Knock - IT Networking, Department of Computer Applications, SRMV CAS

  What is SDN? Software-Defined Networking (SDN) is a network architecture approach that enables the network to be intelligently and centrally controlled, or ‘programmed,’ using software applications. This helps operators manage the entire network consistently and holistically, regardless of the underlying network technology. WHITE PAPER NFV and SDN: The Next Step in the Evolution of the Networks The SDN Architecture is: DIRECTLY PROGRAMMABLE Network control is directly programmable because it is decoupled from forwarding functions. AGILE Abstracting control from forwarding lets administrators dynamically adjust network-wide traffic flow to meet changing needs. CENTRALLY MANAGED Network intelligence is (logically) centralized in software-based SDN controllers that maintain a global view of the network, which appears to applications and policy engines as a single, logical switch. PROGRAMMATICALLY CONFIGURED SDN lets network managers configure, manage, secure, and optimize network resour