摘要： 针对应用层组播中缺乏有效的组成员管理问题，提出一种适用于大规模应用层组播的组成员管理模型。该模型基于轻量目录访问协议的统一身份认证系统，采用分布式目录服务设计，运用目录分割、目录推荐和目录复制技术，将分布在不同物理位置的目录信息进行高效、统一的管理，并将身份认证技术与信任模型相结合。仿真实验结果表明，该模型有效提高平均数据传输速率，增强了组成员管理的安全性。

关键词: 应用层组播, 轻量目录访问协议, 组成员管理, 身份认证, 分布式目录

Abstract: For the lack of an effective group member management, this paper presents a group member management model for large-scale application layer multicast, which is based on Lightweight Directory Access Protocol(LDAP) uniform identity authentication system, using distributed directory service design, directory partition, directory recommendation, and directory replication for the efficient and unified management of directory information which are distributed in different physical location, and combining the authentication technology with the trust model. Simulation experimental results show that SAGM can effectively improve the average rate of data transmission and enhance the performance of security.

Key words: Application Layer Multicast(ALM), Lightweight Directory Access Protocol(LDAP), group member management, identity authentica- tion, distributed directory

中图分类号: 

• TP309