A Survey on Software Defined Network

Traditional networks are based on static configuration are improve to the Modern high speed network of dynamic configuration. Now day's the computer networks are modern, more difficult and complex, based on dynamic configuration [2] and traffic management challenges [3]. These challenges can be require the large number of connections and various switches, routers and firewalls that are connect with each other. To accomplish these tasks and various traffic challenges, SDN can be easily and confidently used. When SDN is applying to NFV (Network Function Virtualization) can help in addressing the challenges of dynamic resources allocation, resource utilization and resource management [6]. The architecture of SDN is focused on some additional security requirements and threats issues because of newly deployed infrastructural entities [7]. SDN can also be requiring the various improvements [2] in the Network Management tasks. In the network management, SDN focus on changes to network condition and state. SDN provides the support of high level of programming language for network configuration. This paper is based on the improvement in networking, traffic control management, congestion management, configuration management.