A Queue Model for Complex Networks with Adaptive Traffic

Evaluation of the rates of flow across complex networks is often carried out by the use of a queueing system describing the network node behavior. We here present a queue model to describe TCP network nodes with multiple input and multiple output flows and only one shared and limited buffer. We use this queue model together with performance estimation methods based on the fluid model to estimate TCP network performance by computer simulation and we report simulation results that give the utilization of each network link as a function of the buffer size for a simple network topology.