一种弹性分组环技术的实现方案  

Implementation Scheme for a Class of Technologies of Resilient Packet Ring

作　　者：李长礼[1] 吴绍琪[1] 

机构地区：[1]上海交通大学

出　　处：《微型电脑应用》2011年第8期28-31,73,共5页Microcomputer Applications

摘　　要：弹性分组环技术是一种融合了SDH和以太网技术优势的新型媒体访问控制(MAC层)技术。弹性分组环兼具以太网的经济性、易扩展性和SDH的快速保护倒换、传输可靠特性,同时拥有空间复用、带宽动态分配、支持业务分级、公平算法控制等特性,在城域网方面拥有十分广泛的应用前景。介绍了弹性分组环技术的出现背景、基本技术原理和关键技术,针对城域网范围的工业控制网络,给出一种简单经济灵活的弹性分组环技术实现方案,并对一些关键模块的实现进行了详细阐述。Resilient Packet Ring is a new technology for MAC layer which combines advantages of SDH and Ethemet technology.RPR combines the economic efficiency, extensibility of Ethernet and fast protection switching, transmission reliability features of SDH technology. In addition, it is provide with dynamic bandwidth allocation, spatial reuse, fairness, service classing and other new features. In this article, the background, fundamental principle and key technologies of RPR will be introduced. A low-cost, simple flexible implementation scheme of RPR designed for indusial control network with an extent as metropolitan area network will be provided .And key modules of this scheme will be stated in detail.

关 键 词：弹性分组环 城域网 双环拓扑 空间复用 公平算法 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]