FDDI(fiber distributed data interface)光纤分布式数据接口网络,它是根据FDDI协议集,研制而成。其拓扑结构为双环型,传输媒体为光纤的高速局域网络,传输速率可达100Mb/s,传输媒体采用多模光纤时,两个站点之间的最大传输距离为2公里;传输媒体采用单模光纤时,两个站点之间最大距离可达数10公里以上。FDDI网络的主要特点是:具有实时及优先权访问功能,可靠性高,综合服务能力强等,但对安装维护技术的要求也高。 FDDI (fiber distributed data interface) fiber distributed data interface network, which is developed according to the FDDI protocol set. Its topological structure is a double loop type, the transmission medium is a high-speed local area network with optical fiber, the transmission rate can reach 100Mb / s, the maximum transmission distance between two sites when the transmission medium adopts multimode optical fiber is 2km; Optical fiber, the maximum distance between the two sites up to several kilometers more than 10 km. The main features of the FDDI network are: real-time and priority access, high reliability, comprehensive service capabilities, etc., but also require high installation and maintenance techniques.