Packetized smooth switching for buffered crossbar switches
Hongtao Guan, Youjian Zhao, Jianping Wu, Xiaoping Zhang, Zhenhua Liu · IASTED International Conference on Parallel and Distributed Computing and Systems · 2007
A sort of CICQ switches called the smoothed buffered crossbar or sBUX based on a new rate-based flow control scheme has been proposed in order to induce more scalability and predictability. However, sBUX supports fixed-length cells only, and the synchronization of input scheduling and output scheduling is required. In this paper, a new rate-based CICQ switch called sBUX+, which uses a novel packetized smoothed scheduler s-WF2Q as input and output schedulers, is proposed. It can support variable-length packet switching without fragmentation. In sBUX+, the buffer occupancy in the crosspoint is bounded by three packets with the longest length. The most appealing property of sBUX+ is the bounded packet departing time when supporting guaranteed services.