SDH自愈环的跨距和环路保护转换分析

An Analysis on the Span and Ring Protection Transform of SDH SHR

叙述了提高网络,尤其是SDH自愈环的可用性和生存性的措施和方法。介绍了SDH自愈环的结构及其保护机制、保护转换的指令与协议。最后分析比较了几种常见的SDH自愈环。

This paper describes the measures and methods to improve the SDH SHR＇s usability and viability. It introduces the structure, protective institutions, APS dictate and protocols and at last, compares several kinds of common SDH SHR.