I went to the Appleton Lecture at the IET (my institute) this week; here it is as a webcast and well worth watching. The first half is all about the history of packet-switched networks but the meat of it is the second half were he talks about software defined networks.
Software-defined networking (SDN) is an approach to computer networking which evolved from work done at UC Berkeley and Stanford University around 2008. SDN allows network administrators to manage network services through abstraction of lower level functionality. This is done by decoupling the system that makes decisions about where traffic is sent (the control plane) from the underlying systems that forward traffic to the selected destination (the data plane). The inventors and vendors of these systems claim that this simplifies networking. SDN requires some method for the control plane to communicate with the data plane. One such mechanism, OpenFlow, is often misunderstood to be equivalent to SDN, but other mechanisms could also fit into the concept. The Open Networking Foundation was founded to promote SDN and OpenFlow, marketing the use of the term cloud computing before it became popular.
Appleton Lecture 2014 - Software Defined Networks and the Maturing of the Internet
2014-04-30 00:00:00.0 News Channel