面向地址空间分离网络的地址映射模型:AMIA

地址空间分离是解决互联网路由可扩展问题的有效方法,其关键技术是边缘网地址到核心网地址的映射机制.现有典型地址映射模型基于缓存映射项机制实施,其映射信息交互协议复杂,路由器对映射信息缓存的维护开销很大.而且,缓存机制中映射项查询延迟较长,明显影响到端系统用户的网络体验.文中设计了一种新型的面向地址空间分离网络的域间地址映射模型:AMIA,通过BGP协议扩展完成映射信息交互,映射项存储不带有任何缓存机制,方便实施.文中还为AMIA模型设计研制了集成PE和KMS功能的多功能路由系统,并在CERNET2中搭建实验网进行实验验证.理论分析及实验结果证明AMIA模型具有高性能、可行性及易实施等特点.

AMIA: Address Mapping Model Facing the Network with Separated Address Space

Address space separation is an effective solution to the scalability of Internet routing,key technique of which is the address mapping mechanism from edge network to core network.Currently,all typical address mapping models are designed based on caching of mapping items,which require complex control protocol and bring great cost to PEs.Moreover,delay of address mapping lookup is so long as to severely impact the experience of network users.In this paper,we propose a novel model,AMIA(Address Mapping for Inter-AS),in which mapping messages transferring are fulfilled through BGP extension without any caching mechanism.Therefore,AMIA is very easy for practical deployment.Besides,we also develop the novel router integrating functions of PE&KMS and construct an experimental network on CERNET2 to validate AMIA model.Both theory analysis and experimental results show that AMIA is of high performance,feasibility and easy implementation,etc.