Uni-/Multicast Support MCICQ Switch and Its Performance Simulation
Li Hui · Jisuanji fangzhen · 2009
Buffered crossbar switches have inherent advantages in supporting multicast traffic, and scheduling policies can be simplified to a great extent when distributed scheduling mechanism is applied. However, simulation results indicate that the increment of multicast traffic will block unicast, and finally reduce the performance of the entire device. In order to overcome this deficiency, a new switching fabric MCICQ (Multicast supporting CICQ) was proposed which supported the uni-/multicast hybrid scheduling, and scheduling policies MFDR and MFS which supported the parallel distributed uni-/multicast were proposed. With the fan-out splitting mechanism, both MFDR and MFS can achieve good performance without speedup, and their complexity is only O(1). MFS scheduling policy can also provide different bandwidth guarantees for uni-/multicast traffic. Simulation results under SPES show that both MFDR and MFS can achieve good performance.