l'examen d'un critère spécifique associé au paquet, par exemple le domaine du paquet, et l'élaboration d'une règle et d'un critère supplémentaire, utilisés pour l'étape suivante de classification. Le processus continu jusqu'à l'élaboration d'une règle finale s'appliquant à l'étape finale (560) de classification, ladite règle servant à créer un identifiant, par exemple un identifiant de file d'attente (ID) associé au paquet classé.
Levenson Herman
Marshall John W.
Schroter Russell E.
Cisco Technology Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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