Abstract: As for the real-time problem exists in the redundancy network, this paper presents a fast network topology discovery method based on Parallel Redundancy Protocol(PRP). According to the network requirements, a request packet is sent by the network management system, the agent is sending the topology discovery packet when it receives the packet. Based on the results processed by the network management system, people can obtain the network topology. The method is demonstrated by the platform of OMNET++, results show that time of the network topology discovery is about 60 ms, and this method is compatible with Simple Network Management Protocol(SNMP).

Key words: redundancy Ethernet, Parallel Redundancy Protocol(PRP), topology discovery, end system, management end

摘要： 针对冗余以太网网络拓扑发现的实时性问题，提出一种基于并行冗余网络协议的网络拓扑结构快速发现方法，包括在网络管理端根据网络需求，发送拓扑发现请求报文，端系统设备在接收到请求之后周期性地向管理端发送拓扑发现报文，管理端根据接收到的报文信息进行运算，从而得到网络的拓扑结构。通过OMNET++网络仿真软件进行仿真验证，结果表明，该方法的网络拓扑构建时间维持在 60 ms，并且实现了与简单网络管理协议的兼容。

关键词: 冗余以太网, 并行冗余协议, 拓扑发现, 端系统, 管理端

CLC Number: 

• TP393