This is a great article from Telecom Ramblings about SD-WAN and why ethernet is the best transport for it.
“One of its great virtues is its flexibility in delivering secure, connectivity over multiple transport technologies. So, for instance, if a service provider wants to extend its VPN business services to areas of its territory where it doesn’t have IP/MPLS technology, it can use SD-WAN over best-effort internet.”
See the article here.
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