为解决层叠IP/WDM(wavelength divisionmultiplexing)网络中标签交换路径(label switched path,LSP)梳理效率低下问题,提出了一种基于“可能邻居”概念的光通路物理跳距评估方法。该方法通过使用节点对的单跳梳理概率信息评估光通路占用的波长资源量,优先选择可能的短距光通路承载LSP连接。仿真结果表明,该方法能有效地评估光通路的物理跳距,减少LSP连接平均占用的光层资源,显著降低请求阻塞率,提高网络资源利用效率。 In order to solve the problem of inefficient combing of label switched paths (LSPs) in a layered IP / WDM (wavelength division multiplexing) network, a physical hop distance evaluation method based on the concept of “possible neighbor” is proposed. This method evaluates the wavelength resource occupied by the optical path by using the single-hop combing probability information of the node pair, and preferentially selects the possible short-path optical path to carry the LSP connection. The simulation results show that this method can effectively evaluate the physical hop distance of optical path, reduce the optical layer resource occupied by LSP connection on average, significantly reduce the request blocking rate and improve the utilization efficiency of network resources.