VLSM & Route Summarization

[@lorinatidc]

5 years later and still better explained and faster to understand than my Cisco Cert Book and a Purdue Professor trying to. Kudos.

[@thenetworkingdoctors]

Thank you William!

[@makumfajeris]

Your tutorial is worth a million, with Your help, I got 100% from the VLSM summarization test !Now everything is clear and easy! You are the best teacher, thank You for help!!!

[@ZegerDest]

I just passed my first exam of CCNA! Thanks to your lessons I was able to do the subnetting and vlsm! Thank you soo much!!

[@18Wheeler-cf1mx]

I think you're a grate instructor, and because of your videos I will be able to take and pass the CCNA. Right now I'm doing my undergraduate work, but your videos are a great help to me. Thank you so much. You remind me of some of my Army instructors.

[@edmejia99]

This is the first video I've seen of yours and I have to say is, you're the man. You're the opposite of dull and very easy to understand.

[@CircaOwl]

Very easy to understand it this particular way. So many videos out there that are so full of fluff info. Thank you for this!

[@franklincastro8986]

I just wanted to say Mr. Diaz Thanks to your subnetting video and over 200 packet tracer labs it helped me to get on the right track to pass the CCNA this past month. You are a great instructor because I went to an "accredited college" that offers Cisco classes and graduated last January with the stress of not having my CCNA. I still didn't have the understanding of subnetting until I replayed your video several times....Thanks, I'm off to get started on my CCNP!

[@ortegalester]

Lazaro, I want to give you thanks for these videos. I'm studying for CCIE and your videos have been great refreshers. Keep up the great work teaching our network engineers of the future.

[@thenetworkingdoctors]

+L. Ortega ...thank you for your comment L. Ortega!

[@cashmny78]

I'm glad that you added the note in the description about confusion regarding whether to count by 1 or 2. After trying to watch other videos on VLSM with different instructors because of the sound quality, I soon found myself back here. That means that you're the best Doc!

[@AI-Awakes]

Viva La RASA! Great video from a very knowledgeable person. I used to teach a few years ago, and this is almost identical to the way I approach teaching. More of us should come forward and share the knowledge. These instructions are amazing! Gracias

[@thenetworkingdoctors]

Gracias Hector! ...en la Union esta la fuerza! Animaste y enseña lo que sabes...el mundo te lo va a agradecer! 📚 Déjame saber que enseñas y quizás te puedo ayudar.

[@cameronrolle7655]

Already got my CCNA but I still return to Laz videos for refreshers.

[@thenetworkingdoctors]

Awesome 👏

[@dmoua08]

RIP headphone users

[@nityadeepika1967]

dmoua08 😂

[@johnconstas5002]

Laz is one of the best CCNA instructors in Florida. Thank you once more for your dedication and commitment. Those videos are gold, great for any revision and any level. Best Regards John K

[@Jacob-eg3kv]

I came here for a quick refresher and I'm very impressed my good man. You have some awesome communication skills this was explained simpler here than anywhere else I've looked.

[@thenetworkingdoctors]

Thanks Jacob...and to think English is not my native language 😉

[@Jacob-eg3kv]

Makes it that much more impressive :)

[@SymbolicSplenetic]

You sir, are seriously one of the best instructors I've ever come across. I can't describe how thankful I am for the videos you've put up. I'm gonna buy your book ASAP, even though I've just switched from Networking to Programming. Cheers!

[@thenetworkingdoctors]

Van V ...thanks and Cheers to you!

[@Akmunra]

The Networking Doctors But you really do need a better microphone though.

[@thenetworkingdoctors]

I have one...this video is old! Look at the date it was put out. My newest videos have a better quality over all.

[@MarcIntes]

I have learned VLSM within 20mins of the video. Thanks alot. Now i am able to solve problems on my own without depending on my classmates.

[@abebicount4581]

great stuff, thanks doctor....a lot of the other videos are 60% pluff and 30% important and 10% head scratching, but yours is 100% stuff. I like the way you get the thing started without much pluff before it....get it goinggg...........lovely

[@thenetworkingdoctors]

Glad you approve! 😉

[@Yazed88]

man i was having a midterm exam about subnetting and vlsm and it wasn't clear to me until i bumped into your videos , Thank you so much !

[@thenetworkingdoctors]

Thank you yazed! I'm glad I was able to help 😉

[@joshuaeuceda4635]

Lazaro , Appreciate your passion, enthusiasm and commitment to the networking profession. The video was outstanding. Keep up the good work, and I look forward to subsequent tutorials.

[@nyeletimia1836]

i usually call you best of the best , you make things simple thank you very much

[@stevilza]

Thank you so much! I've been taught this at school and I just couldn't understand it at all (it's been weeks!) and with the help of your video I learned how to do it under an hour! You've saved me haha, great teacher!

[@thenetworkingdoctors]

Thanks Linda!....Hope to see you at my next HOA on my new "Learn with Laz" channel :)

[@michaelfelicianogonzalez9304]

Thank you so mutch man, I was struggling so bad with this but thanks to your videos I now have 2 ways of checking my work, thank you! I have 3 tests on Tuesday on CCNA, now I can get this done and go learn my Commands for the practical.

[@thenetworkingdoctors]

Glad this helped and good luck on your tests!

[@michaelfelicianogonzalez9304]

@@thenetworkingdoctors Thank you very much, I will do my best!

[@patsguy369]

Network ranges are so much easier to understand when you teach the "magic number" method. I do enjoy your videos.

[@marijanpranjic5200]

Best video I watched it is simply interesting, don't understand why people complain for audio

[@thenetworkingdoctors]

Thank you Marijan! I do understand about the audio thing, but this is a very old video, way before I thought of teaching online and taking YT seriously.

[@vincentduong838]

Thanks a lot these videos has help me out so much, I recommend everyone to watch the whole 50 minutes

[@thenetworkingdoctors]

I'm glad that I was able to help you out....continue with your studies and good luck in your future endeavors.

[@jonathanrutledge4626]

Laz you are AWESOME......I am learning more from you than class.

[@jeannetedeandrade6883]

I've been following you for the past two years and I still come to you when I need clarification on my studies. I'm preparing for the CCNA and I'm always inspired by your energy, enthusiasm and your passion to share your knowledge with us newbies. If I were closer I'ld come visit and pick your brain (do you teach online classes only?) Mil gracias por todo lo que ha compartido con nosotros los novatos. He comprendido mejor gracias a sus clases.

[@dodgebert]

I really wish you were a teacher at my university. That way I wouldn't have to attend class and then come home and watch your videos to understand the material. :) The way you explain it works! Thank you so much for your help. I really wish you had a way to donate or something.

[@Say0n]

Thanks Laz, I've been studying this CNNA stuff from different sources and your methods and the way you explain makes everything more clear. much appreciated.

[@thenetworkingdoctors]

Thank you Say0n!

[@thewezzley]

Finally, I am getting this stuff. Your videos have been a turning point for me! Thanks!!

[@beatzbyDAVE]

Your tutorial was ingeniously presented. It's a 100% from me. God bless you

[@NicholasVossVader545]

I have been struggling with this for the last 2 days, studding for my Net+ thanks a bunch.

[@thenetworkingdoctors]

Glad to be of help 👍

[@insomni40]

Laz, you are the man! I have several of your courses on Udemy! I use your courses to supplement my hybrid CCNA class that meets once a week.... Thank you for the great content and making it interesting "not putting me to sleep."

[@SomethingFromThePast]

Hi, dude I am really grateful for all your videos and all your work. I am going for my CCNA in the next year just finished exploration 1/2. My final for this class will be next Monday all your videos really helped me understanding the concepts of rooting and subnetting. thank you so much many greets from Germany nik.

[@MrMoAbdullah]

Thanks for the videos. I've been wanting someone to explain VLSM to me in a way that I could understand. Keep putting more videos up. Helps me through class!

[@Middlestepofficial]

I have to note that you are explaining very well and you really know how to transfer knowledge :) Excellent video! Straight to the point! Remind me of my uncle :)

[@thenetworkingdoctors]

Thanks Bruno! ....I do have to say that this is a very old video though, but glad it can still help.

[@whatsherface7]

Thank you so much for your videos; you explain these concepts so much better than my professor!

[@BanduTheGreat]

This video clarifies a lot of questions. I was wondering why I couldn't get those packet tracer challenges to work, now I know. Thank you.

[@ayushpandey2693]

Thanks Laz. It was really helpful. i needed a recap and didn't have much money and time as well for classes again. if i remember, earlier i used to do this VLSm by "2^q" method however it was all wastage of time as you said everyone should sought it out within 30 sec should focus on NAT and protocols parts. THANKS A TON LAZ.

[@MoveMrAlong]

thxs a lot doc. learned more in 40mins about vlsm then a week in class

[@misleyvaliente2101]

I love this guy!!!!! Since I saw his videos, I have learned a lot about Networking.!!!!

[@thenetworkingdoctors]

+Misley Cardenas ...thanks Misley!

[@thenetworkingdoctors]

hey dude, I'm glad I was able to help...good luck with your CCNA...remember that on October 1st, 2013 the new certification is coming out. It will have more stuff on IPv6 and other things that is not part of the current CCNA cert. But have no fear...I will be putting up new videos geared for the new CCNAX....again, study hard and GOOD LUCK!!!!

[@shashank2791991]

thanks for the videos these are very help full and you saved my lot of money. there are so many institute in india who are charging a lot of money for these course and not even teaching that clearly.keep it up. you are helping lot of student thanks

[@lop111ttt]

Great job sir.....this video helped me to clear all my doubts in the area of vlsm & route summarization.....actually i was a bit confused regarding this subnetting concept ...but after watching and studying this video its all clear now....thank you sir.....

[@Razziazor]

you are a lifesaver sir, i got vlsm down now, thanks a million

[@TheMaximmas]

If you came here for the route summarization and EIGRP command check 36:18

[@labcanabiz]

thanks buddy

[@VENIfromRUST]

Thanks! So much time spent on basic subnetting lol, could be a separate video

[@frankjr2365]

Glad I came across your channel. I am learning more from you than from my professor. Maybe I wont fail CCNA 1 now.

[@chilledchadilss4070]

OMG Finally i found what i was looking for...enjoy the videos. I dont even know how many times your vids saved my ass

[@thenetworkingdoctors]

Glad I was able to help Chad!

[@thenetworkingdoctors]

It's nice to know that I've reached those from the other side of the globe...Thanks!

[@Devenrow]

I must say this guy is a good teacher

[@thenetworkingdoctors]

Great Question, there is another way using exponents, but it will give the correct answer only if the value of the octet you are working in is 100 or above. I learned this the hard way, once I would get the summary address and placed into the router I kept getting errors, because the binary bits would not match up when using numbers less than 100. After practicing the binary method, you will start to see all you need is the 1st and last network and you can figureout the rest in your head.

[@donaldharris9215]

your doing it better than my instructor TY

[@SomethingFromThePast]

Thank you. I am really looking forward for your new videos. The other people here on youtube cant explain as good as you. They bring me to sleep.

[@draebern]

Super cool video. I really have problems with subnetting. I am just not getting it. But your video makes more sense, than most teachers does :) so thank you very much!

[@thenetworkingdoctors]

I'm glad I was able to help!

[@billkisstoure]

Your lectures are perfect, very helpful. Thank you

[@fourtysix7646]

Hi, network doctor you really help me a lot and i don,t know what can i do to give u THANKS. God bless you for us we this young upcoming Network Engineers.

[@paulochavez3558]

Thank you so much.. I do have one question though. Whats your max bench press?

[@Tom-wz3ks]

Thank you 4 the wonderful tutorial............ I totally get VLSM now.

[@starryblue4]

hi doc, All your videos and the way you explain is very clear. when i read alot of books i have a lot of confusion and questions(what's this?, how come?, where did he get this?, etc) but when i watch your videos regarding CCNA, i got all the answers(aha that's why). I remember when i first saw your videos regarding subnetting i've got my first "aha thats why" moments. Without hesitation hit the subscribe button. Thank you so much for your efforts for making these videos. I hope your got your CCIE soon, can't wait for CCNP videos. Still Preparing for CCNA exam.

[@hernushuman3494]

Just passed. Thank you your videos are always helpful and on point

[@thenetworkingdoctors]

Congratulations Hernus!

[@stevennguyen7941]

Thank you for the great video. It explains much better than my book.

[@09ldixon]

Thank you very much for this tutorial, much appreciated and very helpful! Keep up the good work!

[@thenetworkingdoctors]

+09ldixon ...Thanks for watching...and I will!

[@augustinea.sillah5355]

you made me understand subnetting better and now vlsm

[@sandeepjr7383]

u r just awesome bro.. i love ur teaching style... clearly understood the subnetting concepts,,, thanks alot man!!

[@lewishudgens]

Thank you sir, your a great teacher, and even though I'm just refreshing myself, Your video is great!!! THANKS AGAIN!! Lewis Hudgens

[@thenetworkingdoctors]

Thanks Lewis!

[@khaledsakkaamini4743]

thank you, sir, for these videos subnetting and this one you explained them in a really easy method I'm confident that i will pass my uni exams

[@rabindrarajkumar3283]

Have his videos and helping me a lot to pass new CCNA exam

[@rabindrarajkumar3283]

If you need a true teacher to teach the old fashioned way when teaching was teaching Laz is your teacher.

[@ghaith20247]

Thank you for this great teaching and simplifying.. Best regards from Iraq

[@ronytembler9961]

Perfect man, i really liked the video, But hopefully i wish you can just make the board more bigger. Everything is awesome, Thanks!

[@thenetworkingdoctors]

Look at when this video was created and loot at my newer videos. You’ll see the difference

[@thenetworkingdoctors]

I know...you are right!...but what I've explained to others that have posted similar comments, is that this was done a while back, and it really started like a fun project for me. My wife is the "videographer" and she did her best. But now were getting to a professional level and you should see a much better quality in Audio, Lighting and filming in the new uploads. Thanks for the feedback!

[@bartlomiejwulff1924]

Hey Laz, I really enjoy your vids! Nice strategy to tech your visitors about IP / routing etc. It helps me to survive my CCNA certification process :) Thanks a lot! Greets from Germany! P.S. and keep doing your thing, you are doing this very well!

[@thenetworkingdoctors]

+Bartek Wulff ...thanks Bartek! Although this video is quite old, I'm glad the information was helpful. Hope you subscribe to the channel, there will be new videos in 2017!

[@Depraved6]

thanks for the videos. 3rd week of my NSS course your videos really helped man. keep them coming :D

[@thenetworkingdoctors]

Thanks Scott...will do!

[@thenetworkingdoctors]

@nik k Great to hear that you passed the class and with an A!...and I'm very humbled that you hold me in such high regards. But believe me if it wasn't for your own commitment and dedication, no matter how much information I would give you, it wouldn't have happened. I can only do so much...it's those like yourself that make it happen. I know that you will definitely get your CCNA!

[@chaitanyaallada8649]

Thank you.... bcoz finally I understood the concept through ur video clearly

[@thenetworkingdoctors]

+chaitanya allada ...glad I was able to help!

[@cebastjaneliasson3778]

Thanks Doc, for good educational explaining in your videos. It really helps and clarifies. And thank you again for taking the time to share your knowledge, with us that need it. :-)

[@thenetworkingdoctors]

Always glad to be of service!

[@thenetworkingdoctors]

Sorry for the video quality...this was done a while back as a fun project. In my new video uploads you will see how we've evolved and that my videos are much more professional. But thanks for the feedback!

[@thenetworkingdoctors]

Well the default gateway is your routers interface facing your lan. On a PC you would type ipconfig. If your asking how do we calculate the default gateway, it would be an available ip address within the range of your subnet.

[@ashrafashraf3717]

Thank you sooooo much. I am really thankful for all these constructive and awesome videos. You are really great and I thank you again.

[@thenetworkingdoctors]

Thanks for your comment Ashraf...glad these videos are helping.

[@मोहितसक्सेनाएडवोकेट]

+The Networking Doctors

[@hiwotetadesse9051]

You are amazeballs Sir! Great refresher!! Thank you!

[@tejendra53]

each and every video i used to appreciate whatever it is:

[@samdc3000]

Best explanation of VLSM ever

[@thenetworkingdoctors]

Thanks Sam!

[@eliteamit1]

Excellent video, you gave a very nice way to understand VLSM, Thank you so much for this nice presentation . With Regards Amit, India

[@thenetworkingdoctors]

Sometimes I keep it simple, so that just about everyone can understand it....however, as my new videos are being uploaded, things will get a bit more complex...because I want everyone to pass the CCNA certification! This particular video (as you can see) was very amateur...since this whole KZbin thing started out more like a joke and/or fun experiment. We have evolved since then and have tried to make it more professional...but still keeping the fun aspect! It just wouldn't be me if it wasn't!

[@dragon258306]

Real clear explanation, you are a good teacher, keep it up! if anything, invest in a better mic so everyone can hear you better:D

[@thenetworkingdoctors]

Yes, I know....but remember that before April of 2013 my videos where ALL filmed without a tripod, with a NON HD camera and with a cheesy microphone....NOW, my videos are recorded on a professional HD Camera with a professional microphone and I think you will be able to see the difference. Before April 2013 I made videos as a JOKE for KZbin...all though I still make my videos in a joke format...I am now using professional equipment. :)

[@bonitoviegas113]

nothing to complain. it was such a good explanation. it help you move forward

[@FrancesChinonso]

Thank youuuuuuuuuu The Video really gave me a perfect understanding of VLSM

[@thenetworkingdoctors]

...and that is precisely my goal...that you can understand the material in a simple, fast and fun manner.

[@thenetworkingdoctors]

A lot of people get confused with that....that's why I made a video called "counting by 2"...it should clarify your concerns.

[@borisccna8916]

Love this stuff, at first it might look weird but its so simple. thanks for the videos man

[@rafaelpolanco7627]

Muy buenos sus videos todo muy bien explicado, sencillo y sobre todo muy natural, usted es un mostro saludos de cuba

[@JohnnyRipper70]

Dude, this is amazing. Very effective teaching, Thank you so much!

[@miy1756]

Thank you for this video! Its extremely helpful!

[@thenetworkingdoctors]

Your welcome!

[@Toslij]

this guy is great... love your lessons

[@Diryen]

Thanks so much for your class because I needed, now I'm understanding better this topic but It is a little complicated because I have to pay attention to use VLSM and I will could to present my test or exam for certification CCNA.

[@SomethingFromThePast]

Thx to you Laz, I got an A- on my final in my data communications class. In total a A in my class. Hopefully I can do my CCNA this year. I will be studying abraod in the US this Fall just need to find out were I can my CCNA there.

[@JuanCruz-cb1lf]

Great video as always! I have been in my CCNA course for about 4 weeks now and I just have a question about this. Do the router interfaces have to have their own network ID or can you just create network ID that gives you enough addresses to assign them to the router interfaces? Or is it just better to keep them seperate?

[@MrMoAbdullah]

Laz, you're a life-saver. Thanks!

[@byrpowel]

Yoooo this definitely helped me out a lot! Still going to take some slow learning, but it really cleared up a lot!

[@thenetworkingdoctors]

Thank you, and you are correct!...but this video was uploaded almost a years ago....you should see a drastic change in video and sound quality with my latest videos. Thanks for the feedback

[@marblehole]

I think you should change your school to "The King of Networking" :-) Thank you for the passion.

[@robcapazzi]

Great video, expect for the sound, but other than that I learned a lot, thank you for posting this video.

[@thenetworkingdoctors]

Yes, the sound & video were not the best back then. My new videos should be a lot better though!