SD-WAN

What is SD-WAN

Software-defined wide area networking (SD-WAN) is a transformative technology designed to simplify management of IT infrastructure by creating a virtual WAN that securely connects users to their applications.
SD-WAN offers simplified branch office connectivity, improved reliability, optimized application performance, and increased network agility. SD-WAN reduces business costs by enabling a more efficient use of resources, as well as an automated branch and WAN architecture to meet the demands of modern IT businesses.

SD-WAN combines multiple networks, including broadband, DIA, and LTE. In addition to existing MPLS networks, these circuits can create hybrid networks, or they can be used as an alternative to MPLS with all-Internet connections via wires and wireless links.

How It Works...

SD-WAN creates a virtual WAN with centralized control to simplify the management and deployment of branch office services.

Network overlay

A SD-WAN network creates a WAN transport-independent overlay network, replacing legacy branch office routers and simplifying WAN infrastructure. SD-WAN provides greater control and management, allowing for policies at the application layer to ensure optimum performance.

Application Awareness

Application awareness is a crucial element of SD-WAN. SD-WAN understands individual applications, translating their SLA requirements into policies the network must follow. This provides active network and application experience monitoring that ensures optimal traffic delivery and QoE – whether on-premises, private/public cloud, or SaaS.

Policy-based Framework

SD-WAN offers a policy-based framework that can be automatically managed through unified control and management capabilities. Improved visibility allows IT to gain a better understanding of applications, devices, users, and networking, which ensures that business goals and objectives are achieved. It simplifies IT’s ability to define, control, and change business requirements across branches, data centers, and cloud/SaaS.

Network overlay

A SD-WAN network creates a WAN transport-independent overlay network, replacing legacy branch office routers and simplifying WAN infrastructure. SD-WAN provides greater control and management, allowing for policies at the application layer to ensure optimum performance.

Application Awareness

Application awareness is a crucial element of SD-WAN. SD-WAN understands individual applications, translating their SLA requirements into policies the network must follow. This provides active network and application experience monitoring that ensures optimal traffic delivery and QoE – whether on-premises, private/public cloud, or SaaS.

Policy-based Framework

SD-WAN offers a policy-based framework that can be automatically managed through unified control and management capabilities. Improved visibility allows IT to gain a better understanding of applications, devices, users, and networking, which ensures that business goals and objectives are achieved. It simplifies IT’s ability to define, control, and change business requirements across branches, data centers, and cloud/SaaS.

Why SD-WAN

SD-WAN solutions often offer the following:

  • Lower circuit costs by using broadband, DIA, LTE
  • Increase network agility by simplifying control of the entire WAN
  • Create an active-active hybrid network with MPLS, broadband, DIA, LTE for increased bandwidth capacity and more efficient and higher per-site resiliency/availability
  • Automate operations, while templates simplify IT workflows
  • Provide reliable and secure Internet access to cloud and SaaS applications
  • Deliver network circuit and carrier independence
  • Centralize and unify the entire WAN for simplified management, deployment, and change control
With an effective SD-WAN solution, enterprises do not have to spend time and resources configuring and managing networks, instead concentrating on deploying applications such as IoT, VoIP, unified communications, and edge computing.

Instead of managing WAN complexity, IT can add these (OTT) services to automated and programmable cloud-native platforms by focusing on improving these business-oriented services. SD-WAN is a cloud-native platform that provides IT departments with an automated policy-driven WAN infrastructure. This transforms the network from an impediment to a tool for implementing business services.

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