摘要： 提出了路由器辅助的可靠多播差错控制模型，该模型利用路由器维护的拓扑结构 知识协助完成逻辑树的构建，利用与路由器相关联的修复主机完成数据报文的缓存和重传恢 复工作，从而形成与多播分布树结构一致的恢复层次结构。该模型可以很好地解决可靠多播 研究中存在的问题，具有良好的适应性和可扩展性。

关键词: IP多播, 可靠多播, 差错控制, 修复主机

Abstract: This paper presents the router-assisted error control model, which t akes advantage of location and knowledge of topology of routers to build a logic al tree and uses repair host associated with routers to be responsible for buffe ring data packet and performing retransmission recovery tasks. This model can bu ild a hierarchy being congruent with multicast distribution tree and solve some problem on reliable multicast efficiently. Its adaptability and scalable is very well.

中图分类号: 

• TN915.05