一种新的应用层组播实现方案

A novel Application-layer Multicast

随着现代网络技术的不断发展,组播技术应用越来越广泛。而应用层组播由于比IP组播易于实现且扩展性优良,因而成为新的研究热点。本文提出一种新的应用层组播实现方案,它是一种两层结构体系:1、域间层次,每个自治域中设置组播代理,通过在代理间构建叠加网(OverlayNetwork)实现应用层组播;2、域内层次,在每个自治域内建立基于因特网间接通信基础框架(i3)的组播。最后用代理型应用层组播桥接每个域内的基于i3的组播,形成一种支持移动性的、适合大规模使用的应用层组播系统构架。

Multicast application has been used broadly with the development of the modern network technology, and application-layer muhicast becomes the hot spot because of its easier implementation and better scalability then IP muhicast. In this paper, we will present a novel application-layer multicast,which is a two-layer architecture： 1. The layer between Ads, proxy was set up in each Ad （Administrative Domain） and among them an Overlay Networks was constructed to complement application-layer muhicast. 2. The layer in the Ad, we set up muhicast based i3 in each Ad respectively. Finally, we use the application-layer multicast based proxy to connect the multicast in each Ad, forming the scheme to support mobility and adapt to large scope.