Finally a networking video that shows the actual hardware, visuals are very helpful.

@rakand323

3 жыл бұрын

Feel you

@santelices1

3 жыл бұрын

could not agree more with you!

@mattferrigno9750

2 жыл бұрын

You can't google a picture of a switch? It's literally a metal box with a bunch of RJ-45 connections.

@ff1077

Жыл бұрын

Can confirm. As a strong visual learner, this would be a great tool to use if I had the hardware.

@NicholasWiewiora

Жыл бұрын

@@mattferrigno9750 You can, but seeing someone talk about it while holding it, pointing to different parts of it, is much more helpful than looking at a picture on the internet.

Dude even if I get my CCNA I feel like I need a badass beard to be qaulified as a network engineer. Love this channel.

@nathanluck5938

3 жыл бұрын

That's the attitude right there. Lol

@gicucapra

3 жыл бұрын

lvl 99999 network engineer = > ccna ,mug from network chuck and real beard

@piros100

3 жыл бұрын

and how do girls qualify to be network engineers? :D

@musicalmercy5204

3 жыл бұрын

Then you can appear more knowledgeable than you actually are ;)

@vinayjoshi7882

3 жыл бұрын

@@piros100 they have amazing hair on their head :D

This guy is more engaging than most of my college professors. He actually makes the stuff interesting. I also lost my shit when I saw Johnny and Lisa 😂

@Knives9

2 жыл бұрын

To be fair, this is a video, not a class room where you're teaching it over and over and over.

I can't believe that this guy convinced me that some box that sits in a corner collecting dust in my school's computer lab is so amazing

@kirti6867

2 жыл бұрын

Is this course still free??

@CSSX80

2 жыл бұрын

Acquire it

Finally, I can get up off my lazy ass and focus on the CCNA, thanks NetworkChuck

i love how you explain stuff...i bet you can make me fall in love with the most boring stuff out there.

@relaxingtryvids5061

3 жыл бұрын

I even doesn't speak English and I can understand almost every thing you say WOW eres realmente bueno en lo que haces!!! Thanks Chuck.

@thuongthach6458

2 жыл бұрын

Mmmmxvvv

Currently doing a CS course, and I learned more in this 20 min video than a 2 hour lecture. Great work.

@natashanichole1027

8 ай бұрын

What school? Sounds just like me lol. Have to teach myself anyway

@calmhorizons

8 ай бұрын

It's a University in Ireland - our AOSN - Architecture, Operating Systems and Networks teacher was probably the most tedious man I've ever met. And I've sat in 4 hour long board meetings, so that is saying something!@@natashanichole1027

This guy doesn't just teach you, but he inspires you to become a network engineer. Thank you so much.

"PING!".... "REPLY!" 😅 that was actually helpful. Chuck makes learning so much fun. 👍 Nice one Chuck.

@panic_seller

3 жыл бұрын

Those Kids are gonna be hackers, Imagine learning about networks at that age

You’re awesome. I have ADHD and it’s hard as hell to follow along and focus most of the time but your videos are SO easy to follow along. Keep up the great work!

@alexcarlson481

2 жыл бұрын

Honestly same, his videos are helping me understand a lot of these topics better than my actual certification courses.

@TruckinMommy

Жыл бұрын

I think its because he is also high energy..I also have adhd. It sucks lol.

@chrislazz5632

Жыл бұрын

I'm not diagnosed, never reached out/attempted to do so, but I'm almost certain I have it aswell. Just been an overwhelming amount of signs over the years, and textbooks etc are clearly not ideal for me - this guy on the other hand taught me so much in just two short videos already. His format makes it so easy to focus. What a great teacher.

@tinpham3736

4 ай бұрын

I wholeheartedly agree, I can never stay longer than 5 minutes on other people's videos because I just distract myself all the time, but this man does the mini-distractions for me, and then brings me right back into the topic at hand so effortlessly

I just finished taking my first data and lans class for college and wow I am just amazed why I don’t find this channel earlier this is really engaging and really breaks it down for us normal people who are new to tech.

Chuck, you are the man! I love your passion and authenticity. Nice to see "young" people passionate about their craft these days. I'm a software developer with an interest in better understanding networking ... it's becoming more and more necessary as things move to the cloud.

Man I hope you read this. Last week some friends of my university enroll in a ccna course that I really wanted to. I love this topic, network and so. I'm a student from TEC Costa Rica. I can't pay a ccna course it was somehow frustrated and I realize that this course was available. Now I can say thank you for giving this opportunity (taking into consideration there is more to cover). You no have idea how happy this made me feel. I just want you to know that you are changing someone's life in a positive way. Never stop doing this things, and the day you made the choice of working more in your channel it was for a good reason. Keep going and thank you!!!

@trebelojaques458

2 жыл бұрын

This just gives me so many reasons of inspirations to do the same for this community of innovating curious peacocks just newly entering the field. I'd love to sometime start and educate people for free, support and give back to the field, what it gave to me... Internet is definitely a miraculous invention, and I can't thank the previous lords of networks and computers to bring about such an event

@nonapplicable3395

2 жыл бұрын

You really ought to be learning this from someone who actually earned the cert, and not this shmuck

Amazing work Chuck ! :) Just a small add on. The way the switch learns the MAC for the first time is by forwarding the packet on all ports, except the one it came on. Only the intended recipient replies. Now the switch records the source MAC of the reply packet in the MAC Address table. Next time it knows which port to forward it on, since it is already recorded in the table.

@Harisankarbs

3 жыл бұрын

Thanks bro..The video was so inclusive and then i fell into the loop "How does the switch know the mac of the dest if the CAM doesnt have it at first????" Even in my computer the simulation showed the switch send the packets to everyone out there for the first time. I got confused. Now you saved me. BTW i am a newbie

@devamalya

3 жыл бұрын

@@Harisankarbs :)

@leothalion3983

3 жыл бұрын

@@devamalya 😅

@GoogleAccount-rt7rl

3 жыл бұрын

@@Harisankarbs i was with you :D

@synacktra

3 жыл бұрын

It's uses ARP (Address Resolution Protocol) which sends the broadcast message

Thank you so much for existing. I’m taking my first Cisco course in college and it’s so much reading. I learned so much and better in 20 mins from your video than studying a whole day. I am now going to your videos after reading cause it helps bring everything together. Thank you!!!

Chuck is such a good teacher... so many tutorials put me to sleep but he is so entertaining and informed that i watch them for fun and knowledge. Truly a blessing!

That “Oh hi Mark” was so well used. Please tell me I’m not the only one who knows that reference. Regardless if he meant in the way I took it 😂😂😂

@Dylan-dv7wt

3 жыл бұрын

Oh Hi Mark! I did not hit her... i did not! lol

@thenson1Halo

3 жыл бұрын

*Throws bottle*

@markboweringphotography4408

3 жыл бұрын

That was a great film. My family say that to me all the time.

@thenson1Halo

3 жыл бұрын

@@markboweringphotography4408 if my name was Mark it would be my favorite part about being named Mark.

@Brodie1906

3 жыл бұрын

You are tearing me apart lisa!!!

Been in programming courses at my local college for a couple years now, this one video alone gave me more confidence in my knowledge and actually taught me some things, will definitely be continuing to learn more as a programmer. I know/think it’s very important to understand even base level connections like this

Thank you for your passion, attention to detail, and sensibility to simplify without compromising essentials. You are special. Please keep it up. You are helping change lives for the better. Rock’n roll brother.

So nice to actually learn something and feel engaged. Every other channel I come across is just someone reading off of a slideshow that, by the end of, I still haven't retained anything because nothing is explained. You are one in a million, Chuck. Thank you, dude.

Honestly I cannot express how grateful I am that this is free. This whole series is extremely informative, interactive, and genuinely fun to watch. You’re a wonderful instructor and you have definitely earned my support. Keep up the awesome work!

Your way of delivering content and keeping the viewer engaged is amazing! Love your videos!

i just saw your first video about networking and then came to this video, bravo on the changes and how far you seem to have come in many ways! i'll be following to get started on my ccna

I must say, first and foremost your content designing is just amazing. By far have not ever came across any such channel that had created such extensive content on each topic. i landed on your channel really very late but better late than never. so thanks to youtube for populating your channel . second, your way of explaining stuffs in a fun way is just another cherry on the cake. and then the practice questions. Amalgamation of all 3 above make your channel one of the best places to learn.

Chuck, a massive thanks for your amazing videos. You are a great teacher, your pace and the way to explain is some of the best I've seen around youtube!

I love your energy. I’m a young dude trying to find out what I want to do in IT , and your excitement and enthusiasm made me want to keep learning networking . Thank you for this video!

Best KZreadr ever. You exponentially made me far more interested in IT/Cyber security than I have been. (Been working on security +, and networking +) it’s been very intimidating to try to learn but your videos make it so easy to understand and gives me hope I can switch into this new, exciting career.

i had been working in electronic for 9 years and you are so amazing in explaining things and you made be so interested in networking even though i thought it is going to be so boring because i am hardware programmer,, man you are so amazing keep going !!

Way to step up to the plate Chuck! You’re content is educational; while offering inspiration, energy, and conviction! Thank you and keep it going.

I have been watching tutorials all my life, many different topics and many instructors all about computers, but i have never seen someone explaining things in that much engaging and interactive way 👍👍

Honestly I don't think I've really commented on any KZread video that I've learnt from until I watched this video, you're exceptional and I enjoy your passion when you teach networking. You swept me off my feet so I had to subscribe to your channel. 💯Good Job and thanks to Boson for sponsoring this video

Stumbled upon your course in a sea of them. Honestly very satisfied for the first two days, and as an18 year old your way of teaching is just not boring and actually makes me want to learn. Keep going!

Chuck. After retiring from I.T after 30+ years, you're still teaching me things. Keep up the good work (by the way I'm in the U.K.)

Man its about time NetworkChuck came up with a free course. I always felt like he needed to teach a free course on KZread!!! I LOVE it. He is even using the movie clips just like I do. Time to continue recording my CCNA course, Way to go Chuck!!!

@leothalion3983

3 жыл бұрын

Do you have a channel?

@kedabro1957

3 жыл бұрын

@@leothalion3983 Tapping on his photo brings you to his channel.

The way you teach this stuff is amazing , you simplify everything to make it digestible for all , thanks

Thank you, I have been a desktop tech for the past five years and this has been a great refresher course along with learning and using the Cisco Packet Tracer tool.

Thank you for this, seriously. I am currently doing a course at college which includes a CCNA certificate. I can't wait to use your videos alongside. You make it fun to learn this.

The visual effects and the teaching method is absolutely brilliant. This man gives so much motivation to learn and keep going. I am on maternity leave returning to office (service provider) in a year and wanted to refresh my knowledge. Never seen such an enthusiatic teacher with so well prepared material. Thanks so much, it actually gives big motivation to go for the exam 👏👏.

Keep the light shining and burning Chuck! Your teaching model is high-level which is what the world needs!

I love your level of enthusiasm. I am currently working towards my CompTIA exam and truly appreciate your work here :-)

Keep them coming sir! This is setting the standard for CCNA training VODs. Ill be using these for the CCNA class that I teach.

@videogamenut1289

3 жыл бұрын

Yeah same for me I just bought Todd Lammle's guide book for CCNA. This will compliment that book very well 😊

@daltonwillis3348

3 жыл бұрын

Someone should make a discord as well!

@johnkira2095

3 жыл бұрын

All thanks 🙏 to Hackergold02 on instagram for the great job done ✅ after someone got my password and started extorting my friend for money till I get referred to use Hackergold02 on instagram and thanks God they are able to recover my account back to me thanks 🙏 to you and always the best ❤️💯

@rifqioktario5546

3 жыл бұрын

@@johnkira2095 shut up you bot

So far so good! Thanks for putting so much effort into these videos!

Thank you so much. In 2 videos I have learned more than I have did with books. I just thought I was stupid even though I am an database programmer. But it now seems so clear. I too am a total nerd even as a 50 year old. It's like talking to a friend about something that you both love.

the way you explain, the way you smoothly bring up a joke everything bro you deserve great gratitude

Hi Chuck. Just found your channel today through recommended videos next to an LTT vid. I am sitting at home burnt out from my non-IT related work for 3 months now thinking about what to do with my life and thanks to your You Suck at Subnetting series and these I am now excited about something for the first time in a long time. Thanks for that! Will be following this course closely over the coming weeks!

@tipsyorbasman7653

Жыл бұрын

How did it go for your Pieter?

loved the ping n reply part...of course, the playlist is much appreciated one.

Thank you, thank you so much. I've been a hobbyist/mediocre-on-my-way-to-pro for SO long and it's been hard to keep my attention in one place long enough to piece it all together with any kind of efficiency. I've been catching various videos of yours for a few months now and I just gotta say... You, man... You are what speaks to me in a way my brain will absorb it effectively. Thank you so much. It's so frustrating having the brain power and the passion for all this but always coming up short on being able to focus. Please keep doing you. You rock(I know you know it). Let's do this!

Gosh, you just seem like such a nice, kind and enthusiastic man. It's a joy learning from you Chuck!

Dude you're such a good teacher, your enthusiasm, humor and the way you explain things is rare in this IT world. I love it, thanks. Would buy every single Udemy course you do.

Hello Chuck ! I wanted to let you know that your excitement, your passion, the way you explain stuff and your courses made me finish CCNA 1 & 2 and I even got a letter of merit for getting excellent points. Getting into comptia+, ITIL, Powershell and a course in Linux. You are a great inspiration and motivation to get me through the difficult parts of everything. Thank you very much !

@alexcarlson481

2 жыл бұрын

Congrats!

@Joetoep

2 жыл бұрын

@@alexcarlson481 Got a job as 1st line engineer now. Meanwhile I'm doing courses about powershell, VM Ware and looking forward to do CCNA 3. :)

@JohnnyKelly

2 жыл бұрын

Nice work man. You rock! 🤘🏻🔥👊🏻😎

@David-wj1mn

Жыл бұрын

Hey do you have instagram im interested and want to ask aome questions

@anthony452

Жыл бұрын

How long did it take you to obtain your CCNA and how much study time?

Gosh you are such an amazing teacher. 2years later this video is still outstanding, I am just understanding this explicitly for the first time. Super excited to learn the others. The best part is I barely stumbled on this video. Thank you a great deal

Awesome. Never saw any of this with such emotion. You put so much emotion on this, so much fun. I discovered your channel a couple of days ago and I can't stop watching your videos, such a good time. I will learn even if I don't try. Congratulations on this great work! You are unique.

I’m a final year graduation student and I swear interested in networking because of your videos bro.. I’ll informed my friends to subscribe your channel and follow yours videos as basic..Thank u broo.

@niveds9090

3 жыл бұрын

finally, i got a "malayali!"

@ChrisWill

3 жыл бұрын

I LOL'd at that

The "Oh, hi Mark!" Made me chuckle such a great movie 🤣🤣🤣

Chuck, you are AWESOME! I've been studying with the Materials from Pearson Test Prep, and while they are great, and detailed. Having someone like you explain things in a more entertaining format is such a terrific supplement. Your real examples, video of actual equipment you use, and excitement just brings the material to life. THANK YOU THANK YOU THANK YOU!!!

I was bored in networking and really was bad at it but you are the one who brought my interest and made me focus in networking and become addicted to it

I'm taking a CCNA course on youtube rn and watching these videos are like the perfect review and confirms my understanding of these topics! It feels so good to watch these videos and understand everything

@oussamahafez9117

Жыл бұрын

Do you think his videos are enough for me to pass my CCNA? Or do I need more detailed courses ?

@JohnDoe-ou7br

Жыл бұрын

@@oussamahafez9117 You should get more detailed courses. These videos are good for a quick overview and explaining things in a very beginner-friendly way before you start a more difficult course

This is an absolutely amazing video, as someone interested in getting into the field, this is the perfect series to start learning, not to mention the Cisco website mentioned. I did have an issue on the wireless part in the lab, where it wasn't sending the message , but with some tinkering I found out that the IPv4 Address was blank on the 3 wireless devices. It worked fine after that!

@jeffboomhaur778

Жыл бұрын

I was having the same problem, thanks for clearing that up.

@jeannoelhonisch7037

Жыл бұрын

How is it adjusted ?

Currently in a networks college course but have been looking for supplemental material on KZread. Found a few videos that helped a little but this one helps A LOT. Best explainers I have seen yet - good job.

My three years university program, Network and Systemadministration, have just started, and it's perfect that I found your channel. This sure will help me get a kick start

I gave up on studying for the day until you posted this. I really enjoyed this video. Going to love mixing this up with David Bombal's udemy course.

@malluk4127

3 жыл бұрын

Jeremy's IT Lab is awesome too.

@ChristopherEGr33n33

3 жыл бұрын

Hey Sean, I am in the exact same boat. Been working through Daves course but feel like I have some knowledge gaps or Dave assumes some knowledge. Do you have those same moments while working through the Udemy material? How do you go with most of his labs?

@muath1125

3 жыл бұрын

@C Green At the beginning i wasn't doing good in his labs, i realized that i'm not practicing enough, so i made my own topology and i tried troubleshooting it, when i don't understand something or i needed some help i go to the Network Engineering Stack Exchange: networkengineering.stackexchange.com/ website and i post my questions in there, very helpful people there, after troubleshooting my own topology, i noticed big difference and i started to complete every lab that i had to answer after.

Thanks a lot really I love simple terms. This is the best video I ever seen.

I just started learning about this at university and your videos have made it superrrr easy to get it even more!

If I didn't get to know your channel I would never get to know and love networking so much. Thank you for your time and work that you put in this contents, i think the world deserves more people like that are willing to help others.

I'm a CCNP myself, but it never hurts to brush up on the basics! Thank you for this, really looking forward to more of these!

@fritzdamiendengambog9169

3 жыл бұрын

Did your ccnp helps you to get a job?

@fritzdamiendengambog9169

3 жыл бұрын

If yes how can you make with ccnp

@japhetkiplagat8452

3 жыл бұрын

i love this stuff

@japhetkiplagat8452

3 жыл бұрын

teach ccnp

@Frissdas1207

3 жыл бұрын

Can you please tell me how he got the IP addresses of the tablets to show in packet tracer? I can't find it.

Such a video I never seen , what a sinario! Amazing 👌

No lie I’m in switching and routing in school you are exposing this way better than my professor! Thank goodness I found this! Great work

Your videos are amazing. Everything about rhem is handled the right way and they're funny and engaging. I just landed my first IT job, having never learned anythimg that happens pre modem and I'm lost. This course is much needed.

You can teach even a child 😂 Bro you are amazing ❤️

@jamesdickson3631

3 жыл бұрын

No doubt. He is the best

@hackingsecurity6180

3 жыл бұрын

He is doing that loll

Wow, I actually learned something. I thought they're the same thing as hubs and routers.

Mate, your teaching ability is over 9000. Thank you for the course and thank you for sharing your knowledge!

Following along and taking notes, on the information dropped in the video, and man i gotta say you're energy is up there through out the video. Thank you!!

Appreciated the "Oh, hi Mark" haha

"I did not ping you Lisa! I did nooot!"

@willysatrionugroho8086

3 жыл бұрын

Lisa? Local Integrated System Architecture. Well, she's old.

I'm just starting my CompTIA A+ journey and Switches, Hubs and Routers etc have confused me no end. Your videos have made so much sense to me so thank you 😊

I love your passion. This was what I was trying to find "the best instructor" who can help to get my CCNA. I am sure this video will help me not only to pass the test but, also to have solid foundation. Thank you

Hey man, new to the channel. I work in IT and love your vids. Also, heard your a man of the faith too. Keep it up bro!

@NetworkChuck

3 жыл бұрын

Thanks Jimmy! And yes sir, Christ-follower.

@jimmyharrison5411

3 жыл бұрын

@@NetworkChuck Amen, my Boss gave me the access to review all your videos because he knows I'm a geek and love tech and what I do. Oh yes and a gamer

@jimmyharrison5411

3 жыл бұрын

@@NetworkChuck Followed on Instagram and by the way, you ever want to play COD, my Activision ID is Aceblackk#4164793. I have it on PS4 and Xbox lol

@marly3989

3 жыл бұрын

I am CCNP and I work as a network and security engineer but for some reason Chuck makes me want to start learning ccna again😂😂...Newbies take note, this man's teaching is on a next level.

@sandeepsandy3786

3 жыл бұрын

@@marly3989 what is the difference between CCNA and CCNP ?

Ahh Finally, wondering why you took almost 10days to upload it 🤔 Thank you NetworkChuck ❤

I read the title as "What is a Sandwich" and now I feel obligated to keep watching. + after being in the field for 12 years, this is probably one of the best / most entertaining ways I have seen this info presented.

I’m starting a cyber security job very soon and these videos have been incredibly helpful this man knows how to break down info and keep it as bites size and understandable as possible. Thankyou for helping all of us you sir are a real one much love ❤️🧠

Hey Chuck, love the channel you created and thanks for making content like this for new people like me. I have one question/constructive criticism about the video. I was not able to follow along in the lab after the 16:05 min time stamp. At this point in the video is when you added IP addresses for the tablet pc on the wireless network somehow, but did not include any info as to how to do that. it was "click, click, done" and on with the lesson. For noobs like me even the basic stuff has to be spelled out. I have been to several forums and several you tube videos but can not find anyone to explain that basic step and as a result the rest of the lab was useless because without IP addresses no communication. Thanks for what you do.

@ramusvinicini

2 жыл бұрын

I'm sure I'm late to help you but for anyone else with this problem... Click on the tablet and under Config > Global > Settings - there is an option to enter an IP address under default Gateway within the Gateway/DNS IPv4 box.

Hey Chuck, love this and will be using it in my high school cyber security class (that requires a background in networking to take the CompTIA Sec+ exam). Do you have a Patreon? I'd love to support you.

@appmania2180

3 жыл бұрын

@@Taywi Just wondering what job are you working at currently and what would you say the pros and cons of it are? I'm actually a uni student looking to switch into a different field.

@Taywi

3 жыл бұрын

@@appmania2180 I’m a Network Engineer... pros are definitely money ... cons are there’s always someone or something that will make you feel stupid

@distantsoil599

3 жыл бұрын

@@Taywi I am not a network engineer, I feel stupid every day. I’ve been doing this “IT Thing” for nearly fifteen years and have always worked for companies that have a separate networking team, leading me to be an expert on other things, I now don’t have that luxury and now need to learn networking and get a CCNA in a short space of time. I know what a VLAN is. I don’t know much else. God help me

@prostatus2447

3 жыл бұрын

You Can Support Him Here - ko-fi.com/networkchuck

@yuhikochan1952

3 жыл бұрын

lol please look at this positively! But I dont think you enjoy the field or subject. I really hope you find that

I am just starting to learn about IT/Networking, and wanting to do a career change from administrative work to something related to IT. I plan on getting my CCNA as a starting point. I kind of already knew the basics of a Network Infrastructure BUT this video really helped dive deeper into one aspect of the Network (Switches). I am so excited to watch the rest of them. The visuals and analogies used to explain each part is very helpful to me, as I am not an atypical leaner. Thanks so much and looking forward to more content.

You are a awesome trainer, teacher, performer, presenter, narrator. Impressed to the earth😇😇Thank you

Question: Switches only knows about mac addresses as it only deals with layer 2. But when you sent a ping command from your computer to another ip address, how does the switch know what mac address that ip address is mapped to? U didnt send "ping mac address" but ping ip address. Much appreciated if someone can clarify this for me thanks

@aah2300

3 жыл бұрын

Also had this question, from my understanding, when Laptop A pings Laptop B for the first time it sends out an ARP request to the switch to send that request out to everyone asking for the MAC address associated with that ip address. In this case laptop B says that's mine and sends back that MAC address to Laptop A where it's stored in the ARP cache of that computer. Now laptop A layer 2 frame sent to the switch has both MAC addresses

@KaboBryanDim

3 жыл бұрын

L3 switch

@esantosh91

3 жыл бұрын

Same query: My view: I think for first blank Mac frame switch broadcast that frame to all interface. Then on reply it create CAM table.

@Mr.Shannon.116

3 жыл бұрын

The computer creates a Layer 3 IP packet with its own IP address as the SOURCE IP and the destination IP address as the DESTINATION IP. This IP packet is only read by routers and other devices (such as computers and servers). Switches cannot read the IP packet. Your question is how then does the switch know where to send the packet? The computer has an ARP cache where it maps the IP address to the MAC address of other devices on the same network. The computer encapsulates (aka encloses) the Layer 3 IP packet with a Layer 2 frame. The Layer 2 frame contains the SOURCE MAC and the DESTINATION MAC addresses (from the computer's ARP cache). The switch reads the Layer 2 frame (containing the MAC addresses) but the switch never reads the Layer 3 packet (containing the IP addresses). The receiving computer will remove the Layer 2 frame and read the Layer 3 IP packet.

@rohanofelvenpower5566

3 жыл бұрын

hey I see a couple questions asking this. although chuck showed the packet tracer information of a packet/frame visually you still might not get it until you study OSI model and the smaller parts in a frame. So let me try to explain this quickly we mentioned the OSI model with Levels or Layer - these are mostly theoretical Because only Layer 1 actually moves data about as electricity!, so Layer 1 lives in the real world with you and me ;) and the other 6 layers up are all in the head of the computer!. [Off-topic: Layer 1 is discussed in thereal world for speed of data transfer and that's shown in BITS, so Kb or Mb with a small B. So when you torrent illegal stuff or you upload to your google drive you some 'speed' it's actually in BITS. Anything above that or mental stuff is in BYTES. Standard 8 bytes. Like a Sandwich 8 ingredients in EVERY byte ! :D ham, lettuce, pepperoni, cheese, another type of cheese, tomatoes, bread and sauce (mayonnaise please) That a capital B, so KB, MB, GB. This is always and all the data at rest. Stored magically on your hard drive (HDD) or the newer solid state drives with chips instead of magnetic disks (SDD). Sometimes google, apple, facebook, etc they show your amount of space on their drive as bits with a small b with is WRONG! ON THEIR PART! But most people have no idea. Trust me, this is the school of it, small bits for data transfer as electricity inside wires going under the sea or signals going up to space to a satellite. Once it is in. The receiving device, whatever it is, will *ALWAYS* read it as BYTES (groups of 8 bits). Because it was de-encapsulated or written into electricity FROM Bytes, moves as electricity (as 1 or 0) in bits, then gets read or encapsulated as BYTES again. The same information from the other end!] Ok a bit long sorry:D Because wires can only read or receive ONE bit a time. We need rules GOLDEN RULE NUMBER ONE!: Maximum transmission size of 1500 bytes. [not bits! computers don't speak bits, only wires do] So about 1.5 KB. Like a really small notepad document with GTA codes or a christmass shopping list. ALWAYS even if you transfer 200 TERABYTES as company data or 2MEGABYTES as a picture, gets broken into 1.5Kb. Now you need headers: Source IP address, destination IP address, Mac source and destination, ports, and much more! These go INSIDE THE MTU of 1.5KB. So you can actually send 1.4KB something of data NOT 1.5 KB. >> Mostly the headers size are produced automatically. But sometimes you adjust manually on the router such as with GRE for example. (it's a CCNP topic...a routing protocol for sending stuff over the internet). So this stuff of 1.5KB has many names but it's the same thing. It's a DATA UNIT or Protocol Data Unit - PDU. L2 - Frames L3 - Packets L4 - Segment if using TCP or Datagram if using UDP (only tcp and udp are used at Layer 4 basically...) L5, 6, 7 - just data really....it's called data :D so it has MANY NAMES but it's ONE DUDE!^ remember the faceless people from Game of Thrones? :D So these packets contain BOTH mac addresses AND ip addresses. Switches simply are programmed to not read layer 3. They receive the information of layers 3, 4 and the data but do not read it. They don't know how. Similarly routers don't read the layer 2 frame information! So you have a cisco network. And you bring a new host to a switch. It has a MAC address from the factory! but not IP...the IP address can change over time!! ever hid you PCs IP address? VPN...Proxy...Tor... [you can change the MAC address too using special software, of course, but the BIOS of your devices motherboard has the MAC address in it no matter what - unless you mess up the BIOS settings :/ ] - this is what they do with wi-fi in coffee shops. Get your laptop and buy a cheap wifi USB antenna from amazon. Because wifi acts like a HUB as chuck said in the video, you pay attention to the packets, wait for something from the router, see it's mac address. Wait for a login packet from a customers phone or laptop. See his MAC address. And now "spoof" your mac and IP address with software, probably using Kali Linux, you pretend to be one of them and get in. So a hub is like computer authentication in a building with NO CCTV. Just plug something in the key hole. A switch is a human bodyguard with a uniform.

Awesome video! To those who're wondering "how the destination MAC address is known with just their IP address?", you need to look at *ARP (Address Resolution Protocol)* which is responsible for that function. Happy learning! :)

I have had the pleasure of starting networking back in the days when Novel reigned supreme and Banyan was trying poorly to compete. I also had the fun of being part of the Novell MPR project working for the company that developed the platform. FOr all the changes and the increases in performance, it is amazing to see how this simple little packet has stayed the same while it transformed the world. Great course by the way. I could have used this back in the 80 's lol.

i wish i had a teacher like him in my student days, brother you have a very unique and awesome teaching skill. not everyone has this . btw loved watching all your videos.

1). D 2). D 3). Oh boo! I thought he said ten questions.

Hey Chuck the link for the lab isn't working

Found your channel by fluke when looking for some fibre related stuff - do like your playful energetic and knowledgeable delivery. You have tons of charisma - good on ya! Keep teaching and having fun

Incredibly helpful to see the process play out. Reading about this stuff is abstract, but seeing it made things finally click for me.

First 5 minutes of this video: "Isn't that amazing?!"

Poor Mr. Hub, got insulted throughout the entirety of the video

This is the best series ever man! So excited. And you're so good at explaining everything. Thank you.

Thank you for this. I've been working in IT for several years, but I am finally committed to getting certified to move up the ladder.

Noob question, how did you add the IP Addresses on those 3 Tablets? Thank you!

@justinblair9661

2 жыл бұрын

If you know the network address (192.168.10.0, or 200.200.10.0, for a couple of examples) and how many hosts you can have in your network (subnetting), you can configure it manually (static) with any of the IP addresses in your network. Or, just use DHCP and the device set up to provide an IP address (a router or a DHCP server, for example) automagically (dynamic)..

@ozyscotty

2 жыл бұрын

Yeah that stumped me too!

@bajbaj4977

2 жыл бұрын

@@ozyscotty hey man anyone help you out with the answer im stumped aswell

@ozyscotty

2 жыл бұрын

@@bajbaj4977 no mate no such luck

@bajbaj4977

2 жыл бұрын

@@ozyscotty watched the rest of the video and realised we don't need it right now ahah

17:16 How the "frame" PDU is containing the Mac address of the destination device? when we ping, we pinged on the IP address, not on the MAC address, we didn't give the ping command the MAC, we just gave it the IP, so how the "frame" now contains the MAC address of the destination device? In other words: How the IP address of the destination device is matching the MAC address of the destination device? In other words: Switches are layer 2 devices, they don't know what is an IP address, they just know MAC addresses. In other words: there should be an ARP "frame" that is being sent to the switch first to match the IP address "we passed to the ping command" with the destination MAC address. right?

@charafeddinetoumi7332

3 жыл бұрын

it's like a box ... ip is inside the box ... but mac src and dest is always on the box ... so it's sent hyperthericly

@rohanofelvenpower5566

3 жыл бұрын

hey I see a couple questions asking this. although chuck showed the packet tracer information of a packet/frame visually you still might not get it until you study OSI model and the smaller parts in a frame. So let me try to explain this quickly we mentioned the OSI model with Levels or Layer - these are mostly theoretical Because only Layer 1 actually moves data about as electricity!, so Layer 1 lives in the real world with you and me ;) and the other 6 layers up are all in the head of the computer!. [Off-topic: Layer 1 is discussed in thereal world for speed of data transfer and that's shown in BITS, so Kb or Mb with a small B. So when you torrent illegal stuff or you upload to your google drive you some 'speed' it's actually in BITS. Anything above that or mental stuff is in BYTES. Standard 8 bytes. Like a Sandwich 8 ingredients in EVERY byte ! :D ham, lettuce, pepperoni, cheese, another type of cheese, tomatoes, bread and sauce (mayonnaise please) That a capital B, so KB, MB, GB. This is always and all the data at rest. Stored magically on your hard drive (HDD) or the newer solid state drives with chips instead of magnetic disks (SDD). Sometimes google, apple, facebook, etc they show your amount of space on their drive as bits with a small b with is WRONG! ON THEIR PART! But most people have no idea. Trust me, this is the school of it, small bits for data transfer as electricity inside wires going under the sea or signals going up to space to a satellite. Once it is in. The receiving device, whatever it is, will *ALWAYS* read it as BYTES (groups of 8 bits). Because it was de-encapsulated or written into electricity FROM Bytes, moves as electricity (as 1 or 0) in bits, then gets read or encapsulated as BYTES again. The same information from the other end!] Ok a bit long sorry:D Because wires can only read or receive ONE bit a time. We need rules GOLDEN RULE NUMBER ONE!: Maximum transmission size of 1500 bytes. [not bits! computers don't speak bits, only wires do] So about 1.5 KB. Like a really small notepad document with GTA codes or a christmass shopping list. ALWAYS even if you transfer 200 TERABYTES as company data or 2MEGABYTES as a picture, gets broken into 1.5Kb. Now you need headers: Source IP address, destination IP address, Mac source and destination, ports, and much more! These go INSIDE THE MTU of 1.5KB. So you can actually send 1.4KB something of data NOT 1.5 KB. >> Mostly the headers size are produced automatically. But sometimes you adjust manually on the router such as with GRE for example. (it's a CCNP topic...a routing protocol for sending stuff over the internet). So this stuff of 1.5KB has many names but it's the same thing. It's a DATA UNIT or Protocol Data Unit - PDU. L2 - Frames L3 - Packets L4 - Segment if using TCP or Datagram if using UDP (only tcp and udp are used at Layer 4 basically...) L5, 6, 7 - just data really....it's called data :D so it has MANY NAMES but it's ONE DUDE!^ remember the faceless people from Game of Thrones? :D So these packets contain BOTH mac addresses AND ip addresses. Switches simply are programmed to not read layer 3. They receive the information of layers 3, 4 and the data but do not read it. They don't know how. Similarly routers don't read the layer 2 frame information! So you have a cisco network. And you bring a new host to a switch. It has a MAC address from the factory! but not IP...the IP address can change over time!! ever hid you PCs IP address? VPN...Proxy...Tor... [you can change the MAC address too using special software, of course, but the BIOS of your devices motherboard has the MAC address in it no matter what - unless you mess up the BIOS settings :/ ] - this is what they do with wi-fi in coffee shops. Get your laptop and buy a cheap wifi USB antenna from amazon. Because wifi acts like a HUB as chuck said in the video, you pay attention to the packets, wait for something from the router, see it's mac address. Wait for a login packet from a customers phone or laptop. See his MAC address. And now "spoof" your mac and IP address with software, probably using Kali Linux, you pretend to be one of them and get in. So a hub is like computer authentication in a building with NO CCTV. Just plug something in the key hole. A switch is a human bodyguard with a uniform.

@peter9853

3 жыл бұрын

@@rohanofelvenpower5566 exception on golden rule number 1: jumbo frames :p

Best networking tutor online or offline! Pretty much the sole reason I started my IT journey. Thank you Chuck!

Just completed Comptia Network+ course with professor messer to understand basics. Looking to pass my CCNA in June. Love that you include all these free resources. You the man Network Chuck!!