Optimal virtual path bandwidth management assuring network reliability

The impact of virtual path bandwidth (VPB) management on the network performance in the expected environment of broadband integrated service digital network (B-ISDN) has been recognized, and several VPB control schemes have been proposed. The authors present the optimal VPB management which minimizes the worst call blocking probability of all VPs in the network. They solve a large network optimization problem by a rigorous analytical procedure. The optimization model comprises bandwidth distribution schemes assuring network reliability. The demand for reliability requires considerably larger bandwidth to be installed in the backbone network, and therefore optimal VPB management is essential. As an application example, a model asynchronous transfer mode (ATM) network is examined