通过介绍SDN技术的起源、定义和流派，讨论了该技术在国内外的商用发展情况和产业链现状，分析了SDN技术的价值、未来发展趋势及大规模商用可能遇到的阻力，并提出了将其进行运营商全网应用的构想。%Firstly, the origin, definition and genre of SDN technology are briefly introduced. Secondly, the commercial development and industry chain situation of this technology at home and abroad are discussed. Then, the value, future development trend and the possible resistance in large-scale commercial application of SDN technology are analyzed. Lastly, the idea of applying SDN technology to the whole network of the operators is put forward.
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