Frame based traffic policing for a digital switch

Details Frame based traffic policing for a digital switch Frame based traffic policing for a digital switch

H - Electricity

04

L

H04L 12/56 (2006.01) H04L 29/02 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2211020

A frame based traffic policing system that determines if incoming data cells are conforming or non-conforming according to the traffic contract. The frame based traffic policing system first detects a cell at the beginning or end of a frame and determines if the frame conforms with a traffic contract. If the cell does not exceed the parameters of the traffic contract, then the frame based traffic policing system deems the cell as conforming. If the cell was the first cell of a frame, then frame based traffic policing system treats all the remaining cells in the frame as conforming or non-conforming depending upon if the first data cell was conforming or non-conforming. If the cell was the last cell of a frame, then frame based traffic policing system treats all the cells of the following frame as conforming or non-conforming depending upon if the last cell of the previous frame was conforming or non-conforming. In this manner, all the data cells from the same frame receive the same treatment by the network. The framed based traffic policing system improves the throughput of the network since the network will be less likely to waste resources transmitting cells from a corrupted frame.

Système de surveillance du trafic par trames déterminant si les cellules de données d'arrivée sont conformes ou non conformes en fonction du contrat de trafic. D'abord, le système détecte une cellule au début ou à la fin d'une trame et détermine si celle-ci est conforme audit contrat. Si la cellule n'excède pas les paramètres dudit contrat, alors le système la juge conforme. S'il s'agit de la première cellule d'une trame, alors le système traite le reste des cellules de la trame comme conformes ou non conformes selon que cette première cellule était conforme ou non conforme. S'il s'agit de la dernière cellule d'une trame, alors le système traite toutes les cellules de la trame suivante comme conformes ou non conformes selon que cette dernière cellule était conforme ou non conforme. Ainsi, le réseau traite de la même façon toutes les cellules de données de la même trame. Le système améliore le débit du réseau car celui-ci sera moins susceptible de gaspiller des ressources en transmettant des cellules d'une trame corrompue.

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