基于SSM模式的IGMP snooping设计与应用

摘要

针对ASM(Any Source Multicast)模式在组播业务中对访问控制机制的不足,讨论基于源特定地址组播SSM(Source Specific Multicast)模式和支持该模式的IGMPv3协议,并在以IPTV部署为应用背景的IPDSLAM系统中实现支持IGMPv3协议的IGMPsnooping功能,初步完成对IPTV源频道(组播业务)的访问控制管理机制.%To address the issue of deficiency of ASM (any source multicast) model on access control mechanism in multicast service, the article discusses the SSM (source specific multicast) model and the IGMPv3 protocol which supports SSM. With this, the IGMP snooping function supporting IGMPv3 protocol has been implemented in IPDSLAM system which uses IPTV deployment as the application background, and the initial completion of access control mechanism on IPTV source channels (multicast service) is then achieved as well.