IP网的层次寻址与性能分析

HIERARCHICAL ADDRESSING IN IP NETWORKS AND PERFORMANCE ANALYSIS

为解决IP地址空间耗尽问题,本文提出一种分级寻址的IP网体系结构(IPEA),说明了分级寻址的IP网地址空间与寻址方案,定义了带扩展地址的IP包格式,及层次路由算法。并以仿真实验分析评价了IPEA的性能,结果表明IPEA有以下优点:1采用扩展地址扩大了地址空间,解决了IPv4地址耗尽问题;2减小了路由表长度,有利于解决路由表爆炸问题;3基本不改变IPv4寻址方式,迁移容易;4由于使用了内部地址,更便于网络管理。

To present a solution to the problem of address space exhaustion in the Internet, this paper proposes a multi-tier addressing architecture of the Internet （IPEA）, illustrates the address space and addressing scheme of IPEA, defines the format of IP packet with extension address, and hierarchical routing algorithm. This paper analyzes and evaluates the performance of [PEA with simulation, and concludes that IPEA has such advantages： first, it provides a solution to the problem of address depletion in the Intemet; second, it reduces the routing table length, helps dealing with routing table explosion; third, it demands little change on the IPv4 addressing scheme, easy for transition; finally it makes the autonomous network more manageable by using private address.