Addressing sequential data packets

H - Electricity – 04 – L

Patent

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H04L 12/56 (2006.01) G06F 5/06 (2006.01) H04L 12/54 (2006.01)

Patent

CA 2469425

A sequential data packet addressing technique and system, particularly adapted for shared memory output-buffered switch fabrics and related memories, using a ring of successive subaddress generators each assigning addresses for predetermined size data byte packets .received in successive time slots, and creating therefrom super packets ordered based on arrival time; and sequentially allocating memory therefor in the shared memory without overlap among the packets and with no holes between adjacent packets, and assigning addresses for the individual packets in the super packets upon the assigning of an address in the memory for each super packet.

L'invention concerne une technique et un système pour l'adressage de paquets de données séquentiels, qui conviennent particulièrement à des matrices de commutation à registre de sortie à mémoire partagée et à des mémoires apparentées. Selon l'invention, on utilise un anneau de générateurs de sous-adresse successifs qui affectent chacun des adresses à des paquets d'octets de données de taille prédéterminée, reçus dans des tranches de temps successives, et créent ainsi à partir de ces paquets des <= super paquets >= ordonnés en fonction de leur instant d'arrivée. On alloue séquentiellement de la mémoire à ces super paquets dans la mémoire partagée, sans créer de chevauchements entre les paquets ni de lacunes entre des paquets adjacents. On affecte des adresses aux paquets individuels se trouvant dans les super paquets lors de l'affectation à chaque super paquet d'une adresse en mémoire.

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