任意源组播下的丢包分析与避免  

ASM Multicast Packet Loss Analysis and Avoidance

作　　者：张潇男[1] 石湘[2] ZHANG Xiaonan;SHI Xiang(The 54th Research Institute of CETC,Shijiazhuang 050081,China;China Satellite Maritime Tracking and Control Department,Wuxi 214431,China)

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081 [2]中国卫星海上测控部,江苏无锡214431

出　　处：《计算机与网络》2020年第9期57-59,共3页Computer & Network

摘　　要：在任意源组播(ASM)网络环境的基础上,对因PIM-SM协议构建组播路由过程中自动对组播共享树向最短路径树(SPT)切换时所导致的组播数据丢失问题进行了分析。针对目前主流网络设备避免SPT切换的几种方法的优缺点进行了介绍,并指出在专网应用时的不合理性。通过原理分析和模拟环境试验,提出了一种通过添加静态组播组构建稳定组播路由,避免SPT切换的新方法。On the basis of Any Source Mmulticast(ASM)network environment,the cause of multicast data loss caused by the automatic switch from Rendezvous Point Tree to Short Path Tree(SPT)in the process of building multicast routing by PIM-SMprotocol is analyzed.The advantages and disadvantages of several methods to avoid SPT switching of current mainstreamnetwork equipment are introduced,and the irrationality of application in private network is pointed out.Finally,a new method is proposed to build a stable multicast route and avoid SPT handoff by adding static multicast groups.

关 键 词：任意源组播 最短路径树 丢包 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]