3). Intro to SDN (Software Defined Networking) Basics–SDN & Openflow Architecture [VIDEO]

Software defined networking (SDN)

SDN (software defined networking) is highly correlated with NFV.

SDN is a big deal in IT and Telecom.

NFV is all about building up virtual platforms.

SDN is about making IP networks more flexible, more customizable, more programmable so that packet routing is possible with lots of flexibility and agility.

Imagine a router, a physical piece of hardware, specifically designed and manufactured for implementing software functions that allow us control over the delivery of our data packets at its core. SDN now allows us to extract the software function from the actual piece of hardware. Now, we can take this extracted software function and apply it to other hardware, or vice-versa if we wanted to. Hardware and software would be independent of each other.

SDN is based on this concept, but now we are separating the “brain” or the control plane, from the traffic routing or data plane. There’s a separation of software (control plane) from hardware (data plane/packet-forward plane).

This separation of the brain from the data plane makes SDN a very powerful tool for customizing networks on-the-fly. With SDN we can provision new bandwidth and define traffic fail-overs in new ways. This can allow you better plan for, “What happens if…” situations.

Sdn is all about the network and control functions for routing and policy definitions. in a very automated way. We will ensure that the IP and the network reachability are efficient.

SDN Architecture

SDN and NFV “both depend heavily on virtualization to enable network design and infrastructure to be abstracted in software and then implemented by underlying software across hardware platforms and devices”.

There’s a great series of videos on YouTube giving a quick intro to telecommunication cloud basics.

The videos feature Vikas Shokeen and are available in short 4-video series.

The third one is below with some basic notes.

3). Intro to SDN (Software Defined Networking) Basics–SDN & Openflow Architecture [VIDEO]

• Also see:
  • 1). Intro to Telco (Telecommunications Company) Cloud Basics, NFV, SDN, Architecture of Cloud Networks [VIDEO]
  • 2). Intro to NFV (Network Function Virtualization) Basics–NFV Architecture, ETSI, NFV ManO [VIDEO]
  • 4). Intro to Hypervisor, Docker & Container Basics–(VMs) Virtual Machines [VIDEO]

• Biblio:
  • [1] vCloud NFV Reference Architecture
  • [2] Tech Tutorial–Introduction to NFV: Network Function Virtualization
  • [3] Introduction to Network Function Virtualization (NFV)–Washing University in Saint Louis
  • [4] ETSI Network Functions Virtualisation (NFV); Architectural Framework
  • [5] SDN vs. NFV: What’s the difference?–Cisco