弹性分组多环互连网络的设计与实现

IEEE802．17标准中建议用桥接方法来连接多个弹性分组环(RPR)。然而，桥接方法无法保留基于单环架构而设计的技术优势。通过对标准化的RPR帧格式进行扩展定义，并基于此提出用交叉连接节点互连多个RPR网络，可以克服桥接方法的不足。本文对交叉连接节点的MAC结构、跨环帧转发以及多环自动拓扑发现等进行了设计。研究表明，本文设计方法可以保留单环架构设计中的技术优势。

Design and Implementation of Interconnected Resilient Packet Rings

In IEEE 802.17 draft standard, bridging is suggested to connect multiple resilient packet rings (RPRs). However, it is demonstrated that bridging technology may not be a feasible solution. To construct interconnected RPRs and solve bridging related issues, a new kind of RPR nodes, namely RPR X nodes, is introduced to interconnect multiple RPR networks. The extended definitions of standard RPR frame, transmission technique and multi ring based auto topology discovery, which underlie the interconnected RPRs, are described and analyzed. The research shows that the proposed methods can overcome the shortcomings of connecting multiple RPRs by bridging, and inherit the technique advantages designed for RPR.