摘要
文章首先介绍了网络生存性的重要意义及业务恢复时间的要求,分析了SDH网保护方式的分类与特点,针对各种常用自愈环结构进行了分析比较,并讨论了SDH网的恢复问题,特别是网络恢复控制方法、网络恢复级别以及各种保护/恢复方法的比较和协调。
The paper describes the impor- tance of network survivability and the requirement for service restora- tion time. Then the protection tech- nique category and characteristics for SDH network are analyzed. The comparisons among popular differ- ent self-healing ring structures are also presented. The issue concern- ing the restoration for SDH network is also discussed. The emphasis is put on the control methods of net- work restoration, restoration levels and the comparison and coordina- tion among different protection and restoration techniques.
关键词
SDH网
网络保护
网络恢复
网络生存性
SDH network
Network protection
Network restoration
Network survivability
