On the grooming of multicast traffic in WDM networks

In this paper we consider the optimal dimensioning of optical networks for multicast traffic grooming problems on WDM networks under two practical scenarios. In both cases, for each multicast session the destination set consists of two disjoint subsets. In the first scenario only one subset of each multicast session must be accommodated while the other subset can only be accommodated if this results in no additional cost. In the second case, both subsets of each multicast session must be accommodated. However, each subset has different bandwidth requirements. We develop optimal and heuristic solutions for both the cases.