Word of the Day: SD-WAN (software-defined WAN)

Word of the Day Daily updates on the latest technology terms | January 4, 2019 SD-WAN (software-defined WAN) Software-defined WAN (SD-WAN) is a technology that distributes network traffic across wide area networks (WAN) that uses software-defined networking (SDN) concepts to automatically determine the most effective way to route traffic to and from branch offices and data center sites. Most forms of SD-WAN technology create a virtual overlay that is transport-agnostic -- it abstracts underlying private or public WAN connections, like MPLS, internet broadband, fiber, wireless or Long Term Evolution (LTE). Enterprises can keep their existing WAN links, while overlay SD-WAN uses the multiple tunnels to optimize bandwidth by directing WAN traffic along the best route to and from branch offices and data center sites. SD-WAN technology centralizes network control and enables agile, real-time traffic management over these links. SD-WAN is managed by a centralized controller. The software enables IT staff to remotely program edge devices and reduce provisioning times, thus minimizing or eliminating the need to manually configure traditional routers in branch locations. While SD-WAN products and services vary among providers, most are based on one of two types: overlay SD-WAN or network as a service. With an overlay SD-WAN, a vendor provides an edge device to the customer that contains the software necessary to run the SD-WAN technology. For deployment, the customer plugs its WAN links into the device, which automatically configures itself with the network. Providers that offer SD-WAN as a type of network as a service enable their customers to access their own private networks. SD-WAN functionalities, like traffic prioritization and WAN optimization methods, are incorporated into the service. Continue reading... Quote of the Day "Whether in the throes of SD-WAN issues or preparing for the future, it's important for organizations to have practical steps to follow when taking on SD-WAN troubleshooting." - Terry Slattery Trending Terms WAN software-defined networking overlay network MPLS WAN optimization IPsec SD-branch Learning Center Network security, SD-WAN suppliers revamp branch security Traditional network security providers are venturing into the SD-WAN space by integrating SD-WAN capabilities into their existing firewalls. Learn more about how security, SD-WAN and branch networks are evolving. What to consider when integrating SD-WAN and ITSM tools Although SD-WAN technology can provide valuable network visibility, it doesn't always offer the level of insight IT teams want. Learn how enterprises are looking to ITSM tools to help and where the integration with SD-WAN falls short. A deep dive into SD-WAN troubleshooting and monitoring Effective SD-WAN troubleshooting means IT teams need to understand the devices, connectivity, topology and more. It also helps to have a process in place before problems arise. Consider these practical troubleshooting and monitoring steps when dealing with SD-WAN issues. The future of SD-WAN moves away from stand-alone product It's the time of year when our expert dives into predictions about the future of SD-WAN technology. While market consolidation and shifting MPLS roles aren't radical expectations, 2019 will likely see SD-WAN move away from a stand-alone product into a feature set. 'Best-of-breed' SD-WAN option supersedes big boxes, expert says SD-WAN options are varied and diverse, from managed SD-WAN and do-it-yourself to 'best-of-breed' strategies and one big box that combines functionality. Learn why one expert thinks integrating features from multiple vendors makes sense. Quiz Yourself The survey results taught us that one in three network administrators ____ interested in learning more about software-defined networking. a. was b. were Answer Stay in Touch For feedback about any of our definitions or to suggest a new definition, please contact me at: mrouse@techtarget.com Visit the Word of the Day Archives and catch up on what you've missed! FOLLOW US About This E-Newsletter This e-newsletter is published by the TechTarget network. To unsubscribe from Whatis.com, click here. Please note, this will not affect any other subscriptions you have signed up for. TechTarget, Whatis, 275 Grove Street, Newton, MA 02466. Contact: webmaster@techtarget.com Copyright 2018 TechTarget. All rights reserved.