双端口ODUk SNCP级联机制及应用分析

The application analysis and mechanism of the dual port ODUk SNCP cascading

传送网作为通信网最基础网络,其可靠性关乎整个通信网络安全。而传送网本身具有分层特性,最上层通道层承载业务,其任何一处故障都将影响业务性能。当前传送网主要组网技术是OTN,通道层保护主要采用ODUk SNCP方式。网络中端到端电路采用分段ODUk SNCP时,段与段间采用单端口对接,没有保护,当出现故障时业务中断。为规避此类风险,本文就双端口ODUk SNCP级联技术的出现背景、工作机制、现网应用及其关注点进行分析讨论。

As the most basic network of communication network,the reliability of transport network is related to the security of the whole communication network.The transport network itself has layered characteristics.Services are carried by the top channel layer,in which any fault will affect the performance of services.Now ODUk SNCP is mainly adopted for channel layer protection in OTN that is the main networking technology of transport network.In the present network when the end-to-end circuit adopts segmented ODUk SNCP,the single port connect is adopted between segments without protection,and services are interrupted in case of faults.In order to avoid such risks,this paper presents the background,working mechanism,network application and concerns of dual port ODUk SNCP cascading technology.