Investigation on the Influence of Packet Sizes on WRR Queue Management in Ethernet switch

The paper investigates the influence of the packet sizes of different traffic flows on the queuing delay in Ethernet switch. Investigation is based on the queue management algorithms most often used in Ethernet switches - weighted round robin and expedite queuing. As a base model the Cisco Catalyst 2950 queue discipline 1p3q is used. It has one expedite queue and three queues serviced using weighted round robin discipline. The experimental scenario is based on the common controller network traffic model - mixture of periodic CBR data flows and randomly occurred configuration and bulk traffic flows. Investigation is made using Network Calculus and Network Simulator.

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