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All About SD-WAN

Software Defined networking in Wide Area Network is simply known as SD-WAN. SD-WAN is used to simplify both the management and the operation of WAN by means of decoupling or separating networking hardware from the control mechanism. As for idea, it is actually the same on how software defined networking applies virtualization technology for improving not just the operation but also, the data center management.

The major function for why companies are integrating SD-WAN is to have wide area networks with higher performance by making use of low cost and at the same time, commercially available internet accessibility. With such, it enables the business to either wholly or partially replace costly private WAN connection technologies.

WANs are allowing companies to further extend their networks over broader distances, to connect to their remote branches to both data centers and each other and also, to deliver applications and services needed to carry out business functions effectively. As a matter of fact, there are countless of operational challenges that companies face when trying to extend their network across multiple networks of carriers and when trying to cover longer distances. This includes but not limited to network congestion, packet loss, jitter and occasional service outages.

New technology including VOIP calling, streaming media, video conferencing and virtualized desktops all demand lower latency. The bandwidth requirements are increasing too especially for apps that feature HD vides. It may be expensive and hard at the same time in expanding the WANs capability. Products of SD-WAN are designed intentionally to be able to address these problems in the network. By way of replacing or enhancing traditional branch routers using virtualization appliances that control application level policies as well as offering network overlay, the less costly consumer grade internet connections may function more like a dedicated circuit.

This simplifies the setup process for branch personnel whether you believe it or not. SD-WAN products might be virtual or physical appliances and installed in corporate data centers, bigger offices, remote offices and so forth.

The beauty of centralized controller is the fact that it is setting the policies and prioritizing traffic. SD-WAN also take into account these said policies and availability of the network bandwidth in terms of routing traffic. The truth is, it guarantees that the performance of application meets the SLA or Service Level Agreements at all times.

According to research, it is defined that an effective and efficient SD-WAN always carry 4 major characteristics and these are the ability of supporting multiple connections, the ability of doing dynamic path selection for resiliency and load sharing purposes, ability of supporting VPNs and other third party services and provide a simple interface that’s both manageable and configurable.

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