As SD-WAN technology is expected to provide and manage the remote links connecting a site with either headquarter locations or the public Internet, its stability and reliability is imperative. Therefore, regardless of any security capabilities, the main requirement of any SD-WAN is that it must be as stable, as reliable, as fast, and as flexible as the edge device that it is replacing. The scope of this Test Methodology includes security effectiveness, performance, stability and reliability, and total cost of ownership.

This Test Methodology describes how NSS will evaluate SD-WAN products to provide an objective and fair assessment of the technology.