基於Linux的身份和位置分離映射機制設計與實現

Abstract

在傳統互聯網中TCP/IP協議體系中，IP位址既代表節點的身份標識又代表節點的位置標識。IP位址的這種雙重語義不利於支持移動性、安全性和路由可擴展性等功能。將IP位址的身份標識和位置標識分離已成為下一代互聯網的設計思路。一體化網路通過引入接入標識、交換路由標識和接入交換路由器，把網路劃分為使用接入標識的接入層和使用交換路由標識的核心層，從而達到身份與位置分離。本文主要基於Linux平臺設計和實現一體化網路中的身份與位置分離映射機制，具體包括協定棧資料包轉發流程設計、映射關係存儲結構設計等。In the traditional TCP/IP stack, the IP address represents both the identifier and locator roles of a node. This dual nature makes it difficult to support mobility, security, routing scalability and other functions well. The new idea of separating the identifier and locator roles of the IP address becomes a hot research top in next generation Internet. In order to achieve the separation of identifier and locator, the universal network introduces access identifier, switch route identifier, and access switch router to divide the network into the access layer using access identifier and the backbone layer using switch route identifier. This paper mainly designs and implements the separation and mapping scheme of identifier and locator in the universal network based on Linux platform, including the packet forwarding process and the data structure of mapping relationship tables.