Traffic Grooming for IP Multicast over WDM Networks Using Light-Path and Light-Tree Schemes

In this paper, we consider one light-path based and two light-tree based traffic grooming schemes for supporting IP multicast services. We made performance comparisons for call blocking probability and bandwidth blocking probability on those schemes. Simulation results reveal that light-path scheme has lower blocking probability and less consumes bandwidth consumption as IP demand volumes are small (i.e., several Megabit/sec). On the other hand, Light-tree based schemes have better performance as the IP demands become high. We conclude that the selection of grooming strategies should take the volume of demands of the provided services into account and the results in this work can provide a basic guideline for grooming strategy selection.