An exact algorithm for the minimal cost gateways location, capacity and flow assignment problem in two-level hierarchical wide area networks

Authors:
Przemyslaw Ryba;Andrzej Kasprzak
Affiliations:
Wroclaw University of Technology, Chair of Systems and Computer Networks, Wroclaw, Poland;Wroclaw University of Technology, Chair of Systems and Computer Networks, Wroclaw, Poland
Venue:
ICCSA'07 Proceedings of the 2007 international conference on Computational science and its applications - Volume Part III
Year:
2007

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Abstract

In the paper the problem of designing two-level hierarchical structure of wide area network (WAN) is considered. The goal is to select gateways location, channel capacities and flow routes in order to minimize total cost of leasing capacities of channels of 2nd level network, subject to constraint on maximal acceptable value of average packet delay in hierarchical network. An exact algorithm is proposed. Some results of computational experiments are reported. Based on computational experiments, several properties of the considered problem, important from practical point of view, are formulated.