战术互联网中的分布式网络拓扑发现研究

摘要

战术互联网通信由较窄的无线通信和较宽的方舱内通信共同组成,这使传统的拓扑发现过程中数据丢失严重、发现效率低,对此提出了一种高效合理的分布式拓扑发现算法.分析了特制网络核心设备——综合路由交换机及其构建的战术互联网通信模型.采用基于A-gent管理域拓扑发现和全网拓扑发现相结合的分布式拓扑发现模式.用优先级手动调整与自适应调整相结合的方式对全网拓扑发现进程进行调度.由于拓扑发现对无线通信带宽占用减少到最小,保证了网络拓扑结构获取的及时性和对网络无线带宽占用的合理性.实验结果表明分布式拓扑发现算法能够针战术互联网的通信特点,高效地实现对网络的拓扑发现.%The tactical internet communication is composed of narrow radio communication and wide LAN communication in cabin, which results in data missing by using the general topology discovery method. To overcome the problem, a distributed topology discovery method is presented. Based on the tactical internet communication model and the router-switch which is the key equipment made by a special institute, tasks of the topology discovery in both agent management domain and the whole network are assigned rationally. It reduces occupation of radio bandwidth on topology discovery considerably. Collecting the topology information in time and using the radio bandwidth rationally are achieved by adjusting process priority of topology discovery in whole network with manual regulation and self-adaptation regulation. The experiment results indicate that the new method is effective in the realization of topology discovery.