What is software-defined networking (SDN)?

A graphical look at the technology behind software-defined networking (SDN)

Follow IDG TECH(talk) for the latest wireless updates!
------------------------------­----

[zingg]

SDN: use dedicated software to control many routers (instead of using the router's onboard control software). How hard is this to say?

[Justins-handle]

Think of SDN as a smarter way to manage how devices connect to the internet or a network, like your home Wi-Fi. Instead of a traditional setup where your router controls everything, SDN uses a clever "traffic cop" (central controller) to guide the data flow.

This traffic cop can talk to different devices, like switches and routers, and tell them where data should go, just like a traffic light guiding cars on different lanes. This makes it easier to set up and manage the network, sort of like having a smart system in place.

[djturtlefromthejungle]

SDN is more than separation of control plane from data plane, using centralized software for the control plane. SDN is three abstractions: distribution, configuration, and forwarding. The distribution abstraction allows us to turn the old school networking practice of having a protocol per problem into a software community ruled by standards and patterns. Configuration abstraction allows us to map abstract/disparate configuration elements cleanly onto physical hardware. As far as the forwarding abstraction goes, switches and routers might not even be the units of abstraction, it can be an entire data center fabric that’s the abstraction. Regardless, the forwarding abstraction always has two brains to write programs for: the management hardware (CPUs) and the high speed forwarding hardware (ASICS, etc). By separation of these concerns, we can reason and scale independently in each area. This leads to faster innovation via software because we can specialize as deep as we want to go in those areas. The core idea is to make the distributed control problem a logical centralized one, just like we have done for storage and compute.

[jadeedstoresupport]

I think its a great video because it has managed to deliver useful information about SDN (its histroy and use cases) in a very short and nicely animated format.

This video should be useful for technical and management people as well as business leaders.

[kso]

So far, even in 2021, this is the best video I could find on SDN. I even started dancing. It was informational, educational, and entertaining!

[AvinashKumar-qdzb]

I don't understand why YouTubers put loud background music in tutorial kinds of videos. It's good to have but please keep it on low pitch low volume. Thanks for the video though I couldn't follow.

[BigPicSolutions]

fantastic video, doing my net+ and this put it together so much better then the multiple courses i am doing.

[pablomora]

okay...but what is software-defined networking? Vague video

[lucasbuenodemorais]

Amazing video!!! It helped me a lot in my college article in the Industrial Network subject. Now I finally understand what is and how works the SDN tecnology.

[angelinagokhale]

thank you for this simplified tutorial!

[thepriyanka]

its very good brief video...but it bit fast if u really learning as a student..

[Gameryt-v-ishak]

Amazing, God bless you Sir for sharing information of Heard, Software

[mnoltes]

Thank you! Great information and very easy to understand.

[mikealive]

So is this to say that sdn uses virtualized software to override the hardwares firmware to manage the data? New to IT and studying for my A+, just trying to wrap my head around this.

[diemquyentran]

Hello, Can I apply Software Define Network for AI device like jetson nano ?

[gungajim]

Superb - thanks! What software do you use to make these great videos?

[RandomAlias]

play it at 0.75 speed then thank me later

[mtxpert]

You sound exactly like the red headed guy with the pony tail that does all the funny videos on facebook...

[t.j.barros.]

.... Congratulations on the tutorial, Friend + 1 like here !! .... One question only, is it possible to change the response when a request is made to a network recursive DNS Server, changing response IP to IP from another machine on the network (redirecting to another gateway, my network intend to put 2 gateway)? ....Thank you very much !! ...

[burgerwithasideofcheesesticks]

guys if you encrypt the data base you can get all the robux and!