Design of Partially Buffered Crossbar Switches for Supporting Mixed Traffic

Because new multicasting applications on the Internet are numerous, the demands of multicast traffic will continue growing. Currently, the CICQ with N2 VOQs for unicast flow and k MQs for multicast flow is the major architecture to support mixed traffic. In this study, we propose a switch called multicast virtual output queues and partially buffered crossbar switch (MQ-PBD) to support mix traffic. The number of CB in MQ-PBC switch is much less than traditional CICQ switch and a three phase (request-grant-accept) matching algorithm is adopted to solve the contentions. We also proposed two selecting scheme, MURR and MF, for input schedulers. The experimental results showed that the proposed MQ-PBC switch can achieve well performance and efficiently support the mix traffic.