What is SD-WAN?
Software-defined WAN is a new approach to network connectivity that lowers operational costs and improves resource usage for multi-site deployments, allowing network administrators to use bandwidth more efficiently and ensure the highest possible level of performance for critical applications without sacrificing security or data privacy.
WANs allow companies to extend their computer networks over large distances, to connect remote branch offices to data centers and each other, and deliver the applications and services required to perform business functions. When companies extend networks over greater distances and sometimes across multiple carriers' networks, they face operational challenges including network congestion, jitter, packet loss, and even service outages. Modern applications such as VoIP calling, videoconferencing, streaming media, and virtualized applications and desktops require low latency. Bandwidth requirements are also increasing, especially for applications featuring high-definition video] It can be expensive and difficult to expand WAN capability, with corresponding difficulties related to network management and troubleshooting.
SD-WAN products are designed to address these network problems. By enhancing or even replacing traditional branch routers with virtualization appliances that can control application-level policies and offer a network overlay, less expensive consumer-grade Internet links can act more like a dedicated circuit. This simplifies the setup process for branch personnel. SD-WAN products can be physical appliances or virtual appliances, and are placed in small remote and branch offices, larger offices, corporate data centers, and increasingly on cloud platforms.
A centralized controller is used to set policies and prioritize traffic. The SD-WAN takes into account these policies and the availability of network bandwidth to route traffic. This helps ensure that application performance meets service level agreements (SLAs).
For more information on deploying and configuring SD-WAN please contact us for a demo or free network analysis Evolution Networks, 954-866-1600.