Multicast scheduling in buffered crossbar switches with multiple input queues

We consider the problem of scheduling multicast traffic in a buffered crossbar switch with multiple input queues at each input port. In this paper, we design and investigate a series of combinations of queuing policies and scheduling algorithms and report the simulation result. It is shown that a small number of input queues at each input port can dramatically improve the performance under burst multicast traffic in buffered crossbar switches. Under this architecture, it is feasible to design simple queuing policies and scheduling algorithms for high speed switches while keeping high performance and small size of buffer within crossbar.