Bandwidth allocation in ethernet networks

H - Electricity – 04 – L

Patent

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Details

H04L 12/24 (2006.01) H04L 12/40 (2006.01) H04L 12/46 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01)

Patent

CA 2364090

For assigning bandwidth in a constrained topology ethernet network there is presented a function that creates and manages a ledger of bandwidth requests over the ethernet network. The function, a bandwidth manager, tracks the total bandwidth of each link in the network and the bandwidth that has been reserved on each link. When traffic is granted reserved bandwidth the bandwidth manager notes this allocation in the ledger. The header of the traffic packets indicates that the traffic is of highest priority when the traffic has been given reserved bandwidth. In this manner the bandwidth manager can track and limit the amount of high priority traffic on the network.

Cette invention concerne une fonction d'affectation des largeurs de bandes dans un réseau Ethernet à topologie contrainte. Cette fonction crée et gère un journal des demandes de largeurs de bandes par le réseau Ethernet. La fonction, gestionnaire de largeurs de bandes, assure le suivi de la largeur de bande totale de chacune des liaisons du réseau et de la largeur de bande réservée pour chacune des liaisons. Lorsque le trafic obtient la largeur de bande réservée, le gestionnaire des largeurs de bandes note cette affectation dans le journal. L'en-tête des paquets de trafic indique que le trafic a la priorité la plus haute lorsqu'il obtient la largeur de bande réservée. Ainsi, le gestionnaire de largeurs de bandes peut assurer le suivi et limiter l'importance du trafic à haute priorité dans le réseau.

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