摘要
软件定义广域网(SD-WAN)是将软件定义网络(SDN)技术应用于广域网(WAN)连接的服务。重点阐述了SD-WAN应用的关键技术,包括SD-WAN服务中4种典型技术架构、SD-WAN的整体功能模块以及边缘设备中所采用的关键技术。与传统的WAN架构相比,SD-WAN技术以一种多接入、安全、策略驱动业务、弹性路由、多虚拟隧道、敏捷上云的方法重新定义了开放式的WAN架构。
The software-defined wide-area network(SD-WAN) is a specific service that applies the software-defined network(SDN) technology to WAN connections. The key technologies of SD-WAN are discussed in this paper, including the technologies used in the following items: four typical technology architectures, the overall functional modules, and the edge devices. Compared with traditional WAN architecture, the SD-WAN technology redefines the open WAN architecture with a multi-access, security, policy-driven service,flexible routing, multiple virtual tunnels, and agile touching cloud approach.
引文
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