VLAN Trunking Protocol (VTP) Explained | Version 1 & 2

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VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol used for the management and maintenance of VLANS across a switched network.
Without VTP, if you need to add, delete or edit a VLAN in your network then you would need to login to each and every switch and enter the commands manually. That's not a problem if you have two or three switches, but it can become very time consuming when you have a few more.
VTP solves this issue by allowing all switches (within the VTP domain) to sync their VLANs together in a VLAN database. The goal is to have every switch running the same version of the VLAN database.
The switches do this by sending different messages to each other. These messages allow them to update, maintain and synchronise their VLAN databases.
Types of Message
------------------------------
Summery Advertisement
These messages are sent to let all the switches know the current revision number of the VLAN database
-Domain name
-Password
-Revision number
-Followers
Subset Advertisement
These messages contain VLAN information so the other switches can add them to their own database.
-Domain name
-Revision number
-VLAN info
Advertisement Request
These messages are sent when a switch needs to request a Subset Advertisement to sync it's database.
Requirements
------------------------------
There are some requirements that need to be met before the switches will sync their VLAN databases.
-Be in the same VTP domain
-Have the same VTP password if set
-Connect over a trunk
Modes
------------------------------
There are three different modes that can be used.
Server
-Can create VLANs
-Can send updates
Client
-Cannot create VLANs
-Can send updates
Transparent
-Can only create local VLANs
-Does not send updates
-Does forward updates from other switches
VTP Pruning
------------------------------
Pruning is a feature of VTP that can helps prevent unnecessary traffic from being sent to switches with no ports on a particular VLAN. The switches will 'prune' VLANs from trunks in order to reduce any unnecessary bandwidth and resource usage. They do this by sending join messages.
#ccna #cisco #networking

[@mattjoe67]

CertBros, I am speechless, I don't know how to thank you,but in college these professors DO NOT explain lesson clear they want to feel important and smart, and not helping the students, If you ask them a question they tell you to go to book, CertBros thank you very much for short, smart and clear way explaining It, LOVE YOU.

[@FarhanKhan-bw4bm]

Simple and to the point. That is how all the tutorials should be !!

[@Certbros]

Thanks Farhan! Just what I was going for.

[@FarhanKhan-bw4bm]

CertBros I think there is one more mode in VTP called OFF mode to disable VTP completely.

[@Certbros]

Yes that's right. On some switches you can disable VTP with the 'Off' mode.

[@VW_Fan]

Off mode in in IOS 15 only. It isn't in IOS 12.

[@ardentdfender4116]

The additional info here by all those who commented on their being an “OFF” mode in later is very helpful to acknowledge. Thanks.

[@zeynelsavari4923]

A pro on explaining, a pro with recording it, a pro with presenting it. Someone must increase your number!

[@Certbros]

Thanks Zeynel!

[@ardentdfender4116]

I agree with you man. His numbers will increase as people studying networking find his videos like me. And then find his videos so well explained both graphically in presentation but oratory explained as well.

[@johnallen970]

I'm so glad I found these videos. It's nice to be able to understand a topic thoroughly. I thought I was just gonna be able to read and pass, but I found out that wasn't gonna happen. But these videos are so helpful. They make info clear, concise, and to the point. You guys rock!

[@Certbros]

Thanks John! You're right, reading the books is only half the battle. A good video course, labs and practice exams should get you to a pass in no time. Good luck! 👍

[@ardentdfender4116]

Man I just want to really say this video was BOSS! All your videos are also BOSS. This was one the most confusing as hell topics I’ve come across so far in all of VLANS. You did a super damn great job in not only simplifying and explaining all of this, but with very great graphic and animation so well convey and e plain this that I totally get it. Your oratory skills in explaining all of it is totally on point. Whatever your doing in life, I hope your doing well at it. But please for all your subscribers and everyone that will eventually find your videos, please please Keep Making These So Well Explained Networking Concept Videos. I don’t think any subscribers here will disagree with me in the slightest on that. Your explanation of even difficult to understand concepts are in essence Nuts & Bolts Total BOSS!

[@Certbros]

Wow! Thanks for the awesome feedback Ardent. I'm currently working hard on a lot more videos. You will see a lot of content on this channel in 2020! Thanks for the support.

[@mingxindong3150]

I really like how short and clear when you explain how the vtp works , thank you so much.

[@Certbros]

Thanks!

[@diegonegri6050]

I'm preparing for CCENT and I've got to say, this video is absolutely great!! Clear and full of info!! Thank you!!

[@Certbros]

Thanks Diego. Happy it helped. Let us know how the exam goes!

[@MuhammadAnas-ct5om]

This channel deserves way more subscribers, on the point with the explanation and presentation. Without wasting any time ❤️

[@Certbros]

Thanks Muhammad. Need to get that RUclips play button! 👌

[@srinis9801]

The videos from cetbros are really tremendous. The most of the topics the way you explained was awesome. The people will love and start learning who doesn't have idea or interest in Networking !!! . We are really awaiting for more tech videos !!! Appreciate your great works

[@alebupeseyie5622]

The way you explained just wow, very clear and concise, simple and to the point.
Your video content is mesmerizing and awesome.
Thank You CertBros.

[@Certbros]

Thanks man!

[@luislimasbrazoban8352]

You are a god send

[@Certbros]

Thanks Luis!

[@aruizsilva]

Great video! The second time I watch it, now with a bit more knowledge on the subject, and you do a wonderful job at explaining everything. Congrats!

[@Certbros]

Thanks for the comments Antonio. Great to hear your are learning from these videos. Sometimes it can take a few watches.

[@xtrait2470]

Thanks Cart.... I usually does not comment on youtube videos but after watching this video I ad comment because this is the best video I have ever seen on VLAN explianation , conceptual and configration all things are sum up here

[@Certbros]

Thanks!!

[@lstanford23]

Wow, that was a great video! So informative. Thank you for helping me program my switch. I've liked and subscribed. Thanks again!

[@batmac2409]

thanks for the video, its been very helpful especially for those who learn visually. Simple and Straight to the point! Thanks a lot and keep it up

[@dinform999]

Yes! Simple but to the point...Best explained..
You cleared all my doubts for vtp..
Thank a lot ..

[@HarshKumar-me6ds]

Appreciate the clarity in the explanation. Please don't stop making them.

[@Certbros]

Thanks Harsh. Working on some videos now.

[@rajeevmishra9948]

I have watched so many videos but this video gives me the exact explanation what I expect . Thank you so much and i am also waiting for many more..

[@Certbros]

Thanks Rajeev!

[@ardentdfender4116]

Rajeev Mishra So true as well. I’ve studied this topic several times and all to end in some confusion. Go to RUclips batch many other lengthy videos to still remain somewhat unclear. Find his video here explaining same VTP and all the lightbulbs go AHA, I totally get it. I feel so much better now.

[@dr.a5646]

I do not actually need all that information, but I really appreciate the way you deliver it ... it is fun and educational to watch. Thank you.

[@Certbros]

Thanks Dr. A!

[@md.shafiqulislam5541]

thank you bro...for your most valueable tutorials

[@roberthromero4929]

Amazing, you explained in 17 min what my teacher could not in 3 hours, thank you very much for the content

[@Certbros]

That's great to hear! Thanks Roberth!

[@nyx42108]

Thank you for the videos 👍
I‘d love to see more of them coming!

[@Certbros]

Thanks Niklas! More will come.

[@junaidimdad7745]

best explanation. never commented on any video or like it but the way you explain is extraordinary.. made me do it

[@Certbros]

Thanks for the comment Junaid! Good to hear you liked the video!

[@KillTasTiK1]

Good stuff man. Clear and well explained.

[@mattmartindell9775]

Great video, helped put some things in perspective for me.

[@tg9460]

Great video. Easy to follow.

[@outoftheboxvlogs4659]

Everything explained very precisely and crystal clear!!!!

[@micha-8659]

Really well explained! Thank you so much!

[@SavannahTL]

solid info. I enjoy your videos. keep them coming.

[@Certbros]

Thanks Steve

[@JCumiskey]

Very clear and concise. I would love to see more videos from you for us starters

[@Certbros]

Thanks! Working on more videos

[@davidrigsbee1857]

Awesome video btw, you guys are great! Keep it up!

[@Certbros]

Thanks David!

[@South-east_Asian]

Great! explanations are very clear

[@snehalakarh]

You teach the vtp trunking very easy way... Thank you so much.

[@Certbros]

Thanks!

[@hollyfielding4531]

I don't often comment but I got a new Job and was feeling a little bit out of my depth, but wow thank you all so much for these videos I am really getting up to speed and feeling a lot better about myself.🙏🙏🙏🙏🙏🙏

[@ruck-tech7163]

Great video as usual I see, Thank You!!!

[@Certbros]

Thank you!

[@Freespch]

Best because it is simple and to the point. Graphical representation is icing on cake.

[@Certbros]

Thanks Aashir!

[@shiv_kumar_11]

fabulous video, thank you so much certbros

[@Certbros]

No problem. Thanks!

[@ashleycarnes1577]

A+ Tutorial (simplicity at its finest) Thank you :)

[@Certbros]

Thanks Ashley! Great to hear you liked the video.

[@Gautam-lj2wu]

I had my exam tomorrow and was not understanding this particular part.After watching the video, I am sure I would be able to do this if it comes in tomorrow's exam.Thanks for the help!

[@hewramanwaran6444]

Thanks a lot for your great explanations.

[@dcol3671]

Explanation on point. Thanks for clarifying.

[@Certbros]

Thanks

[@vedsachit604]

This is the best explaination on VTP ever. Thanks buddy

[@Certbros]

Thank you!

[@wahidullahwadan9547]

Excellent 👍👍👍👍👍👍 you are genis such a great explanation

[@user-kv7xs8my2z]

Amazing and absolutely clear ❤️

[@Certbros]

Thank you!

[@marilynmelendez2403]

Very clear explanation. Finally I understood!

[@Certbros]

Great to hear this helped Marilyn!

[@Manlikestevo]

You guys make tutorials interesting. Legit

[@Certbros]

Thanks man!

[@mannylenis9312]

Great Video. Easy to understand. Very well explained.

[@Certbros]

Thanks Manny!

[@Girlwithapurse03]

Love this video! Thanks man!

[@Certbros]

No problem! Thanks.

[@mtr4d3r]

Crystal Clear explanation

[@Certbros]

Thank you!

[@Ayoub-mp7sm]

I want to thank you so uch for this video #certbros your channel should have millions following this great content .

[@Certbros]

Thanks Alay!! One day we'll get there!

[@andyz1157]

Great explanation about VTP prunning. I like the idea to putting all on Transparent mode.

[@Certbros]

Glad it was helpful!

[@danielbenham1079]

Brilliant explanation, thanks to you mate I now fully understand this …. Thank you!

[@Certbros]

Thanks Daniel!

[@AnthonyJames7]

Great guide man thank you.

[@joncleason8503]

love u guys

[@johnconnor9787]

Awesome! Continue doing your awesome videos :)

[@Certbros]

Will do! Appreciate it 👌

[@Eddy2showss]

best tutorial so far

[@Certbros]

Thanks Adil

[@mohammadrezarostami350]

Nice and clear explanation about VTP, it was so useful.

[@Certbros]

Glad you liked it! Thanks.

[@liamjobark53]

awesome! thanks fo helping me study during this deppressing pandemic!

[@Certbros]

Thanks Liam. Happy to help where I can! Stay safe.

[@hamidaittaleb825]

very clear ! thank you so much

[@Certbros]

Thanks!

[@dreamfriend100]

Best Tutorial for VTP

[@deepak19bca]

Best tutorial till date 🤘👌

[@Certbros]

Thanks Deepak

[@OG-gv5hl]

Aweosme videos, so helpfull please keep them comming!

[@Certbros]

Thanks! More videos on the way 👍

[@sygfx]

Amazing explanation

[@kwabenadennis3803]

amazing teaching technique

[@alia8379]

Thank you so much

[@mehdisharifi9132]

I'm so glad I found these videos

[@Certbros]

Glad you're here Mehdi!

[@mohammadbahja4261]

Excellent tutorial, Thank you

[@Certbros]

Thanks Mohammad!

[@mariaaaxotiny]

Loved this, thank you

[@Certbros]

Thanks!

[@glenntembo2693]

awesome, thanks straight to the point

[@Certbros]

Thanks Glen!

[@EM-do1yi]

Bravo!🔥🔥

[@Certbros]

Thanks!

[@loneosama1]

Thanks for the great content

[@Certbros]

You're welcome! Thank you for the comment 👍

[@Hamza-Bit-Lab]

wonderful explanation Keep the good work.

[@Certbros]

Thanks Hamza!

[@M3nt4LC4t]

this helps me for my exam revision. thank you

[@Certbros]

Hows it going?

[@M3nt4LC4t]

@@Certbros pretty good.. with your videos I could understand much better.. i was taking CCNA3 exam paper btw :D

[@ashishghale9097]

simple and to the point

[@Certbros]

Thanks Ashish!

[@USAMP926C]

Are all of your videos like this? I just subscribed!

[@Certbros]

Yes they are! Thanks!

[@steelfalconx2000]

I'd heard not to use VTP before but I didnt really know why until now!

[@mushimiyimanagloriose3484]

best explination this totrl help me in my revision stdy thx!!!!!!!!!!!!!!!!

[@dstanif]

informative, thanks big guy

[@Certbros]

No problem! Thanks

[@bijayagiri5746]

offcourse simle and to the point...cool..loved it.

[@Certbros]

Thanks Bijaya!

[@Gksec-lr7xg]

Thank you CertBros

[@Certbros]

Thank you Darryl!

[@shebashow7572]

easy and simple well done

[@Certbros]

Thanks Sheba

[@ahmadsatar8587]

best videos.. keep it up

[@izzysalinas2747]

Great video and explanation

[@Certbros]

Thanks!

[@hewkins01]

really helpful!

[@Certbros]

Thanks!

[@Mazhar51]

great sir

[@Odim65]

NIce ,Simple and to the point.

[@Certbros]

Thanks Negatu!

[@yoda55555]

Thank you sir

[@aliibrahim5479]

thanks for your help

[@Certbros]

No problem!

[@talalakbarlaghari]

@Certbros: Excellent delivery and content:
As mentioned: VTP pruning must only be enabled on Server (SW A), but looking at SW B database, VTP prunning is also enabled !! Does this mean Client Switch will also participate in prunning process or it is just refelecting the sync database. Please comment .

[@notatestnetwork4541]

Great tutorial.

[@Certbros]

Thanks Ronnie!

[@NaveenUmariya]

Nicely explained

[@Certbros]

Thanks Naveen.

[@ernestoperez6703]

Thanks🎉

[@djuri00]

Thank you

[@user-mc9rt9eq5s]

Thanks for the awesome tutorial! I've a question: @5:50 "Links must be trunks" what does this mean?

[@ushanwithanage8835]

thank you

[@zohaibuddin7053]

thanks for the best explanation ....

[@Certbros]

Your welcome

[@foxtrot1787]

love it thanks

[@Certbros]

No problem! Thanks for the comment.

[@kirankumar-ml5mh]

Super bro

[@thuhinalourdes]

Thank you..!!!!

[@jy3985]

amazing explanation!!!!! maybe you can add rstp for the next one?

[@Certbros]

It's on my to-do list for sure!