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To resolve the high memory bandwidth requirements presented by output-queued switches, several parallel shared-memory architectures have been recently proposed. The complexity of such systems lies in the algorithms used to assign arriving packets to available shared memories. To date, packet placement algorithms either require N sequential placement decisions per interval or necessitate O(N2) memories,...
The paper presents an analysis of a discrete-time Markov-modulated process for generating heterogeneous bursty traffic in input-queued switches. The goals of the model described are two fold. First, it constitutes an expansion of the classic ON/OFF process to address scenarios in which multiple queues receive bursts from a shared input stream. Second, in concert with the first goal, it enables 100%...
Determining queue urgency (or weight) is a fundamental challenge, particularly in the context of high-speed packet switching. Weighting schemes have significant impact on the decisions made by arbitration and/or scheduling mechanism, thus directly shaping the overall performance of the system. Various weight functions, including iterative longest-queue-first (iLQF) and iterative oldest-cell-first...
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