网络拓扑发现的算法和实现技术是衡量网络管理系统性能的一个重要方面，基于大多数网络设备都支持的SNMP协议，设计了一个网络拓扑自动发现系统的算法。该算法可发现指定深度网络内所有路由设备及指定子网内所有活动主机，并对一些关键技术的实现细节进行了分析-Algorithm and Realization of network topology discovery technique is to measure network management system performance is an important aspect, based on a majority of network devices to support the SNMP protocol, the design of a network topology discovery system algorithm. The algorithm can find all routing devices in the depth-specified network and all active hosts in the specified subnet, and some key technologies were analyzed the implementation details