Software-Defined WAN (Wide Area Network), SD-WAN for short, is
software based management that tries to eliminate the complexity of packet
routing by an understanding of applications, their performance and the
policies placed. Typically an edge device or VM using software-defined
networking (SDN) technology, it
is used to prioritize bandwidth allocation and use
dynamic path selection for critical applications, like voice, video or CRM
applications. These priorities are set according to policies and rules. SD-WAN allows
network administrators to create virtual networks at the enterprise level
improving network demands using automation. Connecting dozens of remote
offices together using broadband options can lower costs over a total MPLS
network, a much more expensive option.
SD-WAN offers a solution for companies to use broadband connections for a majority of their networking tasks while reserving their MPLS connections for the most critical data. The complexity of hybrid systems that use router packet prioritization creates the need for time consuming updates as network traffic changes. SD-WAN addresses these complexities by using software-defined networking (SDN) technology which provides many benefits.
SD-WAN technology offers companies an effective way to solve network congestion by using lower cost broadband rather than than expensive MPLS. By monitoring the network, including broadband connections, it can identify how well specific applications can be handled, including voice or video traffic. If services become problematic from jitter, latency or limited bandwidth, traffic can be rerouted in order to meet QoS for certain applications. SD-WAN offers flexibility and much easier management than packet prioritization.
Most small businesses use some sort of cloud services, such as accounting software, payment acceptance, email marketing, or web hosting. The big decision comes when they decide to move their phone system. However, after a successful move to hosted VoIP and the realization of the efficiencies that accrue from mobility and its advanced features, other cloud services usually follow. The choices of Software as a Service (SaaS), such as CRM (Customer Relationship Management) apps, backup apps, storage space are large and readily available at reasonable costs. The problem is that all this new data is moving through the customer's Internet connection and starts to constrict the phone service. The more cloud apps used, the worse it gets. Issues with choppy or degraded voice and video conferencing can occur. Slow applications ends up causing lost customers, lost revenue, and lost opportunities. The fix is SD-WAN which manages these critical application to ensure good performance. SD-WAN benefits include:
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