基于BIERv6的组播VPN实现研究  

Implementation of Multicast VPN Based on BIERv6

作　　者：赵新雨 汪学舜 李野 张钊[2] ZHAO Xinyu;WANG Xueshun;LI Ye;ZHANG Zhao(Wuhan Research Institute of Posts and Telecommunications,Wuhan,430074,China;Fiberhome Communication Technologies Co.,Ltd.,Wuhan,430074,China)

机构地区：[1]武汉邮电科学研究院、网络产出线协议软件开发部,武汉430074 [2]烽火通信科技股份有限公司,武汉430074

出　　处：《网络新媒体技术》2023年第1期28-37,61,共11页Network New Media Technology

摘　　要：BIERv6组播技术结合了IPv6和BIER的优点,将BIER头封装在IPv6扩展报文头中,基于IPv6单播地址实现组播复制、跨域转发等功能。本文研究通过组播协议转发表和BIERv6隧道的转发方案进行设计,实现控制平面和转发平面支持BIERv6;通过BIERv6承载PMSI隧道实现组播VPN跨域传播的方式,能够更有效地实现数据面监控,提升数据传输质量和稳定性。实验表明,设计的BIERv6隧道实现新型组播传输可在设备上高效应用,并能有效应用于IPTV场景。通过TestCenter仪表打流对数据报文进行分析,通过定义数据结构实现数据传递,并结合设计方案在设备上的应用试验,对组成员加入请求时间和网络时延进行分析,得到时延差在0.5 ms以内,基于BIERv6技术的组播VPN通信基本不受网络负载的影响,网络传输更为平稳。BIERv6 multicast technology combines the advantages of IPv6 and BIER,encapsulates BIER header in IPv6 extended packet header,and implements multicast replication and cross-domain forwarding based on IPv6 unicast address.This paper studies the design of multicast protocol forwarding table and BIERv6 tunnel forwarding scheme to achieve control plane and forwarding plane support BIERv6.The cross-domain propagation of multicast VPN through BIERv6 bearing PMSI tunnel can realize data surface monitoring more effectively and improve data transmission quality and stability.The experimental results show that the BIERv6 tunnel can be used efficiently in equipment and IPTV scenarios.Data packets were analyzed by TestCenter instrument streaming,data transmission was realized by defining data structure,and group member joining request time and network delay were analyzed in combination with the application test of the design scheme on the equipment.The delay difference was obtained within 0.5 ms.The multicast VPN communication based on BIERv6 technology is not affected by network load,and the network transmission is more stable.

关 键 词：BIERv6 组播技术 PMSI隧道 组播VPN 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]