What is SDN (software defined networking)?

aiden

Can anyone point me towards a good explanation of SDN?

Answer this Question

Answers

2 total
becker
Vote Up (4)

That's a surprisingly complex question to answer. If you want a thorough understanding, I’d suggest that you start with this video from Microsoft Learning Experiences. It’s about 45 minutes long, and there are 3 more (I think) in this series if you want to go even more in depth.
http://channel9.msdn.com/Series/Software-Defined-Networking-with-Windows...

For a more basic understanding (which still requires some background knowledge of the three conceptual planes of operation for a switch or router - Forwarding Plane, Control Plane and Management Plane) you might check out this article.
http://packetlife.net/blog/2013/may/2/what-hell-sdn/

In simple terms, SDN means decoupling the control plane from the forwarding plane and offloading its functions to a centralized, software based controller.

jimlynch
Vote Up (3)

Software-defined networking
https://en.wikipedia.org/wiki/Software-defined_networking

"Software-defined networking (SDN) is an approach to computer networking which allows network administrators to manage network services through abstraction of lower level functionality. This is done by decoupling the system that makes decisions about where traffic is sent (the control plane) from the underlying systems that forward traffic to the selected destination (the data plane). The inventors and vendors of these systems claim that this simplifies networking.[1]

SDN requires some method for the control plane to communicate with the data plane. One such mechanism, OpenFlow, is often misunderstood to be equivalent to SDN, but other mechanisms could also fit into the concept."

Ask a question

Join Now or Sign In to ask a question.
On the positive side, with the influx of cheap solar cells, the U.S. will be able to achieve its six-gigawatt installation goal this year.
The venerable GNU compiler wins the ACM’s Programming Languages Software Award while simultaneously coming under fire from the Linux creator
Be sure to show your sysadmin how much you appreciate him or her today - but keep it sane
The first third-party servers licensed to use IBM's Power architecture will be on the market early next year.
Instead of screaming fans and meat locker temperatures, data centers are going to chill with water.
Cisco this week expanded its data center arrangement with Microsoft with a multiyear sales and go-to-market effort for integrated products. The deal builds upon one agreed to 15 months ago, when the two companies combined cloud offerings under their respective Cisco Unified Data Center and Microsoft Fast Track 3.0 architectures.
Pennsylvania has signed a seven-year deal with Unisys to consolidate the state's data centers and create an on-demand, cloud computing environment
Frustrated by a lack of renewable energy and a purchasing system that's too complicated, a dozen major US companies have joined an initiative to force the government and utilities to change.
Cisco is considering joining a handful of companies, including Google and Microsoft, that have defined a specification for 25Gbps and 50Gbps Ethernet for data centers requiring greater than 10/40Gbps.
Clean energy is no longer just the bastion of crunchy granola types and companies hoping to improve their public image.
Join us:
Facebook

Twitter

Pinterest

Tumblr

LinkedIn

Google+