Software-Defined WAN (SD-WAN)
SD-WAN is a popular approach to private networking since it is easy to deploy and manage. It is much less expensive than traditional private WAN deployments like MPLS or Private Line and uses bandwidth more efficiently to ensure the highest level of application performance while lowering bandwidth and hardware costs. Software-Defined Wide Area Networking (SD-WAN) is a transformational approach to simplify branch office networking and assure optimal application performance. Unlike traditional WANs, SD-WAN delivers increased network agility, cost reduction and central manageability.
Advantages of SD-WAN Solutions
Simplify Branch Network
Provision branch offices faster with automated zero-touch deployment, simplified configuration, orchestration and on-going monitoring with centralized troubleshooting tools. Simplify branch infrastructure with the ability to insert network services on the branch edge, in the cloud or in the regional and enterprise data centers.
Optimize Application Performance
Optimize application performance over Hybrid or Internet links with direct, secure access to enterprise and cloud applications. SD-WAN provides consolidated monitoring and visibility across multiple WAN links and service providers.
Deliver Branch Agility
Enable multiple links, devices and services to coexist and interoperate with incumbent solutions and make the branch agile. APIs enable integration into various management and reporting systems deployed by enterprises today.
Deliver Hybrid WAN with ease and enable branch offices with ordinary broadband as enterprise-grade WAN. Reduce hardware-delivery costs by choosing from deployment options such as virtual-machine on a commercial-off-the-shelf (COTS) device, virtual machine on an existing x86-based router or a purpose-built VeloCloud Edge device.
SD-WAN vs. Traditional WAN
Traditional WAN design is based on multiple devices stacked in the branch office with siloed management and disparate WAN links connecting them.
Limited bandwidth of expensive private/MPLS circuits inhibits rollout and impacts performance of applications. At the same time, private/MPLS WAN redundancy is complex to deploy and manage.
Unpredictable Application Performance
Application traffic over Internet links lacks SLAs for predictable performance. Every change in the application quality of service requires manual changes across the branches and the datacenter
With no direct access to cloud resources from the branch with the archaic hub and spoke network design, the traffic is backhauled through the enterprise datacenter with heavy performance penalties.
Traditional WAN includes multitude of single-function devices and appliances connecting via different WAN links. This infrastructure sprawl causes complexity of branch IT management.
SD-WAN Makes Branch Networks Better
Software centric approach capable of being delivered prepackaged on economical x86 platforms or virtually on existing router and server platforms.
Deliver a network overlay with multiple links from different service providers to form a unified pool of bandwidth. Provide superior performance and high availability for applications independent of the underlying transport links.
Enterprise-grade performance is assured even when traffic is going to cloud applications. Incremental overlay design abstracts software layer from the underlying hardware layer and the physical transport to make an elastic network.
Simplified Branch Services
SD-WAN provides insertion of network services whether on the branch customer premise equipment (CPE), in the cloud, or in regional and enterprise data centers. Software-defined flexibility with automation and business-policy abstraction simplifies complex configurations of traffic routing and policy definitions.