Introduction to Cloud Overlay Networks - VXLAN

Introduction to Cloud Overlay Networks.
Twitter: @davidmahler
LinkedIn: / davidmahler
An overview of cloud overlay networks, why they are used and how. Focusing on VXLAN as the tunneling protocol and including a packet walk through and packet capture.
Links:
VXLAN overlay with Open vSwitch: • VXLAN overlay networks...
Intro to OpenFlow: • Introduction to OpenFlow
Intro to Open vSwitch: • OpenFlow flow entries ...
Intro to Mininet: • Introduction to Mininet
IETF Network Virtualization Overlays working group
datatracker.ie...
VXLAN IETF draft:
datatracker.ie...
Derek Chamorro (The Random Security Guy Blog):
www.therandomse...
Brent Salisbury (Network Static Blog):
networkstatic.n...

[@Wachpwnski]

I watched like 15 videos trying to understand this, and they all seemed over or under explained for my understanding. This one worked out perfectly.

[@DavidMahler]

That's awesome, thanks John!

[@praveenraveendra]

Can't believe this was published 4 years back with so much detailed information for current industry adaption. Thanks David!!

[@DavidMahler]

Oh man, 4 years, me neither ha. You're welcome!

[@arajadhyax770]

This is the real simple way of presentation where a person with Network knowledge can understand the concepts.. Thanks a lot Mr. David...

[@DavidMahler]

You're welcome!

[@asifavan]

Whenever it comes to clarify a conflict in understanding networking concepts. Mr. David Mahler is the man :) (bundle of thanks, once again)

[@DavidMahler]

Thanks again!

[@brandonbrewer2995]

I know this video is getting old now but this really is the best explanation for this I have seen. Thank you for the effort

[@DavidMahler]

Thanks Brandon!!!!

[@sourabhjain18]

Simply awesome..i tried to understand basics of VXLAN 5-6 times through multiple documents but couldnt build up the concept. after watching this video, in 10 minutes i was able to write my own document on VXLAN. Great work David and you made this complex thing very easy.

[@DavidMahler]

+sourabhjain18 That's awesome! I'm glad it helped you sort it out!

[@reachbhargava]

Finally... I understand what it is. Beautifully explained. Thank you

[@DavidMahler]

Bhargava N.B You're welcome!

[@shivfrequent]

Brilliant !! There cannot be a better video covering overlay networks covered in 15 mins , thank you David

[@DavidMahler]

Thanks so much Shiv.

[@vasyapupkin9773]

that wireshark part made everything crystal clear. god bless you

[@DavidMahler]

Great! Thanks for commenting!

[@harjos78]

The most simple explaination for vxlan... Just awesome.. Great job David..

[@DavidMahler]

TY!

[@shivangitomar5557]

Amazingly explained!! You're awesome!!!!

[@DavidMahler]

Thank you! 😃

[@harryh5582]

very detail and organized explanation.. thanks David!

[@DavidMahler]

You're welcome. Thanks for commenting!

[@olsonjrsala2474]

Very nice. After around 15 videos, this is the only video where I understood VXLAN concept. !!! Subscribed

[@DavidMahler]

Nice, thanks for commenting!

[@shangxindu7665]

Really clear to understand Overlay network. Good as usual.

[@DavidMahler]

Thank you sir!

[@pradeepvaradarajulu144]

Very good article David. Keep it up. Because of your article I had good insight into OVS and Overlay Networks. Thank you

[@DavidMahler]

Pradeep Varadarajulu Great! Thanks Pradeep.

[@rajvidesai]

You made it sound so simple. Thank you very much for the straightforward explanation of the complex topic.

[@DavidMahler]

You're welcome!

[@Spoonfork1]

Although this video is old, I just started learning NSX and would like to say that I think this is the best explanation out. Well done and Thankyou!

[@DavidMahler]

I should probably learn NSX too at some point ;-).

[@DavidMahler]

Thanks for the comment!

[@godfreytan1001]

Simply excellent explanation. The wireshark demo was the highlight!

[@DavidMahler]

Awesome, I'll keep that in mind, thanks!

[@KiranDevraaj]

Sir you are simply awesome. U make complex concepts understand without any confusions. Thank you very much.

[@DavidMahler]

+Kiran Devraaj You're welcome! And thank you for the comment!

[@91harshal]

Excellent stuff David. Keep it up. Will surely watch it one again.

[@DavidMahler]

Awesome, thank you!

[@williamwang8170]

It is great! I finally knew how VXLAN works! Thanks David!

[@DavidMahler]

Happy to help!

[@samuelketechie1238]

This is the best vid and tut on VXLAN ever. Thanks so much....

[@DavidMahler]

Thanks!

[@iforelsebiz]

Thanks David! This 15 minutes short lecture saved my whole day.

[@DavidMahler]

Nice, good to hear!

[@thereddevil419]

very impresive ,I take as my network lecture presentation,thanks,David

[@DavidMahler]

Chillance Zen OK, glad it is of use for you.

[@thereddevil419]

David Mahler surprised that openvswitch does not implement multicast for vxlan ,will this feature be added in the future ?

[@DavidMahler]

Chillance Zen OVS with flow entries just does what a controller tells it to do with multicast....or by default in "normal" mode floods multicast.

[@michael30000]

Probably the simplest explanation out, well done and thanks.

[@DavidMahler]

You're welcome!

[@csudaya]

Thanks a lot David . The information is put in a nutshell and wireshark demo completes the understanding . Many many thanks !

[@DavidMahler]

Great, you're welcome Udaya!

[@NeilSobers]

Thank you very much ........... Such a complicated topic explained in such simple manner. I was really struggling with the concepts --- every link went very technical. This explains the concepts in a simple to understand manner, without going into the details ... Now, I can pursue the other links armed with this link. Thanks a lot. This made my job so much easier.

[@DavidMahler]

Thanks Neil. That was certainly my aim in this and other videos. I feel the same way about various topics where it's sometimes hard to find a intro to start with.

[@ajitmohanraj]

Very nicely done David - thank you !

[@DavidMahler]

Many thanks!

[@sumanthreddykarri]

Very well explained, David!

[@DavidMahler]

Thanks Sumanth!

[@rafaelcardonagarcia6418]

simply excellent, thx David!

[@DavidMahler]

TY!

[@pandagamingyt641]

An elegant display excellent thanks for the video

[@DavidMahler]

yw! Thanks for the comment!

[@CliveBixby-t8t]

Thank you so much! needed this

[@DavidMahler]

yw!

[@kodzoagbedanu1694]

David, you are the best Instructor out there. Amazing video!

[@DavidMahler]

Thank you!

[@ppvshenoy]

Thank you, David for awesome explanation of VXLAN concepts. It cannot be any clearer :-) Yours is by far the best explanation I've seen. Much appreciated.

[@DavidMahler]

That is great to hear, ty!

[@aniliskcon]

Nice approach to explain VXLAN

[@DavidMahler]

Thank you!

[@princemohan99]

very good step by step explanation. thank you

[@DavidMahler]

You're welcome!

[@jonathansage6729]

David, great presentation. It helped clear up some of my confusion in my efforts to understand VxLAN. The packet walkthrough and Wireshark capture were especially helpful.

[@DavidMahler]

Thanks for the comment!

[@akk2920]

Complex topic explained in super simple way. I am fan of yours. Thanks for this video !!

[@DavidMahler]

Thank you!!!

[@mgprasad82]

Good diagrams are key for explanations.. well done with diagrams and presentation...

[@DavidMahler]

Thanks Ganesh - I do spend a lot of time trying to get those right!

[@TerryFundak]

Great Job David! By far the this clearest and most complete day in the life of a packet for VXLAN. I needed just a few of the point but it was great to get the complete framing of the answer I was looking for complete with a drill down into the encapsulation of the pack with Wireshark showing the very same example complete with the VXLAN decoding. Awesome, really! Your model of how to demo network complexity of illustrate should be taken as a standard!

[@DavidMahler]

Terry Fundak Thanks a lot for the extensive feedback. I try to present the way that I would want to learn it.

[@itserin1541]

excellent introduction on Vxlan .

[@DavidMahler]

Thanks!!

[@weygu]

Amazingly clear and profound, Thanks David.

[@DavidMahler]

You are welcome!

[@nadirslh60]

David, saw it for the first time today, but its still in fashion :) Great job on breaking down Overlays. Thanks sir.

[@DavidMahler]

Ha, time goes so fast! You're very welcome!

[@MohGab]

I like how he explained VXLAN good job Dave!

[@mthangav]

Well explained..you made it very easy and simple.thanks

[@DavidMahler]

That's great to hear. Thanks Thangavel!

[@michaeljsaenz]

great job on breaking down vxlan!

[@DavidMahler]

michael saenz Thanks Michael!

[@nithinkrish]

Very nicely articulated. Thanks a lot

[@DavidMahler]

Nithin Krishnan Thanks Nithin! ...and You're quite welcome...

[@lenyfreeman3807]

Damn, that was good. I'm gonna watch it again. Thank you David Mahler.

[@DavidMahler]

Thanks Leny!

[@jetmelt]

I agree with other commenters succint and clear. I really liked the wireshark portion, icing on the cake. 10/10

[@DavidMahler]

jetmelt Thank you sir!

[@clementduval3917]

brilliant indepth explanation !!

[@DavidMahler]

+Clement Duval Thanks a ton!

[@mehdiramezani7972]

Could not be explained better than this. Well done!

[@DavidMahler]

+Mehdi Ramezani Thanks so much for the comment!

[@renmin114]

Really like the openging, two castles and peagon messenger...

[@DavidMahler]

HAHA, thanks! I always wonder if this one was too cheesy.

[@rameshyanamandra2557]

Great content. Thanks David

[@DavidMahler]

You are so welcome!

[@hummer-k1k]

Best explanation ever !

[@DavidMahler]

Thanks!

[@rougearlequin]

Great video👌I Specially liked the wireshark details

[@DavidMahler]

Nice, thanks!

[@jamesjungnz]

Excellent !!! Thanks. The best explanation for VxLAN.

[@DavidMahler]

James Jung Thanks James! I appreciate that comment!

[@dipan246]

Superb explanation. Thank you.

[@DavidMahler]

You are welcome!

[@ringydingydo]

Thank you so much! The fog is gone. Needed this clear foundation!

[@DavidMahler]

ringydingydo I'm glad it's lifted!

[@bennasrrim9571]

well presented and well explained , easy on the eyes . good job David

[@DavidMahler]

Thanks!

[@ashoknair6557]

David, excellent presentation and very well explained. Thanks

[@DavidMahler]

+Ashok Nair Thanks a lot! ....and you're welcome!

[@cftn8885]

This is excellent. Well done.

[@DavidMahler]

Thanks Nathaniel!!!!

[@robertlkraft35]

Thanks! Been looking for a clear explanation of VXLAN. This was it.

[@DavidMahler]

Awesome!

[@harshavardhanhari]

Thanks for taking time for helping people like me :)

[@DavidMahler]

+Harsha Vardhan You're quite welcome, thanks for taking the time to comment!

[@DolevMiz1]

Helps me a lot! Thank you David, looking forward to more videos

[@DavidMahler]

Great, thanks Dolev. Researching for the next one (they take a while to research and make in spare time)

[@deepak7ravi]

This is such a steady explanation of the concept. Thank you so much!!

[@DavidMahler]

+Deepak Ravi You're quite welcome, thanks for the comment!

[@vaibhavsood12]

Very nicely explained!

[@DavidMahler]

TY!

[@12rustytrombone]

Great job explaining ... this was broken down to the T!! Very understandable !

[@DavidMahler]

Thanks!

[@vedantanand343]

Great content. I was confused about VxLAN and this video made it hell lot easier. Thanks !

[@DavidMahler]

Thanks!

[@32sachin]

Very good explanation.

[@DavidMahler]

Thanks!

[@adamnizar9083]

Nice explanation, Thank you for this video

[@DavidMahler]

Thanks for the comment!

[@ahmed9483]

very nicely done with real world example. BTW pretty cool tone!

[@DavidMahler]

+Ahmed Ali Thanks! Appreciate that!

[@omarmemon1039]

Wonderful video. Things were explained in such a simple language. Thank you SIr!!

[@DavidMahler]

Thanks Omar, I really appreciate the comment!

[@jovan88]

Thanks for the video. Really clear and easy to understand.

[@DavidMahler]

Great - I'm glad it was clear thanks for the comment jovan.

[@dstooke]

Great video - beautifully succinct and clear. Much appreciated.

[@DavidMahler]

David Stooke Hi David - You're welcome! Thanks for the comment!

[@vishnuvenkatesh8300]

Phenomenal video - no other video or article explains things as well in layman terms. Maybe you could have a sidebar slide about the OSI layers, just so your viewers are completely informed.

[@DavidMahler]

Thanks! Good idea, but with the encapsulation required it would be an OSI stack inside of an OSI stack, could be a little confusing perhaps?

[@ramasubbareddy6147]

you are awesome sir.... very good explanation of overlay and underlay networks with vxlan tunnel encapsulation,,, I think your favourite colours are red and blue... since you have used for introduction of openstack neutron video.... keep going endless...

[@DavidMahler]

Ha - yes I do keep using the same colors in my diagrams. Thanks Rama!

[@harishks99]

beautiful explanation !!

[@DavidMahler]

Thanks for subscribing!

[@birjumodi4409]

Bravo David... exactly what I was looking for. Thank you for duming it down

[@DavidMahler]

Thanks!

[@abeymathew10]

Excellent explanation David. Thanks !!

[@DavidMahler]

You're quite welcome! And thank you for the nice comment!

[@shahadatanwar4109]

Great explanation

[@DavidMahler]

Thanks!

[@LimsaBob]

Nice video, well explained. Thank you !

[@DavidMahler]

LimsaBob You're welcome!

[@Jayreed4Jesus]

This was awesome man. Honestly. So easy to follow. One of the best network trainings on this topic I have heard/watched. :-)

[@DavidMahler]

That's great to hear, thank you Jayreed!

[@Jayreed4Jesus]

David Mahler you're welcome David!

[@Audreylin29]

Great video, thank you for the insight!

[@DavidMahler]

Thanks Audrey!

[@rmandar16]

Nice presentation David!, very well explanation with the castles analogy!

[@DavidMahler]

+Mandar Raibagi Thanks!

[@kmrvinod59]

Very useful..

[@zennicliffzennicliff]

Great work, David! Thank you!

[@DavidMahler]

Thanks very much!

[@bublajs10]

I'll be honest, NOW i finally understand how its works! :) thanks David, keep it goin :)

[@DavidMahler]

Awesome, can you fill me in then? ( I always forget how everything works ;-) ). Thanks for commenting!

[@mrSaiHere]

Excellent video!

[@DavidMahler]

+mrSaiHere Thanks a lot.

[@nwputra]

Thank you for the clear explanation. Very good indeed !

[@DavidMahler]

You're welcome!

[@origill1098]

Excellent introduction. Thanks!

[@DavidMahler]

+Ori Gill YW!

[@PrashantSharma-ql4yb]

Great video, Thanks for making a complex topic simple and easy to absorb. Subscribed!

[@DavidMahler]

Awesome, thank you!

[@VijayKumar-zi3km]

Very informative video..... Great content with a clear solution.. Thankyou so much

[@DavidMahler]

You're very welcome!

[@shoaibddl]

David, Thanks for awesome explanation, this is far better from one of cisco Webinar where I struggled to understand vxlan. Please create videos on how we can implement the same on cisco 9K.

[@DavidMahler]

+Shoaib Sheikh Thanks for the feedback!

[@yadayadajn]

Nicely explain! Good video.

[@DavidMahler]

Thanks a lot!

[@chunhaowang7459]

That was a great explanation. That such complicated concept was explicated by a such vivid example. Thank you so much, David! Also, I think VxLAN overlay technology is quite familiar with MPLS VPN, VTEP looks like PE and VNI is VRF.

[@DavidMahler]

+Chunhao Wang You're welcome! Yes it is similar to MPLS!

[@EAdams-BXR]

Thanks! Great video, you explained the technology very well.

[@DavidMahler]

Thanks for the comment!

[@dylansheehy8987]

Great video. Well Done!

[@DavidMahler]

Thanks Dylan!

[@markkavanagh8318]

Great video - thanks!

[@DavidMahler]

You're welcome Mark!

[@brajesh42]

Awesome Job Thanks for making these networking videos. keep them coming

[@DavidMahler]

Thanks Rajesh!

[@PedroJMontero]

Good explanation.

[@DavidMahler]

Thanks Pedro!