新一代MSTP的关键技术和发展方向

目前,基于同步数字体系(SDH)的多业务传送平台(MSTP)在国内已成为城域汇聚层和接入层的主流技术。为了进一步增强数据处理能力,更好地与数据网络结合,新技术和新功能层出不穷。随着通用成帧规程(GFP)、虚级联(VCat)、链路容量调整(LCAS)、弹性分组环(RPR)、多协议标签交换(MPLS)、自动交换光网络(ASON)等技术国际标准的相继推出,新一代MSTP设备将逐步采用这些核心技术,面对新时期城域网IP业务大量兴起,MSTP逐步从简单透传、汇聚、共享发展到带宽管理,具备面向数据优化的传送能力。文中对新一代MSTP的关键技术进行讨论,着重分析这些新技术在MSTP中的功能和应用,并探讨新一代MSTP的发展方向。

The Key Techniques and Development of New Generation MSTP

Nowadays, SDH-based MSTP(multi-service transport platform) has become the predominant technique in the metropolitan optical network. However, to enhance its capability of data processing and to combine with current data networks better, new techniques should be applied. As the technologies of GFP, VCat, LCAS, RPR, MPLS and ASON have developed quickly, next-generation MSTP will adopt them gradually. This article will discuss these key techniques of new generation MSTP, especially in terms of their functions and applications in MSTP. Furthermore, we will have a view on the development of new generation MSTP.