This paper presents a multicasting solution for a shared-buffer ATM switch. The cell duplicating function is performed by a one-to-many modified demux circuit. A shared multicast server is used to translate input multicast cells to find destination ports and corresponding routing information. By using a link-list based ring structure, the multicast server can provide high speed (5 ns for search entry in 256-entry block in 0.8 /spl mu/m CMOS process) and a cascadable multicast translating function. In addition, the channel complexity of multipoint-to-multipoint multicast applications can be reduced to N channels per N users. The shared-buffer controller is modified by adding controlling and scheduling functions for multicasting queues to process the multicast feature.
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机译：本文提出了一种共享缓冲区ATM交换机的多播解决方案。单元复制功能由一对多修改的多路分配器电路执行。共享多播服务器用于转换输入的多播单元以查找目标端口和相应的路由信息。通过使用基于链接列表的环形结构，多播服务器可以提供较高的速度（5 ns用于0.8 / spl mu / m CMOS工艺的256条目块中的搜索条目）和可级联的多播转换功能。另外，多点对多点多播应用程序的信道复杂度可以降低到每N个用户N个信道。通过添加用于多播队列以处理多播功能的控制和调度功能来修改共享缓冲区控制器。
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