多域光网络中的动态RWA算法研究

Study on dynamic RWA algorithm in multi-area optical network

随着光网络规模的不断增大,下一代智能光网络将被划分为多个路由域进行分布式管理。由于在这种具有分布式特点的多域光网络中,每个路由域只了解本地子网内的拓扑和资源信息,因此以往光网络中已有的基于全网信息的动态RWA算法将不在有效。文章首先分析了多域光网络中的动态RWA问题,然后针对多域网的特点对已有的RWA算法进行了修改,并在给定的多域光网络模型中对该算法进行了仿真研究。结果表明:在多域网络环境下,以往的动态RWA算法急需改进。

In next generation optical network, the network will be paitioned into several routing area for distributed network management. Under this circumstance, some dynamic RWA algorithms that are tradiitonally considered as effective algorithms perform poorly because the precise globale network state information is not available. In this paper, the problem of RWA in mult-area optical network is studied, and the performance of a modified RWA algorithm are analyized compute simulation based on a simple multi-area network model. The results indicate that the RWA algorithms in currrent optical networks need to be improvend so that they can be used in multi-routing area optical network.