A quality of service facility in a device for performing ip...

H - Electricity – 04 – L

Patent

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Details

H04L 12/56 (2006.01) H04L 12/46 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2301823

According to one embodiment, the invention is directed to a facility for providing Asynchronous Transfer Mode (ATM) and Internet Protocol (IP) Quality of Service (QoS) features in a digital communication node. The facility includes a plurality of logical input ports, a plurality of logical output ports, ATM switching elements, IP routing elements and QoS elements. The switching and forwarding elements transfer ATM data cells and IP data packets from the logical input ports to the logical output ports. The QoS elements prioritize, schedule and flow control the transfer of data, based at least in part on ATM QoS features associated with the ATM data cells and on IP QoS features associated with the IP data packets.

Selon une forme de réalisation, l'invention concerne un système pouvant fournir des fonctions de qualité de service (QoS) en mode de transfert asynchrone (ATM) et suivant un protocole Internet (IP) dans un noeud de communication numérique. Le système inclut une pluralité de ports d'entrée logiques, une pluralité de ports de sortie logiques, des éléments de commutation ATM, des éléments de routage IP et des éléments QoS. Les éléments de commutation et de routage transfèrent des cellules de données ATM et des paquets de données IP des ports d'entrée logiques vers les ports de sortie logiques. Les éléments QoS classent par ordre de priorité, programment et régulent le débit de transfert des données au moins partiellement sur la base de fonctions QoS ATM associées à des cellules de données ATM, et sur la base de fonctions QoS IP associées à des paquets de données IP.

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