摘要
RFC6224是在PMIPv6域中支持组播接收者移动的部署方案。此方案中移动接入网关(MAG)上部署的多实体组播侦听发现(MLD)代理会造成冗余的组播数据到达MAG,产生"隧道汇聚"问题。为此,提出一种基于多上游接口MLD代理的解决方法。该方法对传统的MLD代理进行改进,把单一的上游接口改造成多上游接口,并使用"显式追踪"功能记录下游接口的组成员状态信息,从根本上解决"隧道汇聚"问题。对比分析结果显示,提出的移动组播方案与MULTIMOB工作组中的组播树移动锚点移动组播、直接路由移动组播和PMIPv6扩展移动组播方案相比更具优势。
RFC6224 is the base deployment for supporting multicast listener in Proxy Mobile IPv6 domains, but this de- ployment may lead to tunnel convergence problem with redundant traffic at the MAGs. In order to solve this problem, a multi- upstream MLD （multieast listener discovery） proxy-based solution is proposed in this paper, which essentially resolves the tunnel convergence problem by modifying the traditional MLD proxy through changing the sole upstream into multi-upstream and recording the multicast membership state information from all downstream interfaces. Compared with the other three so- lutions in MULTIMOB working group, the proposed method in this paper has more advantages.
出处
《现代电子技术》
2012年第23期41-44,48,共5页
Modern Electronics Technique
基金
国家重大科技专项(2011ZX0300200503)
北京交通大学基本科研业务费(2011JBM002)
