基于OSPF和BGP的网络拓扑实时发现系统的设计

Design of real-time network topology discovery system based on OSPF and BGP

针对当前包括了多个自治系统(AS)的大型网络拓扑结构实时绘制遇到的困难,提出了一个基于OSPF协议和BGP协议的快速拓扑发现系统的设计方法。该系统对AS之间发送的BGP报文和AS内部的OSPF报文进行采集,对采集的报文进行分析,能够迅速、高效、准确地反映出全网的拓扑结构及其实时变化。对系统报文采集,报文分析,图形保存等关键技术做了讨论。

A real-time topology discovery technique based on Open Shortest Path First （OSPF） protocol and Border Gateway Protocol （BGP） was put forward to solve the difficulties in multi AS topology discovering. The system gathered the BGP message that transfer within AS, and the OSPF message that transfer in AS. Through analyzing these messages, system can describe the state and change of multi AS topology rapidly, accurately and efficiently. Technologies of message gathering, message analyzing and topology graphics saving were discussed.