Free CCNA | Subnetting (Part 1) | Day 13 | CCNA 200-301 Complete Course
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- Опубликовано: 3 июн 2024
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This video, day 13 of my free CCNA complete course, is an introduction to subnetting, focusing on how to subnet Class C networks.
In this FREE and COMPLETE CCNA 200-301 course you will find lecture videos covering all topics in Cisco official exam topics list, end-of-video quizzes to test your knowledge, flashcards to review, and practice labs to get hands-on experience.
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0:00 Introduction
1:19 Things we'll cover
1:53 IPv4 Address Classes
6:12 IPv4 Address Assignment
9:19 CIDR
12:01 Number of usable addresses per subnet
17:46 CIDR: /31
20:12 CIDR: /32
21:10 CIDR Notation
22:27 Subnetting Scenario
26:19 Quiz
#cisco #CCNA 
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ERRATA: At 18:27, '203.0.113.0/30' under the diagram should be '203.0.113.0/31'. I copied the slide and forgot to change that network address!
I noticed that mistake. no problem
Watching this right now, also noticed thank you for confirming. also Thank you for the great content helps me a lot.
S
Yeah, we noticed. You taught us well :D
I paused to come and check the comments :P
Message to all learners, please be patient and just be thankful to the great teacher!
Thank you for this comment :)
many students are lost in schools just because some teachers make it hard while explaining things in classrooms .
thanks so much for making it easy for us. no exaggeration, you are the best.
Thank you, so glad to hear you like the videos!
The best thing you can learn in life is the art of finding THE good teacher for each subject. Jeremy for sure is mine for Cisco stuff
This is making things soo much easier to understand. Thank you!
I see a bunch of answers already but..
192.168.1.0; 192.168.1.1 - 62; 192.168.1.63 */26
192.168.1.64; 192.168.1.65 - 126; 192.168.1.127 */26
192.168.1.128; 192.168.1.129 - 190; 192.168.1.191 */26
192.168.1.192; 192.168.1.193 - 254; 192.168.1.255 */26
Perfect answer, well done!
This was helpful, Thanks!
nice man👌
I know I’m years late but why did it go from 62 to 126 I understand it’s usable addresses and the next step on binary but why does it do it to solve the next one?
Never mind I get it
I came here randomly searching subnetting explanations. Looked this video and the next one through, and finally I decided to do the whole series from the beginning. The best thing a teacher can hope for is when students ask for more. Great work, Jeremy!
I´m not a English native speaker but I´m preparing for TOEFL and CCNA 200-301 in this year, with your videos I kill 2 birds with 1 stone. Thank you so much !!!
how's the studying going!
Jeremy, thank you so much for this course! I passed my exam yesterday and I wouldn't of been able to do it without your help and boson! There is no course like this one! Other courses I have tried in the past do not compare to this one!
congs, how long did you take to study the course?
@@isaacmudangi9137 I studied it for about 3 months
thanks let me put in the effort too
I did not watch part 2 yet but I'll just drop my own answers about the quiz based from the learnings I've garnered in your video:
CIDR = /26
1. usable addresses = 62 (2^6 = 64 - 2)
2. network address of subnet 1 = 192.168.1.0
broadcast address of subnet 1 = 192.168.1.63
Subnet 1: 192.168.1.0 - 192.168.1.63
.1 (first usable); .62 (last usable)
Subnet 2: 192.168.1.64 - 192.168.1.127
Subnet 3: 192.168.1.128 - 192.168.1.191
Subnet 4: 192.168.1.192 - 192.168.1.255
awesome
right
do subnet 2 - 4 also have their first and last IP address reserved for network and broadcast address?
@@chrographyyes off course
Yes ofcourse like subnet 2 192.168.1.64 first IP & .127 broadcast. similar to Subnets 3 & 4@@chrography
Answer to the quiz :
If we take /26 that means 2 bits into the last octet
Meaning we can have 4 networks
192.168.1.(00******)
192.168.1.(01******)
192.168.1.(10******)
192.168.1.(11******)
Converting to decimal 0/64/128/192
Thank you very much for this lessons
i am not exaggerating but you are the best teacher for networking on youtube. I dont think there is material better than this out there. Even on Udemy which is paid.
192.168.1.64/26
192.168.1.128/26
192.168.1.192/26
Thank you for your lectures! And congratulations on passing CCNA with a high score. I wish to do the same.
Perfect answers! Good luck on your CCNA ;)
I was so lost when I first started this ccna journey, but with every day and every video everything makes so much more sense. Thank you so much for your videos!
Hi Jeremy,
I just found and watched your Subnetting - Part 1 video.
I could never really get a grip on Subnetting but after watching Part 1, I finally understand how it works and can calculate subnets.
Thanks a ton and I going to watch Part 2 in just a few minutes.
Keep up the good work!
This is the best subnetting video I've come across, hands down. You show the BEST way to break it down not only to use it, but to understand it completely.
I'm omitting the "192.168.1" part for brevity's sake:
- Subnet 1: .0/26
- Subnet 2: .64/26
- Subnet 3: .128/26
- Subnet 4: .192/26
I'm guessing it works like this because once the host portion of the address is maxed out it "overflows" into the network prefix, resetting all the host bits to 0 and thereby producing the identifying address of the proceeding subnetwork. This isn't intuitively reflected in the dotted decimal representation of the address because we're grouping by octets/bytes instead of sextets.
Im finally starting the subnetting. It took me longer than what i thought but in the meanwhile i got a new job. Im a server assembler technician and this course is giving me a chance to get an amazing carreer
You are a legend, Jeremy. Thank you for everything you've done with the CCNA videos (and other certification classes).
Wow. When I heard about subnetting I thought that its something difficult, but by your video this is much easier to understand than even the routing video.
I love the series so far. I am on day 13 and am looking forward to completing this course. Commenting this on every video for the algorithm.
I'm lucky to have been one of the ones who picked up subnetting pretty easily when I was studying for CompTIA Network+, but I can definitely understand how it's a confusing topic for a lot of people. This video is an excellent resource for anyone struggling with it. Thanks for your videos, Jeremy!
This is amazing never had I ever understood the concept so clearly. Thank you so much for providing such an amazing course.
Great, I'm glad to hear that :)
your the GOAT i watched someone else's explanation of this and couldn't understand it at all. so I said to myself let me go to Jeremy's video of it.. Now its easy for me THANKS!!!!
This is surreal I'm not new to networking I've actually been self-studying for cybersec cert and now decided to take CCNA to solidify my understanding of networking and this is UNREAL. I have NEVER seen a better explanation on subnetting ever before. Thank you!
I got to this point last Friday the 27th of May and was struggling badly. I was overthinking and doing short cuts. Even went to other videos to get some other pointers. Within the last few days with hours of practicing, I made huge progress and it's simply just writing out the binary numbers. I pretty much used your slides with the tricks as much as the other videos. I also used a lot of paper but for now, it's getting them done. I imagine that if I keep practicing for a few more weeks, my progress will look even greater.
This is the quiz solution:
1) 192.168.1.0/26, with broadcast address of: 192.168.1.63/26,
2) 192.168.1.64/26, with broadcast address of: 192.168.1.127/26,
3) 192.168.1.128/26, with broadcast address of: 192.168.1.191/26,
4) 192.168.1.192/26, with broadcast address of: 192.168.1.255/26
And thank you very much for your great content!
im js in the process of studying for the ccna, day 1 - 13 has been great with amazing explanations I greatly appreciate this course and will make sure the pass the exam by the end of this summer
I deeply appreciate the way the videos are structured, this is clearer than any other class I've taken. THANK-YOU.
This is the best subnetting video I have ever watched & I have watched a lot. Neil explains it well too but you do it best.
Thanks Jeremy for all the effort you put into these videos. You are amazing!
Thank you Joyce!
Thank you i have seen 10-12 video but your explanation has given the idea about how to break a large network into a small subnet and how to assign the addresses to the host serially. Really satisfied, i did not thought that this lecture will give me that idea what i actually looking for. after watching i understand that you know how to put the information from one brain to another empty brain with clear explanation and you have that capability. Thank You Jeremy.❤❤❤
My teacher was an amazing person. He was very kind, well educated, and always stayed late to help students. But you Jeremy, are simply much, much better. This is simply an observation.
Jeremy you are just amazing! I´m not a native english speaker but your pronounciation is so great that even I understand every word clearly. I learned more with your videos yet than in 2 years school. Thanks for the free content. I really really appreciate it.
I have watched many tutorials on RUclips rangning from programming frameworks to maths and I have to say, you are the best tutor I've ever come across. Thanks a ton for this course!
No corny analogies. I have done basic class c networking for lans before with no need to subnet but am now studying and learning networking for non ccna certification. After 5 or 6 videos this is the perfect video to tie it all together. Going to subscribe and look at that book!
So this is why in one task we had these kinds of IPs. I've been enlightened.
Thank you for the amazing course.
Thanks Jeremy, much appreciated! Best teacher ever!
hey i jusy wanted to drop in and say thank you! Because of your sims i was able to really prepare for the icnd2 200-105 and passed the day before the cert apocalypse!
Awesome! Congratulations on making it in time!
Thank you so much for providing free CCNA courses. Power!!!
Literally, your tutoring is fascinating and understandable and i love following you through all of your videos.
Thank you :)
This is absolutely so easy for you but now I feel smart just for following what you were saying in the video, there are no words to describe how much I respect you, you are unique 🙏
Thank you! It wasn't easy when I first studied it ;)
Greatful to get these CCNA videos as I begin studying for CCNA
Your explanation is so clear and simple to understand.This online course is the best till now.Thank you!
Thank you so much!
i have seen so many video i have worked with prefixs for long time but never could understand and solve them as simply as you have explained Sir! u r master in teaching and explaining
if you thought of tourism to middle east consider Yemen, you have put all your knowledge for free and i well show you the hole country for free also ^_^ anytime you wish
thank you from all of my heart
greetings from Yemen
Been doing networking and damn subnetting gave me a hard time, but now I m actually more confidebt taking exams and setting up networks. Big thanks to you Mister!!!
Thanks! Best of luck on the exam ;)
I was delighted by the idea of subnetting. Thanks for explaning it so clearly!
Out of all of the videos I have watched Jeremy can teach a wall how to pass the CCNA. He makes it so easy and simple, this is the best Subnet video I have watched. Have to give credit to Jeremy for passing my CCNA. My only complaint is his book is not completed, if so please tell me and I will buy the other half of it, it is National Treasure. Thank you Jeremy for making, learning a complex skill so simple.
subnet2 : 192.168.1.64/26
subnet3: 192.168.1.128/26
subnet4: 192.168.1.192/26
thanks for hard working you are doing.
Great job Jeremy, keep up the good work.
This is brilliant, wish I had started a year ago. Thank you very much J, keep up the good work.
Thank you :)
Thank you Jeremy.... You are a great teacher... Keep it up sir
Thank you for the clear explanations Jeremy, so calculating these subnets was pretty easy
Very clear and direct explanation on why we need to use subnetting to avoid wasting IP addresses.
Thanks, glad to hear it :)
When it came to networking I loved everything else except for subnetting and that's because for some reason I struggled with it more compared to the rest of the content. Yourself and David Bombal made me understand them better than I ever have. I can confidently subnet networks now and understand WHY I am using that specific address block/CIDR Notation. Thank you.
Thank you, glad to hear that :)
Ummm, actually it's an 8p8c connector, sweaty 😘
@@garrylarry4865 Ayo what the heck? 🤨
damn...this is just amazing..i am sooooo greatful for you Jeremy, and for this beautiful technology called the Internet...Vincent Cerf and Bob Khan for inventing TCP/IP, Larry Robets and his team for inventing packet switching, and sooooooo many other (BBN folks/ MIT etc) to Michael Faraday who first started harnessing electricity in 1831, and invented the first electric motor with salt water a magnet petrie dish a copper wire suspended in air..getting into I.T made me go ALL way down the rabbithole of how we have come this far..and thank you..here we are in 2022 and im leisurely soaking up this knowledge for FREE...Jeremy I am soo beyond grateful bro, im unemployed depressed, suffered alot in life as a youth, but as soon as i am employed I promise to pay you what u deserve for this man...God bless bro!!! thank u so much for this..u explain it the bestttttttttttttttttttttttttttttttttttttt
Day 13 part 1 was awesome! Thank you Jeremy!
I Thought I am the only one that do enjoy this guy teaching... so humble to the point that he do explain everything from scratch like he is teaching a 3 years old child... English is so clear and ...... cant explain more... thanks boss
you are the men..Incredible this was driving me crazy now a lot clear..thank you.
Thanks for your comment, glad to help!
Many thanks Jeremy I appreciate your good work. I wish to take the CCNA.
Man, you are helping these concepts to be easy to learn for beginners like me! Thank you thank you!
Glad to hear that, thanks :)
Hi! Your course arrived in Brazil! Congrats on the excellent content and didactics. Looking forward to the CCNP course! Hug
verdde
Every time I try to watch someone else's lectures I say "no way is this better". Jeremy's lectures have set such a high bar that I often assess them to his content standards. Of course they have never met them.
Thanks Iman :)
Glad to finally be back on track with this training. Horrible 2 weeks were I couldn't dedicate time to study and learn and I feel I forgot everything
Take your time to catch up, no rush!
hey jeremy, its an easy way to learn subneting. thank you
Best videos on subnetting so far.
These videos are amazing. Thank you.
Best CCNA course out there. Thank you mister.
Thank you Jeremy for making this!! great stuff!!
Thanks Cristian :)
Thank you very much once again Jeremy. These videos are golden!!
Jeremy we love you thanks for helping us on or Ccna journey
Hi Jeremy! Thank you for the series of the videos. This is super duper helpful for us! Quick question, is there any flashcard for day 12? Thanks!
Great explanation, very much appreciated.
Crystal clear Jeremy, Thank you.
Excellent tutorial I've seen till date on this topic !!!
Thanks, Sakthi :)
I've struggled with subnetting for so long. It's been one of the subjects I dread going back to and I usually give up half way through because it's so difficult for me to understand. I know this video is just scratching the surface.. but. Thank you for helping me break that cycle.
I hope it helps!
Such amazing training with no Mistake and discipline, Missive thanks to you
Thank you :)
Mr. Jeremy i am overwhelmed after i heard some comments about the exam started yesterday, please provide us a video about what to really focus on before talking the exam, you are a great teacher and we passing the exam relays on god then you ..... god bless you
I haven't taken the new exam yet so I'm not sure what the most important topics are yet! Look up David Bombal on RUclips, he took the exam and has some advice about it.
What a pleasure to watch your courses.
Thanks, glad to hear that :)
Thanks @JeremysITLab, I was able to figure out the answer with your hint. I understand how you teach.
Your main gold for these videos, is succeed. I fully understand subnetting thank you
An easy way to calculate your host bits is (32-x)=host bits. with x = your cidr mask. for example; /25 is 32-25=7 then 2^7=128, 128-2 = 126 usable addresses. This avoids having to write out binary on paper and makes it so you can do it in your head if you memorize the powers of 2.
Day 13 part Thank you Jeremy! You are amazing
solved*
And thank you so much for doing this series, I will definitely donate to you when I pass.
you are amazing thank you for the clear explanation about subnetting
I have done two courses
First ITproTV: sucks big time
Second: Udemy by Neil: much better than the first one
Now this one: by far the best one, so thorough and easy to understand!
Wow you are great Jeremy
Thanks for your classes, they are the best!
Here are my answers for the quiz question:
192.168.1.64 /26
192.168.1.128 /26
192.168.1.192 /26
Since the host part is 6 bits (2 to the power 6 equals 64), I used increments of 64 to get the next network address of the remaining subnets; i.e
0 + 64 = 64
64 + 64 = 128
128 + 64 = 192
Thanks :)
Perfect!
Thank you for explaining your answer. I had a hard time figuring this out.
@@Reason_over_Dogma Yes that's true but you can also use the remaining 2 bits in the last octet which are the portion of the network Now and convert them from binary into decimal and would give you the same answer or 2n=4 Network or Subnets
00 000000 = 0 /26
0 I 000000 = 64 /26
I 0 000000 = 128 /26
I I 000000 = 192 /26
@@pucka_ak47 thanks for the tip. I ended up passing the CCNA last year. I figured it out thankfully. Wasnt easy for me
@@Reason_over_Dogma congrats... it's not easy for anyone i think...
you are a great teacher.. Thank you for sharing free course.
This takes most of the clouds in my brain when it comes to this topic..Thanks man
Thank you! great video.
Keep up the great work, man! Thank you!
Thanks Sam :)
Thanks Jeremy another great video lesson. Please keep it up! I was about to post the answer but then others comments spoil me, and figure it out my answer was wrong :D But no warries I am not afraid to expose my ignorance, I have to learn and get better.
I like your attitude! Keep up the good work ;)
Thank you!!!
Please create course about multicast(igmp, pim, the commands, labs etc)
Thank you Jeremy this videos help a lot, when you gonna post the rest??
Israel Deras I post videos when I finish making them.
the best thing about jeremy IT lab is , he showed that he is really here for help. by saying check other videos he showed he is real man
Thanks, Mujahid ;)
Thank you so much Mr Jeremy for your hard work.
Thank you for leaving a comment :)
I read several times on subnets but now clearly understand, thanks Jeremy
Thanks, glad to hear that :)
very clear explanation, many thanks.
Answer of Day-13 Quiz:
Subnet 1 - 192.168.1.0
Subnet 2 - 192.168.1.64
Subnet 3 - 192.168.1.128
Subnet 4 - 192.168.1.192
Thank you so much for this amazing video! I really enjoyed Subnetting, that was so hard for me before watching this video. Your hard work and dedication to creating quality content are greatly appreciated. Keep up the fantastic work!
I was lost in this subnetting thing but now i have fully understood the whole process!! Thanks a lot man!!
Thanks, glad to hear it!
Amazing explanation!
Thank you! :)