IP承载网CE的高可用系统方案研究  

Research on high availability system scheme of IP Bearer Network CE

作　　者：朱益佳 Zhu Yijia(China Mobile Group Zhejiang Co.,Ltd,Hangzhou Zhejiang,310006)

机构地区：[1]中国移动通信集团浙江有限公司,浙江杭州310006

出　　处：《电子测试》2020年第23期69-71,共3页Electronic Test

摘　　要：IP承载网是中国移动以IP技术构建的一张专网,用于承载对传输质量要求较高的业务(如软交换语音、视讯、重点客户VPN等),随着业务规模的不断扩大以及网络本身的不断发展,对网络本身的可靠性提出了更高的要求,尤其是对于IP承载网面向业务接入的CE路由器的高可用面临越来越大的挑战,现有IP承载网CE路由器拥有自身构造的电信级高可用之外,虽然已经实现成对CE互为主备容灾的方式承载业务,当出现单台CE路由器故障情况下业务一般能通过另一台CE绕转承载,从而实现业务不受影响。但是通过深入分析IP承载网的组网结构特点及风险,发现比如:当发生CE路由器的互联端口异常/设备单板故障/传输通道故障/传输尾纤故障等场景时,CE路由器仍然存在单节点失效甚至成对CE路由器同时退服的风险,另外,现有CE的带外应急手段缺失、备件管理无序等也同样制约了CE的高可用性。本文从IP承载网的组网架构、应急手段、备件储备等方面提出针对性的高可用网络的建设方案,显著提升了网络承载的高可用性。IP Bearer Network is a private network constructed by China Mobile based on IP technology,which is used to carry services with high transmission quality requirements(such as Softswitch voice,video,key customer VPN,etc.),with the continuous expansion of business scale and the continuous development of the network itself,higher requirements are put forward for the reliability of the network itself,especially for the CE path of IP Bearer Network for service access The high availability of the router is facing more and more challenges.The existing IP Bearer Network CE router has its own carrier level high availability.Although it has implemented the way of mutual primary and backup disaster recovery of paired CE,when a single CE router fails,the service can generally be carried around by another CE,so that the service is not affected.However,through in-depth analysis of the network structure characteristics and risks of IP Bearer Network,it is found that when the interconnection port of CE router is abnormal/equipment board failure/transmission channel fault/transmission tail fiber fault,CE router still has the risk of single node failure or even simultaneous withdrawal of CE router.In addition,the existing CE out of band emergency measures are missing,and spare parts management is out of order It also restricts the high availability of CE.This paper puts forward the construction scheme of high availability network from the aspects of networking architecture,emergency means and spare parts reserve of IP Bearer Network,which significantly improves the high availability of network bearer.

关 键 词：高可用 组网结构优化 带外网管 

分 类 号：TN915.1[电子电信—通信与信息系统]