So what on earth is software defined networking or SDM in this video which you can find on youtube.
Martin Casado who is seen as the father of SD and an open flow and developed ethane as part of his thesis
at Stanford University says I don't know what a DNA is.
It's kind of become this umbrella term used for multiple visions of software defined networking some
of which don't include open flow at all he says as an example that it's become a general term as if
all networking is software defined networking that becomes tough.
Then if the people involved in the original development have said that the term has become generalized.