Software-defined wide-area network (SD-WAN)

Business Challenge :

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, video conferencing, 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.

Winning Solution :

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.

DFX – can orchestrate the end-to-end service by pushing flows to a centralized controller – setting policies, prioritize traffic and apply end-to-end QoS. 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).