下一代智能调度集中系统核心网络组网方案研究  

Research on the Core Network Construction Scheme of the Next Generation Intelligent CTC System

作　　者：周学兵 韩熠 陈梵 马钰昕 ZHOU Xuebing;HAN Yi;CHEN Fan;MA Yuxin

机构地区：[1]卡斯柯信号有限公司,上海市铁路智能调度指挥系统工程研究中心,上海200071

出　　处：《铁道通信信号》2023年第3期28-35,共8页Railway Signalling & Communication

摘　　要：从下一代智能调度集中系统核心网络组网的实际需求出发,研究核心网络技术特点,提出基于VxLAN协议的核心网络组网方案。物理拓扑上,采用Spine-Leaf结构建立低时延、高可靠、无阻塞的线性转发网络,实现数据的高效转发;逻辑架构上,利用虚拟化技术复用数通、网络安全等基础设备,实现多业务系统融合组网。通过实验室测试,验证了该组网方案能够与既有核心网络良好兼容,满足24 h不间断运营场景下调度集中系统核心网络渐进式倒切或者一次性倒切需求。同时,采用VxLAN架构消除了二层网络风暴问题,通过横向虚拟化和双路由反射器机制提升了核心网的可用性和灵活性,降低了现场施工难度及建设、运营成本。Based on the actual requirements of the core network construction of the next-generation intelligent CTC system,the technical characteristics of the core network are studied,and the core network architecture of VxLAN-based next-generation intelligent CTC system is proposed.In physical topology,Spine-Leaf structure is used to build a low-delay,high-reliability and nonblocking linear network,which realizes efficient data forwarding.In logical architecture,data communication devices,network security devices and other basic equipment could be reused by virtualization technology,realizing unified and integrated networking of multi-service systems.Through laboratory tests,it is verified that the networking scheme can be well compatible with the existing core network and meet the requirements of progressive or one-time switchover of the core network of the centralized dispatching system under the 24-hour uninterrupted operation scenario.Meanwhile,the adoption of VxLAN network architecture eliminates the two-layer network storm problem,improves the availability and flexibility of the core network through horizontal virtualization and the use of dual route reflector mechanism,which effectively reduces the difficulty of on-site construction and the cost of construction and operating.

关 键 词：调度集中系统 VxLAN协议 核心网切换 数据中心 网络虚拟化 

分 类 号：U285.4[交通运输工程—交通信息工程及控制]