SD-WAN - Introduction

What is SD-WAN ??

SD-WAN?is a software-defined approach to managing the WAN.

SDWAN creates a virtual WAN architecture that allows enterprises to securely and efficiently connect users to applications. This technological advancement gives networking unmatched agility and cost savings.?It provides more resource usage and simplify operations by automating branch and WAN architecture that is required to fulfill modern IT business initiatives.

One of SD-WAN's primary characteristics is to manage different connection types (MPLS, broadband, wireless), as well as segmenting, dividing, and securing WAN traffic.

Problems with traditional WAN:

·?????As new policies are implemented, each unique device must be controlled separately, requiring manual intervention from the administrator.

·?????Users are forced to rely on routing methods because failover depends on the link's condition.

·?????It will take some time to build up new networks at various branch offices, as this typically needs months of preparation before implementation.

·?????MPLS is paid by megabit and can become quite expensive.

Additionally, when a user needs to expand their network geographically, the same carrier that manages the rest of the MPLS network must invest in new infrastructure.

SD-WAN comes to rescue:

• ·Improved performance: Organizations can improve the user experience by enabling effective access to cloud-based resources without the requirement to backhaul traffic to centralised sites.?Critical applications can be prioritised across the WAN with SD-streamlined WAN's QoS.?SD-WAN offers real-time traffic monitoring to reroute mission-critical traffic around brownout situations rather than waiting for an up/down event.
• Lower costs. Expensive MPLS links can be eliminated thanks to SD-WAN technology.?It uses faster, more affordable connectivity choices like broadband or DSL.?Also, MPLS circuits can still be used if they are available, meet additional SLA criteria, and are simple to integrate.
• Simplicity: As network requirements change, WAN managers may build and update security rules in real time since each device is centrally managed by SD-WAN controller. Organizations can further decrease the complexity, resources, and operating expenses needed to turn up new locations by integrating SD-WAN with zero-touch provisioning, which helps automate deployment and setup operations.