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随着用户对数据/IP业务和带宽需求的增加,以及近几年来骨干网容量和接入网容量的大幅度提升,城域网逐渐成为网络容量的瓶颈,同时也促使WDM技术从长途骨干网向城域网、接入网领域扩展,并成为目前4种主要的城域网络解决方案之一。4种城域网络方案分别是基于SDH的多业务传送平台(SDH-MSTP)解决
With the increase of data / IP services and bandwidth requirements, and the substantial increase of backbone network capacity and access network capacity in recent years, metropolitan area network has gradually become the bottleneck of network capacity and has also prompted WDM technology to migrate from long-distance backbone network To metropolitan area network, access network expansion, and become the current four kinds of major metropolitan area network solutions. Four metro network solutions are SDH-based multi-service delivery platform (SDH-MSTP) solution