基于分布式的多级网络拓扑发现研究

文章提出了一种分布式的多级网络拓扑发现方案．将拓扑发现从网络管理角度划分为路由器级和子网级两个层次，分析了两个层次之间的衔接方式；并将路由器级、子网级拓扑发现方法相结合．找出了网络层与链路层之间的拓扑关系，实现单级网络拓扑发现。上级管理中心对本级网络拓扑信息以及所有获取的下级网络拓扑信息进行处理，实现多级网络的拓扑发现，从而以拓扑地域的角度将拓扑发现过程分布化。同时利用XML数据对象作为分布式算法中的数据对象对网络拓扑进行了分布式的计算。

Research of Hierarchical Network Topology Discovery Based on Distribution

This thesis provides a strategy on Hierarchical Network Topology Discovery based on Distribution, Topology discovery is divided into two levels, that is, the Router-Level and Subnet-Level, in terms of network management, and analyses the way of linking up between the two levels. Then by combining Router-Level Topology Discovery technology and Subnet-Level Topology Discovery technology,this thesis discovers the topology relationship between Network-layer and DataLink-layer and implements entire single-layer network topology discovery. The upper-layer management centre disposes of the information of current-level and all next-level network topology captured, therefore realizes hierarchical network topology discovery and the course of topology discovery is distributed on topology geography prospective. This thesis accesses distributed computation upon network topology by using the technology of XML data object.