气象宽带网络自动化天地互备系统设计与实现-《计算机技术与发展》

文章信息/Info

Title:: Design and Implementation of CMANet Automatic Satellite-earth Mutual Backup System Based on Service Type Identification

Author(s):: LIU Ran; WANG Tao; HE Heng-hong; National Meteorological Information Center,Beijing 100081,China

Keywords:: satellite-earth mutual backup; service type; automation; satellite communication; high availability

摘要:: 全国地面通信网络是气象部门不可或缺的关键通信基础设施,因此保障该线路的高可用至关重要。介绍了中国气象局地面宽带网络自动化天地互备系统的设计与实现。该系统采用了服务类型识别技术,可根据特定的服务类型标记触发卫星链路的自动建立及释放。同时,在对地面线路状态自动检测的基础上,实现了全网路由的动态更新和智能选择,解决了传统备份方案需要人工判断和手工干预的问题,还兼顾了气象部门卫星应急通信业务的需要。通过在实际业务中的检验,当地面线路因灾全部中断时,该系统的自动备份效果相较于气象部门传统的备份方式,在切换的及时性和自动化程度方面都有着十分明显的提高。同时卫星线路只有卫星转发器这一个中间节点,其安全性和可靠性也更高,能够很好地满足业务要求,对提升国省气象部门间通信网络的可靠性具有重要意义。

Abstract:: CMANet is a key communication infrastructure for the meteorological department,so it is crucial to ensure the high availabilityof the line. We introduce the design and implementation of CMANet automatic satellite - earth mutual backup system of ChinaMeteorological Administration. The system adopts service type identification technology,which can trigger the automatic establishmentand release of satellite link according to specific service type marks. At the same time,based on the automatic detection of the terrestriallink state,the dynamic update and intelligent selection of the whole network route are realized, which solves the problems that thetraditional backup scheme needs manual judgment and manual intervention,and also takes? into account the needs of satellite emergencycommunication service of meteorological department. Through the test in the actual service,when all the terrestrial link are interrupteddue to disasters,the automatic backup effect of the system is significantly improved in the switching timeliness and automation comparedwith the traditional backup mode of the meteorological department. At the same time,the satellite link only has the intermediate node ofsatellite transponder,which can meet the service requirements with higher security and reliability. It also improves the reliability of thecommunication network between national and provincial meteorological departments significantly.