电力CDN业务需求分析及网络体系架构研究

doi:10.11959/j.issn.1000-0801.2015139

Abstract

Abstract:

During the“Twelfth Five Year Plan”，with the continuous deepening development of the SGCC information s ystem，the number of large management information system of one-1evel deployment continues to increase，wide coverage，1arge number of users，and new technologies such as the software-hardware resource pool and the cloud computing，brings new challenge to the data network. CDN（content delivery network）is a virtual network consists of the node server group distributed in different regions. CDN push/pull the information resources to the network edge，allow customers to access content faster. A profound analysis of the demand for the electric power information business accelerating，power CDN network load requirements，and key technology，was given. Based on the electric power information system architecture and the electric power data network，the electric power CDN network system was put forward，which had two levels network architecture and three layers CDN network storage architecture. The CDN network safety protection requirements were analyzed；the electric power CDN control platform and the electric power CDN test bed were designed and developed.

Key words: content delivery network, network architecture, safety protection, test bed

Yirong Wang,Sining Wang,Ying Zou,Botao Yu. Research on Business Requirement Analysis and Network Architecture of CDN for Power Grid[J]. Telecommunications Science, 2015, 31(5): 150-757.

Figures/Tables 11

References 11

1	张健，文爱军 . 国家电网公司信息化建设一级部署方案. 电力信息化， 2011（4） Zhang J ， Wen A J . First-order deployment scheme of information construction in state grid corporation. Electric Power IT， 2011（4）
2	马季春，杨巧霞 . 内容分发网络技术浅析. 邮电设计技术， 2004，（3） Ma J C ， Yang Q X . Simple analysis of CDN technology. Designing Techniques of Posts and Telecommunications， 2004（3）
3	雷凯，袁杰 . 命名数据网络内容分发机制研究与探讨. 电信科学， 2014，30（9）：27～36 Lei K ， Yuan J . Content distribution mechanisms of named data networking. Telecommunications Science， 2014，30（9）：27～36
4	李乔，何慧，张宏莉 . 内容分发网络研究. 电子学报， 2013，41（8） Li Q ， He H ， Zhang H L . Research on content delivery networks. Acta Electronica Sinica， 2013，41（8）
5	韩晓云，黄灿，张莫等. 一级部署系统性能优化研究. 电力信息与通信技术， 2013（7） Han X Y ， Huang C ， Zhang M ， et al. Research on optimization of performance centralized deployment-based information system. Electric Power ICT， 2013（7）
6	Kangasharju J ， Roberts J ， Ross K W . Object replication strategies in content distribution networks. Computer Communications， 2002，25（4）：376～383
7	Ryoo J ， Panwar S S . File distribution in networks with multimedia storage server. Networks， 2001，38（3）：140～149
8	Left A ， Wolf J L ， Yu P S . Replication algorithms in a remote caching architecture. IEEE Trans on Parallel Distributed Systems， 1993，11（4）：1185～1204
9	唐红喜，宋茂强，赵方 . CDN中的内容分发策略研究及仿真分析. ， 2008 Tang H X ， Song M Q ， Zhao F . Content delivery tactics research and simulation analysis of CDN. ， 2008
10	魏薇，魏凯 . CDN安全防护的新标准. 中国计算机报， 2011（48） Wei W ， Wei K . CDN’s new security protection standard. China Information World， 2011（48）
11	张棪，周旭，唐晖等. 面向移动互联网的融合内容分发网络总体架构设计. 电信科学， 2011，27（1）：16～23 Zhang Y ， Zhou X ， Tang H ， et al. Architecture design of the converged content distributio n network for mobile internet. Telecommunications Science， 2011，27（1）：16～23

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业务类型		加速服务类型			业务系统
业务类型	网页	流媒体	文件下载	应用协议	业务系统
管理	√				SG-ERP人力资源、95598、基建管理、协同办公等
	静态页面为主；少量动态页面；访问频繁
视频监控、网络教学		√	√	√	电力交易市场系统、农村用电管理系统、网络大学等
决策系统、规划	√			√	协同办公等
平台类实时类	√√		√	√	电子商务等电力交易市场系统电能质量监测系统、95598、灾备数据等
	动态页面为主
数据类		√		√	漏洞补丁、病毒库系统、电网GIS地图数据分发、灾备数据等

业务特性	加速策略
静态页面	CDN中心服务器将需要缓存的静态页面发送至全网的边缘节点，用户访问时由全局负载均衡器将请求分散至最近的边缘节点
动态页面	由中心服务器算法决定是否加速，对高热度内容设置缓存，动态替换原有页面实现加速
流媒体	用户发送视频播放的请求，CDN中心服务器则采用推送方式，接收到用户请求后，主动将视频内容下发，并通过反向代理将请求地址转换为缓存节点，实现视频加速
文件传输	CDN系统把文件缓存到离用户较近的前向代理，从源服务器缓存这些可能被共享的文件，当客户端访问文件时，用户直接从前向代理服务器访问。当源端服务器的请求数量过多时，可以在源服务器端架设反向代理，通过负载均衡技术平衡源端服务器的访问
应用协议	从传输层协议优化和应用层协议优化考虑，采用调节协议参数、改进拥塞控制算法等策略，对协议进行适应性改进，应用层协议优化加速可以采用的策略包括网间加速、并行数据传输等

功能	技术指标
仿真节点规模	≥1 000 个
并发用户数	≥500个
流量峰值	≥10 Gbit/s
请求响应时间	≤1s
缓存总数据量	≥10 TB
缓存请求命中率	≥80%
访问提速	≥30%
视频直播、点播	网络访问速度提升2倍以上
网络文件传输的加速	文件下载速度提升2倍以上
CDN实验床运行	7×24 h稳定运行

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Research on Business Requirement Analysis and Network Architecture of CDN for Power Grid

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