基于分布式SDN机动通信系统信息同步方法
Information Synchronisation Method for Mobile Communication Systems Based on Distributed SDN
朱宇昂 1张晨光 1李昌隆 1赵亚丽1
作者信息
- 1. 北京航天晨信科技有限责任公司,北京 102308
- 折叠
摘要
针对目前主流软件定义网络(Software Defined Network,SDN)控制器间信息同步方法的开销较高,超出基于分布式SDN的机动通信系统无线信道负载能力的问题,在平面型链路状态路由协议——开放最短路径优先协议(Open Shortest Path First,OSPF)的基础上提出一种可靠性较高、适应多信道共存、开销较低的信息同步方法,通过取消多区域机制避免节点机动性引起的OSPF协议区域混乱问题,简化软件处理流程,通过优化协议报文将OSPF协议由传统IP网络移植到SDN网络,通过精简报文长度、避免重复同步数据的方式降低信息同步开销.实验表明,上述信息同步方法能够在控制器之间准确同步网络信息,并且在机动通信系统规模为1:2:4 时,信息收敛过程仅产生平均每端口接收 0.721kB/s、转发 0.873kB/s的信息同步开销,匹配无线宽带平均 78.125kB/s、超短波平均 2.4kB/s的负载能力,满足基于分布式SDN的机动通信系统对信息同步方法的要求.
Abstract
To address the issue that the information synchronization overhead of the current popular Software De-fined Network(SDN)inter-controller information synchronization method is high and exceeds the wireless channel load capacity of the device,the paper proposes an information synchronization method that is more reliable,adapts to multi-channel coexistence,and has less information synchronization overhead.This method is based on the planar link-state routing protocol Open Shortest Path First(OSPF).This approach streamlines the software processing flow,eliminates the multi-area mechanism that causes the OSPF protocol area confusion caused by node mobility,adapts the OSPF protocol from traditional IP networks to SDN networks by optimizing protocol messages,and lowers informa-tion synchronization overhead by shortening message length and avoiding redundant synchronization data.The experi-ment demonstrates that the message synchronization technique can precisely synchronize data between controllers,and the message convergence process only generates an average message synchronization overhead of 0.721 kB/s per port received and 0.873 kB/s per port forwarded when the size of the mobile communication system is 1:2:4,matching the load capacity of 78.125 kB/s on average for wireless broadband and 2.4 kB/s on average for ultra-shortwave,meeting the requirements of the distributed SDN-based mobile communication system.
关键词
信息同步/机动通信系统/软件定义网络/开放最短路径优先Key words
Information synchronisation/Mobile communication systems/Software defined network/OSPF引用本文复制引用
出版年
2024
NETL
NSTL
万方数据