Cost and availability analysis of 2- and 3-connected WDM networks physical interconnection

Our future in personal and professional lives is becoming more attached to the evolution of communication technologies and their applications. Consequently, the way Next Generation Network are currently being planned and deployed, might have a great impact on common people depending on how networks are physically interconnected. Ideally networks should be cheap, reliable, flexible, and energy efficient, among other properties. However, some of these properties are contradictory, i.e. higher fault tolerant networks usually imply higher deployment costs. Therefore, the interconnection decision is a search for the best trade-off among the relevant parameters for the network. In this paper we analyze this trade-off by studying 2-and 3-connected graphs to be used as WDM (Wavelength Division Multiplexing) networks physical infrastructure. The experiments show how the way links are distributed to interconnect the nodes has a significant impact on the cost and availability of the network.