IP网络多组播流相互影响均衡问题研究

Study on Equilibrium Problem of Multicast Flow Interacting in IP Network

自从20世纪90年代初IP组播概念及试验网络出现以后,IP组播路由一直是互联网路由领域的研究热点,由于互联网规模的急速扩张带来的网络阻塞问题必须在新一代网络中得到较好解决。本文针对动态组播路由条件下多组播流相互影响问题展开研究,建立了多组播流优化均衡模型,并证明模型在总费用的最优解不但存在,而且唯一。简单的算例表明:相对静态组播路由,动态组播路由对网络性能有明显改善,为新一代网络和路由提供算法参考,并扩展到更加复杂网络的路由均衡研究。下一步将在典型的路由设备和具备一定规模的网络上进行验证和应用。

IP multicast concepts and multicast test network have been proposed in since 90＇s, the multicast routing is a hot topic in internet routing area. This paper studies interactions of dynamic multicast routing in IP network , builds the interaction equilibrium model of multicast flows and also proves the solution existence and uniqueness of the proposed model. And finally uses a example to show the cost benefits of dynamic multicast routing. The equilibrium model can be extended in solving more complicated network routing problem and is to be experimented on a real network environment supported by common used routers.