Starting From the traditional switching technology, the third layer switching technology, and the relation between IPV6 and the third layer switch, and its application in network are discussed.

从传统的交换技术出发，讨论了第三层交换技术，第三层交换和IPV6关系及第三层交换技术在网络中的应用。

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This technology auto accomplished in physical layer, no need upper protocol layer support, has the strongpoint of fast switching and short application resume time.

该技术完全在物理层自动完成，无需上层协议的支持，具有快速切换和业务恢复时间短等优点。

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Software-defined networks will provide some of this flexibility by separating the control function from data forwarding, but there are additional capabilities emerging, he says, such as intelligent switching of wavelengths, the ability to mix dedicated bandwidth with best-efforts networks, and application layer network traffic optimization, e.g.

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