The Anycast Technology Practice In The Dns System

DNS system in the role of the Internet is essential, CNC Beijing branch has been very seriously DNS system building. With the development of the Beijing local IP network, network structure than the previous great changes have taken place, bearing the number of users rapid development, as a key support of the DNS system must keep pace with the development of networks and users, the original system needs a greater transformation.In order to improve service quality, strengthen its security and stability operations, and other key indicators of DNS system, I made a deep study of the development and working principle of Anycast technology, as well as its actual use of the situation in the DNS root node. On this basis, with the 2008 Olympic Games in this special historical period of the safety requirements put forward by Anycast technology to the original DNS system of building large-scale structural adjustment program.This article is based on this program, in-depth analysis of the Anycast technology in CNC Beijing branch DNS system in the process of building the implementation of the role, detailed description of the core technology and Anycast DNS closely related to the overall strategy, routing node on the strategy and overall direction Metric control by the re-distribution strategy, and other key technical details, confirmed a solution in its reliability, security, efficiency, balance, and has been proven practical application of the results.