SD WAN (Software Defined Wide Area Network) allows you to connect multiple agencies to multiple interfaces with an SD WAN capable firewall. The SD WAN firewall is application aware and automatically steers traffic over different providers depending on certain conditions.
As an example you could connect an MPLS network on a single WAN connection and connect to the web for the second WAN connection. With SD WAN the traffic would then dynamically route over either connection based on policies you define.
Overview
To understand how SD WAN works and just how it benefits your company it is very important first know the way things were configured previously.
Consider hot and cold taps with an traditional wash hand basin. Think about the hot tap (WAN 1 Interface) is coupled to the MPLS Network and also the cold tap (WAN 2 Interface) is attached to the Internet.
In the event the hot tap and cold taps are operated separately it is difficult to regulate the temperature and flow with the water as they are totally outside of the other. Similarly, ahead of SD WAN it absolutely was hard to mix, control and manage traffic (business applications) across separate independent WAN Interfaces (on this example MPLS and Internet) just like the water in the old wash hand basin.
Why’s SD WAN better?
SD WAN is quite as being a modern wash hand basin with the hot and cold taps combined in an an easy task to adjust mixer tap. The temperature of the water may be controlled and can be automatically regulated to offer you the best temperature of water constantly.
With SD WAN you will get granular treatments for traffic across all WAN networks with advanced flexibility and agility. As an example, you can define policies very often send traffic from your main business application in the MPLS network as an example but automatically switch to the Internet VPN if the MPLS network is congested or unavailable.
SD WAN transfers the duty of traffic management from physical devices to software and permits you to effectively and securely route visitors to remote locations like branch offices. Centralised control gives full visibility through the network and enables ease of management.
To sum up SD WAN will provide you with complete control over how you dynamically route and prioritise traffic according to application type and other factors including congestion and availability.
How do SD WAN benefit your business?
Lower bandwidth costs
Centralised network management
Full network visibility
Increased selections for vendor selection and connection type
SD-WAN benefits businesses by removing expensive routing hardware and instead provisioning connectivity and services from the cloud. Together with the increased need for cloud-based services in the current workplace SD WAN delivers a far more robust and reliable network.
SD WAN is really a much more flexible option allowing a company to scale connectivity along his or her business dictates which enable it to automatically adjust and steer cloud-based traffic over different routes when congestion or company failure occurs. This allows a small business to run an infinitely more efficient and cost-effective enterprise reducing bandwidth costs as needed without compromising availability. Businesses are effectively avoiding over provisioning which lowers overall WAN costs.
The centralised control enables changes to get implemented and quickly pushed out to network hardware including routers and switches.
After a preliminary investment SD-WAN can improve a business’s connectivity between branch locations, the primary office, data centres and the cloud while reducing running costs making lasting savings after a while.
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