Software Defined Networking ( Sdn ) Essay

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Software Defined Networking (SDN) is a way to construct networks virtually with software that can be hosted on one machine. These software can solve issues such as cost, scalability, and security. Software-defined networking is an approach to computer networking that allows network administrators to manage network services with lower-level functionality. SDN is meant to address the fact that the static architecture of traditional networks doesn 't support the dynamic, scalable computing and storage needs of more modern computing environments such as data centers. This is done by decoupling or disassociating the system that makes decisions about where traffic is sent from the underlying systems that forward traffic to the selected destination . SDN was commonly associated with the OpenFlow protocol since the latter 's emergence in 2011. Since 2012, however, many companies have moved away from OpenFlow, and have embraced different techniques. These include Cisco Systems ' Open Network Environment and Nicira 's network virtualization platform. SD-WAN applies similar technology to a wide area network . History The origins of software-defined networking began shortly after Sun Microsystems released Java in 1995. One of the first SDN projects was AT&T 's GeoPlex. AT&T Labs Geoplex project members Michah Lerner, George Vanecek, Nino Vidovic, and Dado Vrsalovic leveraged the network APIs and dynamic aspects of the Java language as a means to implement middleware networks.
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