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Abstract

A linked list for multicast in an ATM network. The linked list comprises a first cell. The linked list also comprises a plurality of read pointers. Each read pointer is associated with a port. Each read pointer points to the first cell. A multicast system for an ATM network. The system comprises a first port through which a cell passes. The system also comprises a first read pointer associated with the first port. The multicast system additionally comprises at least a second port through which the cell passes. There is at least a second read pointer associated with the second port. The multicast system is comprised of a cell to which each read pointer points. Furthermore, the multicast system is comprised of a controller for controlling when a read pointer reads a cell. The system preferably includes a plurality of cells. Each cell has a cell pointer pointing to a next cell. The plurality of cells forms a linked list. The controller points a read pointer to the next cell after the cell the read pointer was pointing to is read. A method for multicasting. The method comprises the steps of forming a first read pointer and at least a second read pointer. Each read pointer corresponds to a first port and a second port, respectively. Each read pointer points to a cell. Then there is the step of choosing a port. Next there is the step of locating the read pointer for the port. Then there is the step of reading the cell to which the read pointer is pointing. Preferably, the cell includes data and the cell includes a cell pointer pointing to a second cell, if there is a second cell. The first cell and at least the second cell forms a linked list.

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