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.
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