省级气象广域网网络优化的设计与应用  

Design and Application of Network Optimization of Provincial-Level Meteorological WAN

作　　者：许玮[1] 王迎迎[1] 秦运龙[1] 杨维发 李鑫 

机构地区：[1]湖北省气象信息与技术保障中心,武汉430074 [2]湖北省荆门市气象局,荆门448000

出　　处：《气象科技》2016年第3期358-362,共5页Meteorological Science and Technology

摘　　要：目前湖北省气象地面宽带网省—地—县3级结构中,省局与各市(州)局间采用单条专线连接,手动VPN(Virtual Private Network)拨号线路备份的传输方式,这种传输方式不足以保证数据传输的可靠性。现设计新增一条专线,实现省到地的双线路备份。同时,增加一台省端网络互联交换机,升级地市端的网络互联路由器硬件,将数据划分为业务数据和视频会商两类,定义不同的传输方式。业务数据采用OSPF(Open Shortest Path First)动态路由方式进行传输,视频会商通过配置静态路由BFD(Bidirectional Forwarding Detection)联动的路由方式进行传输,并通过QoS(Quality of Service)保证其4 Mb/s的带宽,从而实现省到地数据业务更合理可靠地传输。At present,the provincial-level meteorological WAN of Hubei is through one telecommunications line to realize communication between provincial and municipal levels,and uses a dial-up VPN line to make backup.It is not enough to guarantee the reliability of data transmission.So a special line is designed to realize double-line backup.At the same time,a switch is added for provincial network interconnection,to replace the router for municipal network interconnection.The data are divided into two classes：convention data and video data.Different transmission modes are defined.Convention data adopt the OSPF dynamic routing method for transmission,and video data adopt the static routing BFD linkage for transmission,to guarantee the 4 Mb/s bandwidth by QoS.It can realize reliable and more reasonable data transmission between provincial and municipal levels.

关 键 词：数据传输 路由优化 BFD OSPF QOS 

分 类 号：TP393.2[自动化与计算机技术—计算机应用技术]