A rewriting-based scalable anycast method and system in NDN

Abstract

A rewriting-based scalable anycast method in NDN is disclosed, comprising: a client sends a first request to the network; an intermediate router forwards the first request to a certain first-level scheduler; the first-level scheduler selects a server group , and rewrite the first request as the second request; the second-level scheduler sends the second request to the second-level scheduler of the selected server group, selects the server, and rewrites the second request as the third request, and Forward the third request to the selected server; the server returns the first response message to the second-level scheduler; the second-level scheduler rewrites the first response message as the second response message, and returns the second response message to the first-level scheduler A response message: the first layer scheduler rewrites the second response message into a third response message, and returns the third response message to the client. The method of the invention can meet the diversified anycast requirements in the NDN without destroying the forwarding logic of the NDN router, and overcome the scalability problem of the anycast.

Description

technical field [0001] The present invention relates to the technical field of Named Data Networking (NDN), in particular to a rewriting-based scalable anycast method and system in NDN. Background technique [0002] At present, users' access to the Internet has changed from point-to-point communication to content acquisition. The traditional TCP / IP network only transmits content, but does not perceive content, resulting in a large amount of redundant traffic transmission on the network. In order to solve the content explosion caused by content acquisition, the research community proposes a content-centric network NDN, which realizes the decoupling of content and address, as well as the sender and receiver, and provides ubiquitous built-in cache to satisfy users' requirements for content. Asynchronous access with heavy tail characteristics. [0003] There are many large-scale services with billions of dollars in the existing Internet, such as Google, Facebook, WeChat, etc. ...

AI Technical Summary

Problems solved by technology

However, the existing NDN transmission mode only provides a simple anycast mechanism based on anycast routing, which cannot meet the flexible and changeable anycast requirements.

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