基于Nat-Pt的应用层组播过渡方案

Transition multicast scheme on application layer based on Nat-Pt

提出了一个基于Nat-Pt和scatter cast的IPv4与IPv6组播的过渡方案.该方案利用scattercast组播体系基于proxy实现的特性,将IPv4的应用层组播和IPv6的IP组播结合在一起,形成一个完整的组播过渡体系.通过在Nat-Pt的两侧设置关键SCX节点,限制了通过Nat-Pt建立的组播通道数量.为提高组播网络的鲁棒性,引入多Nat-Pt协同的连接方式,并设计了多Nat-Pt控制算法.仿真实验结果表明,该组播方案能够实现IPv4向IPv6的平滑过渡,并比单纯的应用层组播有更高的效率,同时网络具有良好的鲁棒性.

A transition multicast scheme on application layer for IPv4 and IPv6 based on Nat-Pt and scatter cast is presented, which integrates the IPv4 application-level mulficast and IPv6 IP layer multicast into an integrated transition multicast scheme. There are critical scatter cast proxies on both sides of the Nat-Pt in this scheme, which will restrict multicast connection numbers. The cooperation scheme and control algorithm in multiple Nat-Pts strengthen the reliability and robustness of the transition multicast network. The simulation results show that this scheme can accomplish a smooth transition from IPv4 to IPv6 with better effectiveness and robustness.