基于层叠模型的动态组播业务疏导算法

Dynamic multicast traffic grooming algorithms under the overlay model

流量疏导对于提高波分复用网络的利用率具有重要的意义。文章基于层叠模型的IP over WDM网络结构,研究了动态组播业务疏导问题,给出了两种动态组播业务疏导方法。仿真结果显示,在IP层和光层都计算最短路径来选取最短路径组建组播树的算法能够获得更低的阻塞率。

Traffic grooming is important for improving the WDM network efficiency. We studied the dynamic multicast traffic grooming for IP over WDM networks under the overlay model. We proposed two algorithms and studied them with simulation. The simulation results show that the algorithm 2, which calculates shortest path both in IP layer and in optical layer and selects the shortest one, can achieve lower blocking ratio.