基于单节点故障的IP Over WDM网络生存性映射算法

摘要

在IP Over WDM网络中， WDM层的一条物理链路往往对应多条IP层逻辑链路，无论采用何种机制，都不允许WDM层的故障导致上层逻辑拓扑变的不连通，因此，解决IP Over WDM的生存性映射问题便显得尤为重要。本文在现有IP Over WDM静态拓扑映射算法的基础上提出一种基于单节点故障的映射算法，目的是在WDM层出现单节点故障后， IP层逻辑拓扑不被分割为多个不连通的部分，以保证IP拓扑的连通性。%In IP Over WDM networks, a physical link layer always has multiple logical links, regardless of the mechanism, the logical topology is not allowed to become unconnected as the fault of WDM layer. Therefore, solving the survival of IP Over WDM mapping is particularly important. This paper presents a mapping algorithm based on single-node failure based on the existing IP Over WDM static topological mapping algorithm. The objective is to guarantee the connectivity of IP topology when WDM layer’s single-node failure.