On Determining the Optimal Optical Reach in Multilayer Networks

In recent years the traffic on the core almost 24% year. networks has been growing by almost 24% every year. To restrain the cost of the network infrastructure the creation of increasingly efficient planning tools that minimize the quantity of resources to be deployed is crucial. crucial. In this paper we present a multilayer planning tool paper IP-overbased on heuristic for IP-over-WDM networks and then formulation. we validate it through a MILP formulation. During the planning of the IP layer we consider the topology and cost of the WDM layer as well as the feasibility of optical connections through the introduction of the optical reach parameter. reach", We show that there exists a "required reach", minimizing corresponding to the optical reach minimizing the overall cost. traffic network cost. We study how the traffic and cost influence hypotheses influence the value of the required reach and show that some of them can double or triple the required reach, depending on the chosen topology.