IP Addresses and Subnetting
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- Опубліковано 27 вер 2024
- Struggling with IP addresses and subnetting? Let’s simplify it together step by step!
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WOW!...I look so young!!!
This is an introduction to IPv4 addressing and Subnetting. But the same method can be used for IPv6.
(Please excuse the quality of this video...it is very old and it was one of my very first videos when I started on UA-cam...this video started out to be a JOKE...and it eventually became a hit...who knew?)
For those of you who are looking for a more complete understanding of IPv4, HEX Conversions, Vlans, Routers & other courses related to Cisco and/or the CCNA certification, I'm happy to announce that I now have full courses available at the www.GlobED.net website.
Also, for those wondering why I start by 2...I have a YT video called "Counting by 2 and double as you go" that will clarify the method to my madness ;)
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bit.ly/IPbookB...
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10 years ago this video has been released. And it still rocks! Best explanation I have ever heard!
Most teachers on this subject look frustrated or confused. This man seems angry about it but it somehow really helps absorb the information. I have watched my college professors video on this, another random guy, and this one. (all 3 were around 45min) and this is BY FAR the best video on the subject. Thank you very much.
I'm not angry...I just like to speak loud & clear. I believe it helps absorb the information and you won't fall asleep :)
@@thenetworkingdoctors it works
@@thenetworkingdoctors I'm a loud person too and people think that I'm mad or discussing with others or that I'm bossy, nope. I'm just loud.
😂😂
@@Mtz2604 i understand that kind of tonne and its needed in learning
i was here in 2013 as a student and now i am back here looking for this video for my juniors as a network engineer.... Kudos to you sir
I TAKE MY CCNA EXAM TEST TOMORROW AND YOU LITERALLY JUST HELPED ME A TON
It feels like I'm studying a military strategy and tactics, but this is absolutely helpul. Thank you Sir!
LOVE IS IN THE AIR! and I am celebrating Valentine's day by giving 80-85% discounts for ALL my UDEMY courses. Use coupon code: VALENTINE until February 14th @ www.udemy.com/u/infothenetworkingdoctorscom - Coupons are limited....so let's spread the LOVE :) - Laz
44 minutes here are worth more than 90 in my class, thank you!
Theorak thanks!...glad it shed some light on this subject :)
Not sure if you guys gives a shit but if you are bored like me atm you can watch all the latest movies and series on instaflixxer. Been watching with my gf for the last few days xD
@Noe Bryce definitely, I have been watching on instaflixxer for since november myself =)
@Noe Bryce yup, I've been watching on instaflixxer for years myself :D
@jasmit kaur sahi ...when you count for subnets or hosts, you start by counting from 2 and double as you go (i.e.: 2,4,8,16,32,64....etc.). Also, when you count for subnets you count from Left to Right. When you count for hosts, you count from Right to Left. So, you always subtract 2 from the HOST side and you only subtract 2 from the NETWORK side if you are NOT using the Zero subnet. In my examples, the only time, I count by 1 and double as I go (i.e.: 1,2,4,8,16,32,64128) is when I count the BIT values in each OCTET. I do have a YT video called "Starting at 2 & Double As You Go"...this might clarify the method to my madness.
its rely helpful for me thank you sir
The Networking Doctors You're awesome man, thanks for the help! :-)
+The Networking Doctors
I've been out of the IT game for a few years, and even when I did work with submasks, I didn't have to do much unless it was giving a machine a static IP. Aside from that, all the networks were already built before I started working at my job, so all these lessons never really came up.
Im looking to get back into the IT industry, and wanted to brush up on my facts. I had no idea that creating subnets like this had so many facets. I admit, I had to watch this video at least 5 times in a row, pausing, taking notes, copying his diagrams....I figured out on my own about counting by doubling each number in the sequence beginning by 2 for subnets (left to right) and same but except right to left for the hosts; but I admit it took several times of me wondering why the hell he didn't start with 1.
It all makes sense now, reading these comments its funny how many people it threw off about why he began by 1 and then by 2; I finally understand sub networking now, and this video is the best i have seen on youtube.
Just a suggestion +The Networking Doctors but since this is the most popular youtube video on the subject and getting close to 1 Million views, I think it would be helpful to make annotations (like scrolling text perhaps, pop up windows?) explaining why a you switch from starting at 1's and then switching to 2's. The Bit Sequence vs. The subnet/host (2's) sequence. If you just added that little note in the video itself each time you do that then it would really be a perfect video.
Just a thought, but love your teaching style. You sound hard and strict in a way, like a military person really taking us all on a sub netting bootcamp. Your demeanor really gives us incentive to get this down and push us to think hard and logically.
This has helped tremendously, please continue putting video's like this on youtube!
Thanks everyone!
...and Jared Sanchez, I'm glad you got it!
I do have another YT video called "Counting by 2 and Double as you go" that explains why it's done in this manner.
Also, in the next few weeks, I'll be making a similar video since this one is over 3 years. However, it is the most popular video that I have.
This video started out as a sort of joke for UA-cam and it turned out to be the one that launched my online career as a Cisco Instructor...who would of thought? 😉
Can I add you on facebook or email? you make it wayyy too simple- shion cal zanzi is my fb name aweeesome!!
This is literally the best explanation on UA-cam of subnetting
Thank you very much.
thank you
vin diesel
vin gasoline
Yash Yadav 😂😂😂😂😂😂😂
more like Jonathan Banks
dude, he is the Rock of IT
This guy is awesome. I learnt many things from his courses.
"...the CIDR has nothing to do with the class of address." Thank you!!! This has been throwing me for a loop for a while.
Glad it helped Brandon!
Classless.
This video was extremely helpful!! I have a non-technical background and have embarked upon a late life career change. You are the best!
Thanks Forensic Kitty! ...age is never the problem, it's your state of mind ;)
Good morning, Mr. yesterday night in My Council What I subscribed to your VIDEONET I tell you, you have helped me a lot , Through your courses I know what we call the class of address , home address, hosts, Subnets broadcast address, bytes , and masks , all my félicitations.Que God gives you intelligence and wisdom to help us
Came for subnetting left with gains
Went through the Cisco Curriculum during school and this tutorial taught me much more than I learned doing that!! Thank you!
super many thanks i was struggling to undertand CIDR, networking and subnetting, but your video as made it more clearer. i will end up watching more of your videos in the future. which will hopefully assist & help me with my coursework and career in IT
Doc, you have an awesome teaching technique. Your video has helped me loads. Keep up the good work.
Awesome James...glad I was able to help ;)
At last I got to understand subnetting. Hats off to you my friend!
Thanks, Laz, I hope you're doing well. I have my Networking exam in 51 minutes and I haven't touched anything till now. I understood the core idea and the way to do it but I'm more confused if you start from the right or the left for what. Anyways, this video made me realise how good a teacher can be if you give your best effort. Your accent and the confident/ aggressive tone delivers the message right across the room waking up every slouching student.
Thank you so much 😊 And let me know when you pass! My email is: info@thenetworkingdoctors.com
Coming from app-dev background and wanted to learn networking deep but yet simple, OMG! This is the best thing I discovered on youtube in ages..thank you sir, you are a rockstar.
Thank you so much Rohit! 😉
why is he mad at me?
now i cant watch without laughing
thx dude
I'm not mad...I just want to make sure that you understand what I'm explaining.
rudeboysosh Agressive teaching LOL!!!
Because some of us (like me) understand and get it when they get yell at.
because when he puts u in a room with switches and routers if u cant do then see ya!!
amazing video! I saw videos from livelessons and cbt nuggets and they were missing some stuff. Your stuff is on point to make sure we know how to do everything w/ out any BS.
Thanks Jesse!
Thanks Pitbull, really appreciate it, especially since I have my final exam on the CCNA R&S course having to do with switching and routing next week!!
Love those dogs 🐕...let me know when you pass!
@@thenetworkingdoctors he didn't pass [*]
@@yellowkll2853 how do you know?
@@defaultgamer34857 because he didn't let him know
I'm a programmer and I must say converting over to networking and understanding IP and subnet. You sir need an award made simple and easy.
Glad to be of help!
I am in a networking class. Intro to routing and switching using cisco. My professor hasn't taught me anything and all of a sudden he gives the class a project to design a ip scheme. I paid for your online course yesterday, watched probably 20 (short) lessons. Now, I'm almost done with my project.
Thanks brother! ..I really appreciate this message and glad that my class was able to help you. So, now, all I would like for you to do is "pass the word around"...and let your professor know if he would like for me to do a live appearance for FREE
@@thenetworkingdoctors I already told my class about you and posted a link to your site on my class discussion board. I'll try and run it by my professor about the live appearance.
@@thenetworkingdoctors I was wondering. Are any of your labs downloadable. I'm having a hard time recreating the network based on the topology you show in your videos. Right now I'm working on your eigrp lesson. The 1841 routers you use don't have a serial port so I'm using generic. And I tried a cidr 30 (255.255.255.252) on my ip addresses but they are conflicting with each other. So I adjusted them a bit changing the third octete seemed to work. But now they aren't working on the 10.0.0.0 network. I'm assuming I would just need to do a few more configurations with eigrp. I'm sure I can figure it out so it will work. But I'm having a bit of difficulty.
Just found you on youtube and your a Godsend. Thank you much and i'll keep watching...
Glad I was able to help Timothy!
This video really helped me. Taught me everything I needed to know about calculating IP and subnets
Thanks Sean!
6:55
2012:Bless you
2020:is that corona?
🤣🤣🤣
I failed CCNA 640-802 a few years ago. Because I missed apply an access list. I got complacent I my current job I didn't retake it. I see you teaching the gns ccna course I will go ahead a buy, this is gold. Thank you very much
I love this guy and his t-shirt. The Network Doctor got me through my CCNA 1- 4 courses. I now have my Associates and working on my Bachelor's Degree in Cyber Security... Thank You!!!!
At the part where he is saying subtract 2 from the host side and asked why should we do that, I answered aloud. And then he said "Did you say that? Good." It was so 4th wall.
@Brahmanand Narsule
All you need to is focus on the mask they gave you.
252 allots for only 2 IP's
248 allots for only 6 IP's
240 allots for 16 IP's...this would be the best choice.
Hope it helped!
Laz
"240 allots for 16 IP's...this would be the best choice." - cmon laz. If the others are host counts ( i.e. ((2^(32-y))-2) ) a .240 would be 14 IPs not 16.
net ID and Broadcast ID 16 becomes 14. LOL noob
Jay Matthews
Paul Lampron
Oh I forgot to subtract two from the host side. But thanks for the mathematical equation. all I do is simply x.x.x.1111|0000 which equals 240 in the last octet, count by 2 from right to left, and double as you go till you get to the line and subtract 2. Oh by the way, lol, I was answering from a restaurant having lunch, through my Iphone...LOL!!!!!!
@Brahmanand Narsule
Please excuse my oversite, since I was trying to answer in a hurry is happened to all of us, but you do subtract 2 always from the host side as I explained in the video :)
Today I will call it "Let's Correct Laz Day!"
*****
What all of you don't know yet, is that I'm creating my own vocabulary words...heck! I may just decide to publish my own Dictionary...LOL! After all, who would of imagined that "LOL" would now mean "laughing out loud", or that BTW would now mean "by the way", or that a symbol like the @ sign will now be representative of the word "at". Therefore,@Networkified, in what will soon be known as "LAZ's Dictionary", the word "oversite" will soon be known to represent "oversight". BTW; not only was it a play using the word "site" ;) - but I was also typing from my phone at the time. I'm in front of my computer now! Please let me know if you find any other words that I can add to the infinite vocabulary for the new and upcoming "LAZ's Dictionary"... LOL! :)
This guy doesn't mass around, I would never think he does networking and could teach :) I guess don't ever judge the book by its cover.. !
On the serious note... Thank you so much for all the info.. Please don't stop sharing your teaching methods and examples of things... You simply are amazing at what you are doing!
Thanks Ma, don't worry about it, I get a lot of that same misconception. Unfortunately, most people do judge a book by its cover. However, I try to give everyone the benefit of the doubt and as a famous Psychologist said, listen to the other person as you might be able to learn something from them....it's been a great advice for me anyway.
i really enjoy your way of teaching. its blunt and straight to the point. Not going to lie, i have been struggling to grasp this concept in my ccna classes but after watching your vid i feel more comfortable with the process than i have felt in the last 8weeks of study. So thanks for the video :D
IP addressing and submitting is the Kryptonite of all IT professionals. So, don't feel bad...you are not alone, that's precisely why I made this video. To help those like yourself. A newer version will be coming out in 2016!
Thanks Mike from Breaking Bad.
I wish!!!!...I would be quitting teaching and would be now in the Mediterranean
lmao comment of the decade
@@thenetworkingdoctors what’s stopping you from living that life?
very thorough and understandable, thank you sir
Thank you William!
Feels like I'm back at school again with an amazingly passionate teacher that kinda scares you into passing.. ha ha.
Kick ass video. Top notch info!! The only channel I'll need for networking / routing setup.
It's important to add some dry humor and comedy in, it puts the brain in a much more receptive state.
That's probly why it's such a hit!
Love the clear and emphatic speech.
We need more Teachers like you bro!! Teachers that are passionate about there field.
Thanks man!!!! Legend!!!
This was great. He reminds me of the first CCIE engineer I studied under. Very no nonsense and to the point. Great job!
"did i memorize the hell out of it? yes I did" amazing =)
Why when calculating the /28 Network you started counting the mask bits at 1 but when calculating the network with 100 hosts you started the mask bits at 2? Am I missing something or was that just a mistake? Great video though very helpfull.
yeah.. i didn't got that too...
Thanks for helping me out! 😊
For further explanation you can watch my video called “Counting by 2 and double as you go” It should clarify your question
2020, 8 years later and still one of the best videos out there
massive thank you :)
Thank you 😊
Thanks so much Teacher! I'm currently a banker trying to initiate a career transitioning to IT.... but despite the fact that I'm still very green in computer networking, you made this course so easy and interesting for me to understand. I've subscribed to your channel and hope to be thoroughly bred by you. Thanks again.
Welcome MOA! I know you will do great 👍
Best explanation on YT just saying....
Thanks Afro Head!
Thank a lot this was a very important lecture for me . cause I am from Afghanistan.
Glad I was able to help 👍
Doesn't matter where you're from
I had left exact one hour to submit my lab...I watched the video and I DID IT IN 10 Minutes....thank you very much
The first 20 minutes is more helpful then the half years worth of networking lectures I've attended. There are some things you just cannot learn from PowerPoint slides!
Thanks a bunch! Very informative and to-the-point.
Thank you sir. The video was great !
Thanks Novin!
Why did you stopped making videos please upload complete networking videos.
firstly thanks for the great video. I just wanted to know why is it that sometimes you count including the one like at 15:33
but at 22:20 you count starting with 2?
+Junz Vids ...I explain that in another video called "Counting by 2's & Double as you go"
okay i watched that video and what i understood from it is that when counting the bit values you count in ones and that is used in order to calculate the range?
Thanks Sir, Being a VoIP engineer for 5 years now, I have been looking to learn subnetting for years..the best video I have ever seen. Now it made me very clear about subnets ! Appreciate it a lot.
+vamsi sampath ...glad to be of help vamsi!
Thanks so much really helped! My teacher doesn't teach he just sits and will read from the slides. It really helps to have an engaging person teach me this.
+Mido Ordo ...glad it helped Mido!
I don't get the comments saying "why is he mad at me" "why is he yelling". He sounds like a normal dude, just coz he doesn't look your average IT nerd don't mean he's angry.
Thanks Mr Robot!...I am normal right? 😎
I agree! It kept me focused. Thank you very much for your tricks.
I've already committed these numbers to memory, I've been looking for a method for subnetting that works for me for a while. with books, classes,boot camps. and every time they give me a very complex way of getting the answers. I got this shit down in a afternoon watching this video. you filled in so many questions I've had for so long. I never right comments on videos , but this video takes the cake.
Thanks Jermaine!
I’m glad that I was able to her 😊
Remember that although the video is very old, the information is still relevant today.
My husband has been teaching me this subject and at first I get it and then forget it. He gets frustrated and the. so do I and then want to give up. It’s just a matter of practice and reviewing for me. This is a great video for reviewing, thank you :)
انت رائع جدا thanx
Thank you Gogo Gogo...I think?
Thank you for this video. It helped me pass my Network+. 823 out of 900. This is the best IPv4 subnetting instruction I've run across. Thanks again.
Laz, thanks for your "down-to-earth" teaching methods, helps us (regular people) understand this so much better.
If i have a teacher like u in my class there will be little fun n too much seriousness which will help me n my mate
learn quick
Thanks Sir
With a short attention span, I could never sit through subnetting tutorials. When the numbers came up, I just zoned out. Your enthusiasm kept me paying attention though. Thanks man!
Thank you Rocks! ...I hope you were able to understand subnetting and apply it
I was lectured an entirely different way to subnet in my training for the ICND1 class today.. it completely screwed me up! I'm going back to this, this is the best way Laz thank you, and thanks for your dynamic teaching style. Never boring.
I don't know if you still check this UA-cam, but this video literally cleared up everything for me. Thank you so much.
+Andy ...thanks Andy! However, it's a very old video and there's one that it's newer in the channel. Hope you subscribed!
Never imagined I would see this long video. Every thing you told is important. Everything on point. Built more confidence. Hope I'll take less than 30 sec in subnetting questions.
You’ll get there 😊
Great great video. I have watched a number of subnetting and IP addressing videos and this is one of the best. Thanks so much for posting.
Thanks for your support! I'm glad I was able to help 😉
You have a gift to teach. I love how you change your tone of voice to get points across and it's really helping me in my Networking class. Thank you!!!!
I must say I appreciate the format of your videos more than a lot of the others that I have seen on UA-cam and other sites. Your methods are especially easy to understand for someone like myself that has knowledge of these topics, but has not used them in practice for a long time.
I am sure your videos will ensure that I pass my CCNA cert the first time around. Thank you for doing what you do!
Very clear unforgettable explanation. Then again my Cuban friends have that: clarity of mind, very practical and to the point. Plus the "angry" way of talking which is not
You are awesome, I wish all instructors were like you. I needed a miracle to get this and you are it sir!
Thanks hodan!...I'm glad I was able to help.
Best video on subnetting and IPv4. Read a lot about this, payed corses etc.. all bla bla bla about magic numbers etc. Now its just BOOM spot on!
Thanks a lot, grate video!
Thanks for the help.. I am in school currently and the way they taught it was so confusing. with the knoledge i already had you made it make since. You are a ROCK STAR. again thanks
Love the direct approach, delivery, and down to earth attitude. Takes the the "geek" out of this field. Thank You!
very nice informative and technique to do subletting question quickley in CCNA exams. well done sir.
Thank you Ali!
This video tutorial is very cleary to know about subnetting. Now I can go further with my home networking and my study. Thanks a lot.
Still one of the most amazing videos and professors. Always share it with my peers who are looking to learn subnetting better.
Thanks Chris, I appreciate it!
The way you explain the subnetting is so simple, thanks.
Helping me all the way over in Scotland before my test on Wednesday for some recap; helped me more than the slideshows that I ever got did! Thanks so much.
Hi Sir! wow! the way you discussed the lesson about the IP AND SUBNETTING is really awesome. I'm from Philippines and I really understand the entire discussion about this. I've never learned this from my University. But because of you, you gave me the idea about it. I'm looking forward for you next lessons.
+Yuhi Light ...thanks Yuhi!
Finally after two very long days studying the subnets I finally understand them. Thanks!
Glad to help!
Just watched this for extra help in a class I'm taking. I would like to say thank you for taking the time to do this video. Extremely big help.
I hope it helped you pass! 📚
im currently enrolled for an associates degree in cyber security. just wanted to say the videos have helped me run through these problems at a quick pace. videos may be ab couple years old but they are definitely some of the best ive com across when looking for information. i like the methods
Each one teach one sir...this video is spectacular...clear, concise...I love short cuts...
Thank you also for the free education...I couldn't be more appreciative
I will practice until I've absolutely mastered it...then I'll practice some more...
Easiest way I've seen without pre-made charts or calculators. Thank you!!
Thank You! This has been the best explanation of calculating sub-nets that I can find. Please keep sharing your knowledge.
This video made a difference in my life I have understood class c with no problems ... Thanks big man
Thank you than you thank you ... this tut was a real eyeopener for me.
I´ve read a few lectures but never understood how it realy works and than I watched your tut.
AWESOME
THis is the best subnetting video I have ever come across. Thank you so much
Wow, thank you!
Loved this video!!! Testing on 3/3/16 for IP addresses and Subnetting for CCNT and this is by far the best. I expect to ace the test! Thanks Laz
I swear I learn better when someone is yelling at me. Thank you. It really is easy when you break it down this way.
You’re welcome 😉
We all have different ways of learning.
It seems that yours is auditory which is enhanced when your hearing is stimulated by a high decibel frequency, which helps your brain 🧠 to retain the information. 🤪
Watched this video for the first time last night, and it was awesome......thank you thank you thank you!!!!!!!
Your lecture was awesome, i now understand IP address and Subnetting. Thanks
Glad to be of help 😎
Laz, thank you for putting this together. The video is easy to comprehend and follow. I will watch it couple more times to take notes and practice along this time. You work is appreciated!
Very helpful, closest I got to understanding IP. Excellent teaching.
Hi Laz, Reg. Critical networking issue. Wife started to doubt me. Since I wanna get the certification done and dusted, I've started to watch your videos as the world gonna end tomorrow. All your channels are excellent. I watch those at every meal time, shaving, in the gym, etc. I hope my marriage survives learning time and I can attend to my family again. Thank you for all the great classes. Krys.
+ARcTic STROKE ...your marriage will definitely survive. I was like you when I started and had a lot of support from my wife. Now, she's very happy that I do what I do and we're a very happy family. Your determination and perseverance will pay off!
Great video shared with confidence. Please forgive me, although I only watched the first 15 minutes of your video, it looks more suitable to someone who has seen subnetting and knows about IP to refresh rather than a novice to grasp. Don't get me wrong it has refreshed my memory and did the trick. thanks and all the best.
No problem Huseyin...I welcome constructive criticism. A new version will be coming in 2016!
Thank you so much, I am currently taking Network Engineering and have been struggling so so so much with subnetting. I took a bunch of notes from this video and think I have a pretty decent handle on it. I was struggling through my Cisco 1 course, I am definitely going to watch more of your videos to help myself understand. Amazing explanations, thank you again!
I love this guy, makes everything clear and simple. You the main man
Thank you Charles! ...I'm glad that this old video from the 70's is still helpful today as it was back then...lol 😉
thank you for your explanation; you did a much better job at explaining subnet masking to my students than i could've done.
WOW!...coming from a colleague, it's much appreciated! 😉
you're welcome. i plan on using you for my networking class for those things i have a hard time explaining :) :) the students liked you, too. a lot of them saved your video.
Brother, you are simply fantastic!! Thanks a lot!!!! It has clarified my doubts on subnetting. Planning to take my exam very soon. This helped a lot.
This was a Brilliant video. Explained it all in a way that was practical and I could understand. Thank you so much for this!
You're welcome Heath!
I just haven't been catching on in class. I've watched other UA-cam videos and...nada. Finally, after watching your video, something clicked. I can't thank you enough!
Glad I can help. All the best Tony
Thanks for the help!! Mental blockade thanks to learning networking in a foreign language ... I just needed to learn it from an awesome teacher in English
I am studying for the Amazon Web Services networking certification, and this helped a lot. Thank you!