Performance Analysis of Gateways with Buffer Constraints

The performance of interconnected networks is highly depenht on the performance of the gateways. Since the finite storage capability of gateways effects the throughput it has to be considered for the analysis of interwnnected networks. Different configurations of networks are studied: i) Gateways and the channels of local area networks have no buffer capacity constraints, ii) Only gateways have buffer capacity constraints. iii) Only the channels of local area networks have buffer capacity constraints. iv) Both gateways and the channels of the local area networks have buffer capacity constraints. An approximation method is introduced which allows to compute the throughput for the above network configurations. Examples are given to demonstrate the impacts of gateway buffer capacity on the performance of the network Approximate results are compared and validated by simulation.