Packet-switch system

H - Electricity – 04 – L

Patent

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Details

H04L 12/00 (2006.01) H04L 12/56 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2295065

A packet-switch system utilizes a linecard-to-switch (LCS) protocol to integrate linecards with a switch core. Since the linecards include a majority of the buffering of the system and are located physically away from switch core, the size of the switch core can be reduced in size. The LCS protocol is a label-swapping, credit-based, flow-control, which enables the system to operate without requiring such information as the number of port modules available within a switch core or what Qualities of Service (QoS) or multicast flows are available. In addition, the LCS protocol enables the linecards to contain and manage the majority of the buffers in the system, and also to control the data drop policy within the system.

Selon cette invention, un système de commutation par paquets utilise un protocole carte de ligne/commutateur (LCS) pour intégrer des cartes de ligne à un noyau de commutation. Comme les cartes de ligne comprennent la plupart des tampons du système et sont physiquement éloignées du noyau de commutation, on peut réduire la taille du noyau de commutation. Le protocole LCS est basé sur l'échange d'étiquettes, le crédit et la commande des flux, ce qui permet au système de fonctionner sans demander des informations telles que le nombre de modules de port disponibles à l'intérieur d'un noyau de commutation, la qualité du service (QoS) ou la disponibilité de flux multidestinataires. En outre, le protocole LCS permet aux cartes de ligne de contenir et de gérer la plupart des tampons dans le système ainsi que de contrôler la politique d'interruption de données à l'intérieur du système.

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