In this blog, we will help you choose the best solution for your business by comparing both SD-WAN and Traditional WAN.

What Is SD-WAN?

SD-WAN stands for software defined networking, it is an exclusive approach to wide area networking because it comprise traditional WAN features like MPLS and broadband connections.

With this, organisations are free to route traffic to remote locations and various offices. It also provides a way to monitor and manage network traffic efficiently, while reducing networking costs.  SD WAN measures traffic and selects the best route for each data packet in real-time.

What Is Traditional WAN?

Traditional WAN comprises the voice and data networking infrastructure. Traditional Wan is able to connect multiple local area networks (LANS) via VPNS and routers. It’s a good choice for organisations who are managing more than one location.

Traditional WANs mostly work with multiprotocol label switching (MPLS), which provides robust and proficient network traffic flow. This allows you to arrange the voice, video, and data traffic on your network.

Which Is Better SD-WAN or Traditional WAN?

Comparatively, SD-WAN is a better option because it lets your enterprise deploy your wide area networks 100 x faster and 3x cost reducing. With the help of virtualisation and cloud, SD WAN makes your branch office both fast and efficient.

Why Traditional WAN Is Not A Good Option?

The problem with traditional WAN is that its design is based on multiple devices, fixed in the branch office via remote management and unequal WAN links connecting them.

Other Problems Associated With Traditional WAN

  • Expensive Bandwidth
  • Data Center Dependence
  • Unpredictable Application Performance
  • Complex Infrastructure.

Benefits of SD-WAN

  • Lower cost, higher performance, and better reliability than traditional WAN
  • Supports existing connectivity (Ethernet, Wi-Fi, 3G, 4G, LTE, MPLS, etc.)
  • Swaps expensive private WAN technology with single-source security
  • Unified traffic control, adjustable to your needs
  • Automated device management for easy access to cloud-based applications.

How Does SD-WAN Work?

SD-WAN overlap existing network – mostly the network, running on the top. This is done with the use of tunneling technology that helps to separate physical and logical network.

SD-WAN deploys a centralized controller that work as a single pane of glass for running the whole process. It is used to set and maintain policy. This policy works to control traffic paths, SLAs, failover, monitoring, etc.

The SLAs are the service level agreement based on application-specific information. Once policies are cleared, they will be forwarded from centralized controller to each SD-WAN.

Once the policy is forwarded, it logically starts monitoring the performance on a link. It drifts traffic founded on that particular SLA. At this point, we are no longer required to depend on a circuit outage to move traffic to a backup or redundant link.