SD-WAN, the wide-area software-defined network

  • SD-WAN represents the most interesting application of SDN technology in 2015. It is designed to help users reduce the cost of wide area network (WAN) and increase network connectivity flexibility. According to some surveys, although there are many new and old suppliers entering the market, the actual deployment situation in 2015 is still very limited. But SD-WAN is more than just a buzzword, it is already bringing benefits to early adopters.
    From Stanford University in 2006 to the centralized control architecture and Openflow agreement, to the commercial case of Google B4 in 2012, the focus of SDN budding and disillusionment has been in the cloud and data center scenes, the industry is eager to find the next killer App. On the other hand, the development of cloud computing technology has triggered the transformation of the IT industry. Internet + has driven the transformation of traditional industries. To B's Internetization has surpassed the attention of To C in 2014. It can be said that SD-WAN services focusing on the enterprise market and the wide area network are formed in such industry background and expectation.
    The first word about SD-WAN appeared in the public view was published in networkcomputing in September 2014, but in fact the concept of SD-WAN comes from the earlier emergence of Hybrid WAN, to solve the problem of unstable Internet interconnection in the enterprise market. A game-like problem such as expensive. At the same time, in the ONUG Open Network User Forum in 2014, many enterprise users unanimously put forward such application requirements.
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