双层IP 地址空间体系结构

互联网面临的挑战之一就是路由系统的可扩展性.路由表的快速增长以及越来越频繁的BGP更新,对核心路由器的性能、复杂性、能耗和成本产生了越来越大的压力.近年来,大量网络研究人员正在针对这些问题寻找解决方案.将现有的IP地址分解为标识和位置的思想,是重要的研究方向之一.提出一种新的标识与位置分离方案,形成双层地址空间体系结构,克服了可实现性和可部署性的困难,在缓解路由系统扩展性难题的同时,解决了IPv4地址耗尽的问题.除了对DNS作简单的修改并增设一种网关设备外,原有的骨干网和用户网不作任何改动.

Dual IP Address Spaces Architecture

One of the challenges the current Internet faces is the scalability of routing system.The rapid growth of routing table and the more and more frequent updates of BGP are bringing heavy pressure on the performance,complexity,energy consumption and cost of core routers.In recent years,many researchers have been seeking solutions for these issues.One of the key research directions is splitting the current IP address into separate identifiers and locators.This paper proposes a novel ID/locator split solution,which forms dual IP address spaces architecture.It overcomes the difficulty of implementation and deployment.Also,it not only mitigates the routing scalability issue,but also solves the IPv4 address exhaustion problem.Besides simple modification on DNS and installation of a gateway for each user network,the original backbone network and user networks do not need any modification.