一个单源的应用层组播协议的设计和实现

Design and implementation of a single source application layer multicast protocol

提出了一个单源的应用层组播的协议SSALM。SSALM协议采用树优先的构造策略,在组成员之间构造基于源的组播分发树,并在源树的基础上建立叠加网。成员可以独立地加入组和退出组,并在组播树中进行切换。给出了该协议的主要算法和实现模型。在现有的Internet环境下使用该协议能有效地节省网络带宽。

This paper proposed an application layer multicast protocol named SSALM (Single Source Application Layer Multicast). SSALM protocol adopted tree-first approach, which constructed source-specific multicast tree among group members and constructed overlay network based on the tree. Group members were able to join group and quit group independently. Besides, members were able to switch in the tree. This paper described the major algorithms and the modules of implementation of this protocol. Using this protocol can save network bandwidth effectively in the existing Internet environment.