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我国处于自然灾害频发地带,从2008年汶川特大地震到2013年4.20芦山地震来看,传送网的通信保障能力并不乐观,灾害发生时,各级政府和部门信息不通畅,严重影响灾情的及时掌控和救灾速度。目前本地传送网系统的网络结构存在以下缺陷:1、核心层业务单平面承载,业务安全性不足郊县汇聚层节点环形组网,无第三条光缆路由(直达或迂回),某个或某些汇聚节点双侧光缆出现故障时,汇聚节点成为孤岛;2、汇聚环
China is in a natural disaster-prone area. From the Wenchuan Earthquake of 2008 to the 4.20 Lushan Earthquake of 2013, the communication network protection capability of the transmission network is not optimistic. When the disaster happened, the information of all levels of government and departments was not smooth and seriously affected the disaster Timely control and disaster relief speed. At present, the local transport network system has the following defects in the network structure: 1. The core business plane is flat and has insufficient service security. The ring network at the convergence node in the suburbs does not have a third optical cable route (direct or detour) Binding nodes on both sides of the optical cable fails, the aggregation node becomes an island; 2, aggregation ring