Packet switch architecture with multiple output queueing

In this paper, a new packet switch architecture with multiple output queuing (MOQ) is proposed. In this architecture, the nonblocking switch fabric, which has a capacity of N/spl times/N/sup 2/, and output buffers arranged into N separate queues for each output, are applied. Both switch fabric and buffers can operate at the same speed as input and output ports. This solution does not need any speedup in the switch fabric as well as arbitration logic for taking decisions which packets from inputs are to be transferred to outputs. The mean cell delay and cell loss probability, as performance measures for the proposed switch architecture, are evaluated and compared with the performance of the OQ architecture and VOQ architecture. The hardware complexity of the proposed switch is very similar to the VOQ switch but its performance is comparable to the OQ switch.