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移动互联、电子商务、电子政务的巨大需求推动着虚拟化、大数据、云计算、SDN等新技术不断涌现。与此同时,为承接越来越多变的应用,网络结构也越来越复杂,设备种类和数量也都极大增长,传统网络的运维和管理方式开始显得难以应付。针对这样的局面,VAN技术能够给用户带来解决方案。VAN(Virtual Application Network,虚拟应用网络),就是通过虚拟化的方式将复杂的传统网络抽象出来成为一些基本的元素,通过自动化和可编程的管理平台让这些网络元素有机地按照上层应用的需求灵活地调度。
The huge demand for mobile Internet, e-commerce and e-government has driven new technologies such as virtualization, big data, cloud computing and SDN. At the same time, in order to undertake more and more varied applications, the network structure has become more and more complex, and the types and numbers of devices have also greatly increased. As a result, the operation and maintenance of traditional networks have become difficult to cope with. In view of this situation, VAN technology can bring solutions to users. Virtual Application Network (VAN) is to abstract complex traditional networks into some basic elements by means of virtualization, and make these network elements organically follow the requirements of the upper-layer applications through an automated and programmable management platform Dispatch.