Comments on Software Defined Networking (SDN) - Architecture and role of OpenFlow

In our previous article, we had a good overview of SDN as a technology, why it’s needed, and how IT industry is adopting it. Now, let’s get a layer deeper, and understand SDN’s architecture and the role of the Openflow protocol in the implementation of the technology.

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By: Pete

SDN is fine, but never forget that physical issues matter too.  You **can** define all sorts of networking without regard to the physical aspects, but don't.  I've seen complete failures when people used SDN to span a single subnet between 2 separate DCs with over 500 miles distance.  Sure, you **can** do stupid things, but that doesn't mean you should.