省级电信运营商IPTV CDN网络承载方案

Provincial Telecom Operator IPTV CDN Network Bearing Scheme

CDN即内容分发网络,是整个IPTV系统的关键。CDN主要负责流媒体编码解码、集中存储、分布存储、业务管理和服务门户提供等功能。其狭义上可以理解为各种流媒体服务器、存储系统、管理系统的数据中心,广义上包括为数据中心提供互联的承载网。从IPTV的业务模型出发,着重讨论了省级CDN数据中心互联承载网的部署方案,分别阐述了可靠性、QoS、网络安全。

CDN,the content distribution network,is the key to the whole IPTV system.CDN is mainly responsible for streaming media coding and decoding,centralized storage,distributed storage,business management and service portal.In a narrow sense,it can be understood as the data center of various streaming media servers,storage systems and management systems,and broadly includes the bearer network that provides interconnection for the data center.Starting from the service model of IPTV,the deployment scheme of interconnected bearer network of provincial CDN data center is discussed emphatically.Reliability,QoS and network security are expounded respectively.