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为了对光交叉连接 (OXC)节点中的光通道进行路由控制 ,以及对波分复用 (WDM)光网络的性能和节点运行状况进行实时监测 ,文章采用了模块化结构的设计方法 ,针对自行研制的两条输入链路 8个波长通道的 OXC节点 ,实现了节点控制管理单元的硬件平台和软件平台。在 WDM光实验网中 ,利用节点控制管理单元的自愈控制功能 ,实现了线路保护倒换和二纤单向环形网络复用段的自愈保护。实验表明 ,当网络发生故障时 ,通过线路保护倒换 ,节点可以在小于 4m s的时间内自动完成从工作链路到保护链路的切换 ,符合 ITU - T建议的要求。
In order to control the optical channels in optical cross-connect (OXC) nodes and to monitor the performance of WDM optical networks and node health in real time, the article adopts the design method of modular structure, Developed OXC nodes of 8 wavelength channels of the two input links, and realized the hardware platform and software platform of the node control and management unit. In the WDM optical experiment network, the self-healing control function of the node control management unit is used to realize the self-healing protection of line protection switching and two-fiber unidirectional ring network multiplex section. Experiments show that in case of network failure, the node can automatically switch from working link to protection link in less than 4m s by line protection switching, which meets the ITU - T recommendations.