Software Defined-Wide Area Network

 Software Defined-Wide Area Network

Overview of SD-WAN

Definition:

SD WAN* seperates a network equipement DATA Plane  from his CONTROL Plane, it is the same concept of virtualisation and likewise the main reason that lead to it`s implementation is basically to facilitate network management and operation.

Companies that use SD WAN have the ability to build high performance Extended Networks with lower costs although with this technology expenses will be reduced.

The most common technology that big companies use is MPLS* which costs companies lots and lots of money depending on the contract and the type of MPLS connection.

SD WAN combines Central Management and Redundant connection links, which influences on the bandwidth sharing accross multiple network nodes dynamically.

There are also other enhancements that include central controllers, integrated analytics and on demand circuit provisionning.

Using the cloud for network intelligence centralizes network security and policy management.

SD WAN Architecture 

* Acronym 
SD WAN = Software-Defined Networking in a Wide Area Network
MPLS = MultiProtocol Label Switching