INTERNETTING CONNECTIONLESS DATA-NETWORKS WITH A WIDE AREA PUBLIC ATMNETWORK

Connectionless data services on ATM-based B-ISDN can be realized direc tly by means of the connectionless service function which is provided in connectionless servers. In this paper, we consider how to locate a certain amount of connectionless servers among the switching nodes in a public ATM network for the internetworking of connectionless data ne tworks. The problem is formulated as a network optimization problem wh ich is similar to the p-median problem. Two algorithms, one based on t he greedy method and the other using branch-and-bound strategy, are pr esented to determine the locations of connectionless servers. By findi ng the optimal locations of connectionless servers, an optimal virtual overlay network which has minimized total transport costs for the con nectionless data traffics can be constructed. (C) Elsevier Science B.V .