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Industrial Ethernet Book 103

data centers and remote offi ces, as well as connections between data centers, remote offi ces, and cloud resources. SD-WAN leverages broadband Internet while providing the ability to incorporate traditional dedicated WAN technologies like MPLS. SD-WAN is transport agnostic and overlays controls that deliver quality of experience and ensure reliability, predictability, security, manageability, and reduced cost. For example, a company may have several data centers, large offi ces with hundreds of employees, and small field offi ces. It may use cloud-based services for applications, servers, and storage, with a mandate to eventually migrate the bulk of its data centers to the cloud. From the users’ perspective, SD-WAN is a single wide area network that offers trustworthy security, plenty of bandwidth, service reliability, quality of service (QoS) that ensures a good user experience when making calls using Voice over IP (VoIP) or videoconferencing, and seamless access to both data center and cloud applications. From the IT perspective, SD-WAN offers a single interface to manage the wide area network, with the ability to rapidly adjust the services to accommodate new requirements, or to provision new services. However, under the surface SD-WAN takes advantage of multiple types of network connections, including traditional WAN technologies, the public Internet, and even cellular data connections. Demand is escalating for business critical, real time applications such as voice, video and virtual desktop applications. Adding more private circuits for these bandwidth hungry applications is expensive and does not improve cloud application connectivity. A cost effective solution is to leverage broadband public Internet to augment the MPLS links by using SD-WAN. Employees in main offi ces and branches need to access Software-as-a-Service applications. SD-WAN understands the location of those applications, and will direct user sessions directly to the cloud effi ciently, using the high quality link for the highest priority applications. This represents a signifi cant improvement over the traditional WAN architecture model, which routes remote employee traffi c over the MPLS network back to a data center and then redirects cloud application traffi c from there to the Internet. This adds delay and consumes unnecessary WAN bandwidth. In short, SD-WAN leverages multiple WAN technologies and other connections, lowering monthly costs, simplifying operations, adding agility, providing full security, and offering end users an exceptional experience. It’s a perfect technology for connecting branch offi ces and even short-term “pop-up” business locations that need to be brought up instantly such as construction sites. Implementing the SD-WAN Generally speaking, SD-WAN is a software control layer that contains a few parts. There is a management tool implemented in a dashboard that provides easy administration by IT professionals, with minimal effort by staff in the fi eld location. There is a control plane, that actively and intelligently manages and routes network traffi c over all available communications technologies in accordance with business priorities. And there is a business policy framework, which sets requirements and baselines for security, quality of service, cost controls, user experience and priorities. SD-WAN controls can be located within the business’ data center, but optimally it will be run via the cloud, where it is equally accessible to all business locations, and where it can be managed as Software-as-a-Service – thereby reducing the workload on corporate IT. Enterprises have options when it comes to choosing SD-WAN. They can contract directly with a provider of the SD-WAN software solution, and implement it using internal staff. For some organizations, that will be the best choice. For others, there are new SD-WAN offerings from major telecommunications service providers, who are adding SD-WAN to their portfolio of WAN offerings. For example, a new AT&T SD-WAN service will let businesses prioritize and route data across their networks based on the performance requirements of the applications. The offering, powered by SD-WAN, will also let businesses better manage their bandwidth. The SD-WAN offering will come in two fl avors: a networkbased 11.2017 industrial ethernet book offering and a premises-based solution. Cloud-delivered SD-WAN technology from VeloCloud, part of this new SD-WAN solution, offers technology for true multi tenancy, automatic link monitoring, auto-detection of WAN and Internet providers and autoconfi guration of link characteristics, routing and quality-of-service settings. QoS settings are confi gured based on a database of more than 2,500 applications, and helps determine the best paths for applications based on the business policies set by the customer. In addition, the system provides resilience that goes beyond both the public Internet and traditional MPLS WANs, taking advantage of real-time network performance to ensure that performance-dependent applications, such as voice and video calling, are given the proper priority – and blackouts, brownouts, and excessive delay and jitter can be remediated quickly, with sub-second responses. For agile businesses, branch office connectivity is not a luxury; it’s businesscritical. SD-WAN introduces enterprise WAN to Machine builders will love our new IIoT product! To be discovered at SPS IPC DRIVES Hall 2 - Stand 419 Hall 10 - Stand 420 the cloud era enabling quality of experience, reduction in Capex and Opex while simplifying branch WAN infrastructure. Mike Wood is VP Marketing at VeloCloud. www.ewon.biz /awesome


Industrial Ethernet Book 103
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