城域网新解决方案及比较

New Metropolitan Area Networks Solutions and Comparison

首先给出对下一代城域网的要求,接着重点阐述了城域网的三种新方案:吉比特以太网,基于标签的光突发交换(LOBS)及弹性分组环(RPR);并分析各种技术的优缺点。

First, we give the basic re-quirements for the next generationMetropolitan Area Network (MAN).Thenemphases will be put on char-acteristics and applications of majorthree solutions such as Gbit Ethernet,Labeled Optical Burst Switching(LOBS) and Resilience Packet Ring(RPR). At last, we evaluate theirperformances.