Patent ID: 6606302
Filing Date: 2003-08-12
Classification: H04L

Abstract:
A method for utilizing an ATM switch with distributed architecture and storage at input to control flows within the ATM switch, the ATM switch including input line cards and output ports connected to respective of the input line cards, the method comprising:distributing, to each of the input line cards, a specified number n of shapers, one shaper being dedicated to a VBRnrt (variable bit rate non-real time) category flow and being adjusted as a function of a totalized mean bit rate of the VBRnrt category flow, and nâˆ’1 other shapers being dedicated to ABR (Available Bit Rate) and UBR (Unspecified Bit Rate) category flows; associating, with each ABR and UBR connection, a tree whose root is constituted by its respective input line card and whose leave are constituted by respective of the output ports; assigning each tree to one of the n shapers chosen as a function of the nominal bit rate of the leaves of the tree being assigned, the chosen shaper being adjusted as a function of the available bit rate of the leaves of all the trees assigned to the chosen shaper.