SD-WAN的出现，将彻底改变网络现状
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">企业如何portant; overflow-wrap: break-word !important;">快速的组建局域网？如何让连锁酒店portant; overflow-wrap: break-word !important;">监控集中查看？这些问题都是我们平时经常会遇到的，也常常让项目和企业人员头疼的，SD-WAN的出现，将彻底改变这些网络现状。inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(200, 54, 71);">portant; overflow-wrap: break-word !important;">一、什么是SD-WAN
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">SD-WAN（Software-Defined Wide Area Networkportant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">）即portant; overflow-wrap: break-word !important;">软件定义广域网。portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">是这几年推出的全新概念，但它成为了目前关注的焦点，甚至成为了未来的发展趋势之一。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">单从概念上来讲，SD-WAN主要是portant; overflow-wrap: break-word !important;">将软件定义网络（SDN）的技术应用在portant; overflow-wrap: break-word !important;">管理广域网络（WAN）。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">这种服务的典型特征是将网络控制能力通过软件方式“云化”，支持应用可感知的网络能力开放。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(200, 54, 71);">portant; overflow-wrap: break-word !important;">二、为什么需要SD-WAN
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">那么，portant; overflow-wrap: break-word !important;">为什么需要SD-WAN？它又对我们的工作生活有什么帮助？
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">这点还得从人们熟知的WAN（广域网）说起：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">首先，portant; overflow-wrap: break-word !important;">WAN是由无数个LAN（局域网）组成的，简单的说，大家使用的Internet就相当于portant; overflow-wrap: break-word !important;">全世界范围的WAN。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">很多企业、机构由于工作需求会搭建私有WAN，比如企业各分部处在不同城市，要想实现portant; overflow-wrap: break-word !important;">互联互通就需要搭建WAN，也就是远距离组网。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">传统方法之一是向portant; overflow-wrap: break-word !important;">ISP购买服务、申请专线、专网，交由对方完成私有WAN的搭建。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">但这样一来就会产生昂贵的费用，其中专线费用加上公网IP的费用，两者加起来每月需承担数万元，对于中小型企业来说，portant; overflow-wrap: break-word !important;">这是一笔不小的成本。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(200, 54, 71);">portant; overflow-wrap: break-word !important;">三、SD-WAN的优势是什么
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">为了解决这类问题，技术人员portant; overflow-wrap: break-word !important;">将SDN的技术应用在WAN中，SD-WAN也便由此而生。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">相比传统组网，SD-WAN的优势在于在实际应用方面，它实现既可以是portant; overflow-wrap: break-word !important;">物理硬件，也可以是软件。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">换句话说，基于SD-WAN的应用并不在于底层硬件和协议，可基于和Internet类似的portant; overflow-wrap: break-word !important;">公共网络搭建私有WAN，并且portant; overflow-wrap: break-word !important;">对公网IP没有要求。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">另外，得益于SD-WAN对底层硬件的虚拟化，还带来了更好的流量可见性，可对传输数据进行针对性分流，并通过多线路接入等手段进行加速。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">在实际应用方面，SD-WAN具备很高的灵活性和易用性，portant; overflow-wrap: break-word !important;">以基于SD-WAN的蒲公英智能组网为例：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">通过它portant; overflow-wrap: break-word !important;">进行组网无需专网、专线、公网IP，甚至不改变现有网络结构即可完成portant; overflow-wrap: break-word !important;">私有网络搭建。
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(200, 54, 71);">portant; overflow-wrap: break-word !important;">四、SD-WAN的具体实现方式
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">回到前文说到的portant; overflow-wrap: break-word !important;">企业分部间组网，如果使用基于SD-WAN的蒲公英组网时，即使网络结构复杂也portant; overflow-wrap: break-word !important;">只需接入蒲公英硬件即可，无需改变任何网络结构，成本优势明显。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">在实际组网过程中只需要简单的两步，相比传统组网具有极大的优势：portant; overflow-wrap: break-word !important;">降低时间成本，节省运维成本。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(200, 54, 71);">portant; overflow-wrap: break-word !important;">五、SD-WAN的实际应用
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">就目前而言，SD-WAN已经有着广泛的应用场景，像是portant; overflow-wrap: break-word !important;">分支互联、移动办公、视频监控等等。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">例如在portant; overflow-wrap: break-word !important;">安防视频监控领域，对于一些portant; overflow-wrap: break-word !important;">连锁性企业，想要portant; overflow-wrap: break-word !important;">实时查看各分店的监控比较麻烦：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">可能是视频监控设备的型号新旧不一，或是个分布点使用的宽带品牌不一，又或是视频资源可用性差等等原因。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">但针对以上难题，通过蒲公英SD-WANportant; overflow-wrap: break-word !important;">组网路由器搭建虚拟局域网就能迎刃而解。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">只需要在监控中心和各个门店portant; overflow-wrap: break-word !important;">放置一台蒲公英路由器，并且portant; overflow-wrap: break-word !important;">进行组网，就能实现互联互通。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">而如果使用portant; overflow-wrap: break-word !important;">传统组网解决方案，就需要portant; overflow-wrap: break-word !important;">申请专网、专线，同时三家分店还需要购买固定的公网IP以及相应网络服务器，这样就会耗费大量的时间成本和运维成本。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">但通过SD-WAN仅需在各portant; overflow-wrap: break-word !important;">地部署一台蒲公英路由器即可，随后便能对其进行远程管理，实现异地数据的互联互通。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; background-color: rgb(255, 255, 255); box-sizing: border-box !important; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(200, 54, 71);">portant; overflow-wrap: break-word !important;">六、写在最后
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">SD-WAN是一种可以portant; overflow-wrap: break-word !important;">快速部署的、低成本高灵活性的广域网解决方案，它将成为行业主流的趋势毋庸置疑。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">其作为经济、高效的技术，能够为企业带来众多优势，不仅解决了传统组网时的成本、时间问题，同时还带来了更好的灵活性和可靠性。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(62, 62, 62); font-family: Optima-Regular, PingFangTC-light; font-size: 15px; letter-spacing: 0.544px; text-indent: 34px; widows: 1;">未来，将会有更多的新技术融合进portant; overflow-wrap: break-word !important;">SD-WAN中，包括5G、边缘计算、云等资源，SD-WAN将不断发展并改变现有网络。
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