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SDN Explained Through the Analogy of Maps, Routes, and GPS

Sure it's a little over-simplified... almost all analogies are.  But I think Juniper's David Noguer Bau makes a helpful metaphor for how today's networks work and how the software-defined networks of tomorrow will work.

SDN for Dummies: Routes, Maps and GPS

There are analogies in his post that fit:

  • Today's networks
  • Provisioned networks
  • SDN
  • SDN as an overlay
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