Thorough dissection of SD-WAN service

  • Although the WAN can serve as a savior for these large networks, enterprises still face end-to-end communication problems, especially those with multinational services. At this point, companies that compare SD-WAN to virtual private networks should make decisions based on a reasonable combination of business processes, applications, and policies. Specifically, one should consider whether the company's business needs to guarantee the performance of the application, or to achieve the best results in all aspects? Furthermore, is the enterprise using the cloud and supporting remote, insecure networks? Finally, is the company wanting to manage its own WAN?

    We say that for companies that want to achieve cost-effective, best-performing virtual private network services, using traditional virtual private network devices and a simplified feature set, simple routers or IPsec-enabled users are acceptable. The cost of deploying such a service is usually the lowest, and some companies use broadband to deploy virtual private network services for less than $100 a month.

       When it comes to SD-WAN, once enterprises adopt and rely on cloud services, or require application awareness, remote access, and fine-grained security, SD-WAN technology is beginning to stand out. While SD-WAN does not have end-to-end quality of service (QoS) like Layer 3 MPLS VPNs, SD-WAN addresses the challenge by providing the ability to perceive network conditions and local priority applications. SD-WAN's native QoS is much more advanced than basic Internet vpn services because it provides fine-grained support, as well as caching or application acceleration.

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