SD wan (VPN)

A Software-defined Wide Area Network (SD-WAN) is a virtual WAN architecture that allows enterprises to leverage any combination of transport services including MPLS, ILL, LTE and broadband internet services to securely connect users to applications.

Functioning of SD-WAN

The SD-WAN appliance is generally controlled by a central server that defines the rules. This can be pushed down to the appliances at each site. This will be the Central cloud control panel.

Okstel SD-WAN is used to connect enterprise networks, including branch offices and data centres, over large geographic distances. SD-WAN solutions include a special device at every site. In all cases, it's where the VPNs / ILL / Broadband terminate and where the routing decisions are made.