SD-WAN requirements

  • The control plane provides management of larger, more diverse data plane components or physical resources and devices.

    Communication protocols, such as the standard OpenFlow protocol, enhance communication between the control plane and the various data planes. (This protocol is often referred to as the southbound interface because it is located in the design sketch on the south side of the control plane.)

    An application interface that enables the application to abstract the network. (This application interface is often referred to as the northbound interface because it is located in the design sketch on the north side of the control plane.)

    The IT team of a commercial company now faces three serious challenges:

    • Need to continuously increase the bandwidth of MPLS-based networks to ensure application performance
    • Highly complex branch office deployment
    • The static and private features of traditional WANs need to be ported to dynamic and public cloud environments.

    We will discuss the above challenges in the following sections.

    Handling applications with large bandwidth

    Business companies must ensure that their most important applications, whether they are customer-facing or employee-facing productivity tools, run uninterruptedly and perform well. Moreover, commercial companies continue to deploy distributed architectures, requiring business structures to be closely linked to customers and partners. At the same time, they expect the farthest site experience, through WAN links, to provide the same performance and continuity as at corporate headquarters or data centers.

    In order to achieve the same performance as the regional network, enterprises generally seek private networks, such as private T1 access to the MPLS network, and have reached the service level guarantee. Often, complex, versatile networks, each one-to-one deployment.

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