Software-Defined Networking (SDN) is a leading and most emerging for future networks architecture that is dynamic in nature, manageable, cost-effective and adaptable. It is ideal for high-bandwidth and dynamic nature of current applications. SDN decouples the network control and forwarding functions enabling the network control to become directly programmable and the underlying infrastructure to be abstracted for applications and network services.
SDN (Software-defined networking) is a new paradigm to configure and operate computer networks (especially data center networks) through a centralized software controller that dictates how the network behaves.
- What are the Benefits/Advantage of Software Defined Network.
- 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 resources very quickly via dynamic, automated SDN programs, which they can write themselves because the programs do not depend on proprietary software.
- Open standards-based and vendor-neutral: It is well implemented through open standards, SDN simplifies network design and operation because instructions are provided by SDN controllers instead of multiple, vendor-specific devices and protocols.
