| 摘要 |
A multicast connection scheduling method for a 3-stage switch fabric with n<SUB>1 </SUB>first stage, n<SUB>2 </SUB>second stage and n<SUB>3 </SUB>third stage interconnected switching devices. The first and third stage devices are non-blocking for unicast connections. The center stage devices are non-blocking for multicast connections. Load tables are provided for each center stage device, with one row per first and/or third stage device. Each row represents the number of connections being serviced between the first and/or third stage devices, through the center stage device corresponding to the table. By monitoring and updating the tables, the invention derives an approximately optimal connection schedule for an input list of connection requests, such that no input connection load exceeds any center stage device's maximum input connection load capacity and no output connection load exceeds any center stage device's maximum output connection load capacity.
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