What is a ROUTER? // FREE CCNA // EP 2

What is a NETWORK ROUTER? FREE CCNA Course 200-301 - sponsored by the Boson Summer Sale 25% off: bit.ly/bosonexsimccna (affiliate)
Watch the whole course: bit.ly/nc-ccna
Go deeper: ntck.co/ncccna
🔥🔥Join the NetworkChuck Academy!: ntck.co/NCAcademy
☕☕OFFICIAL NetworkChuck Coffee: NetworkChuck.coffee ☕☕
Watch the whole course: bit.ly/nc-ccna
Install Packet Tracer: bit.ly/packtracer
CCNA Episode 2 Packet Tracer Lab: bit.ly/ccnaep2pt
0:00 ⏩ Intro
1:11 ⏩ remember switches?
1:57 ⏩ what is a ROUTER?
2:54 ⏩ do we actually NEED routers??
4:16 ⏩ what is ARP?
7:17 ⏩ Life without a ROUTER!!!
9:44 ⏩ routers SAVE THE DAY
14:20 ⏩ SNEAK PEAK.....DNS
18:44 ⏩ Your 1st Router command
🔥🔥BOSON SUMMER SALE 25% OFF EVERYTHING🔥🔥
-CCNA Lab: bit.ly/bosonccna2020 (Boson NetSim) (affiliate)
-CCNA Practice Exam: bit.ly/bosonexsimccna (Boson ExSim) (affiliate)
-CCNP Lab: bit.ly/encornetsim (Boson NetSim) (affiliate)
-CCNP Practice Exam: bit.ly/encorexsim (Boson ExSim) (affiliate)
➡️Support NetworkChuck: bit.ly/join_networkchuck
☕or buy me a coffee: ko-fi.com/networkchuck ☕
other FANTASTIC CCNA training resources:
FULL CCNA course: bit.ly/2BJazQG ( @David Bombal )
ITProTV: bit.ly/itprotvnetchuck
🔥Learn Python🔥
Codecademy: bit.ly/2Me22NH
(GEAR I USE...STUFF I RECOMMEND)
My network gear: geni.us/L6wyIUj
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Buy a Raspberry Pi: geni.us/aBeqAL
#ccna #ccna200301 #freeccna

[@jordansison2851]

I must say " This is the real content".

[@brentreed4860]

Couldn’t agree more. This is awesome.

[@aleksey826]

So, go and take an exam.

[@shivashiva8021]

Yes 👍

[@TshilidziMufamadi]

tell me you aced your ccna!!

[@sekytwo]

Learned more in these 2 videos than I did in my entire networking course at college. Bro you are killing it with these.

[@3333218]

Same here. 4 semesters of very confusing and cumbersome networking classes and this guy comes out of nowhere teaching stuff better than any college professor as if it was easy.

[@jmelchor29]

Dude me2 I was convinced I was too dumb to learn but this dude explains things so well.

[@justpassingby9825]

@@jmelchor29the problem is that amazing teachers can make complex information super simple, while a bad teacher is an expert complicating things that are actually simple

[@jmelchor29]

@@justpassingby9825 no doubt brother

[@prodbyjustjamiecee3413]

College is still valuable, honestly if you have all these certs + a degree you’re getting picked for the interview over someone who just has certs. But yes this is very good for a free option and network chuck makes it exciting and interesting

[@ThatcherSwartz]

Buddies got no right making Networking this fun and interesting.

[@samerkia]

I seriously wish my Netowrking teachers at UNI taught more like this rather than from a pre made presentation, I am so much more of a visual/hands on learner so when they just talked from a slide that didnt show much then threw us into a lab and expected us to know exactly what to do made it hard.

[@pspwilliams]

Exactly!!!!

[@franc587]

Dude you and I both. My UNI professor, who i really like, never did stuff like this w us. And in the end I had to go and learn it myself watching videos like this.

[@BallsworthBallsbury]

Traditional school is obsolete. This video is a perfect example why! I can't describe how grateful I am for this content, while also being simultaneously angry about all the wasted time from traditional shitty classroom "learning"

[@marcuspvxea]

Teaching like that goes hand in hand. Presentation about a topic covering sumurised infromation > Reading more in depth about what the teacher presented > Practical exercise > Test on the chapter. It's by far the easiest way to learn something. I had no problems learning when i found this out for myself, Teacher had a presentation for 10-15 minutes about a chapter, then i read through the chapter in the book after that i did a practical exercise or try to think of a few situations where it could be applied and then i was done for the rest of the chapter. A example by what i mean with trying to think of a situation where i could apply what i learned in the chapter using the video as a example would be building up a different network with 3 switches and a few computers in each network and then on papper, note how they can communicate with each other. And thats all i would need to do to score perfectly on the test afterwards. I usually did this in one lesson and then could spend the rest of the week doing whatever i wanted , then the day before the test i would have a summary of the chapter and just quickly go over it. I went from barley passing to straight A's and sometimes A+ (which is the highest grade u can have here)

[@usmanhussain9845]

amen 🙏

[@smdani]

I'm really amazed with the quality of your content. I'm computer engineer and I really appreciate what you're doing. Congrats and best wishes for this channel.

[@Watu-]

so cool see you around here! Dos creadores de contenidos de alto calibre. Un saludo Dani

[@yalidfuentes7911]

Genial! Yo sigo a ambos también

[@andyleivacamacho890]

Wow, que asombroso Wow it's amazing 😮😮

[@netrid3r]

In nomine Patris et Filii et Spiritus Hacking

[@johnathang8568]

As a computer engineer what advance would you provide most about getting into the tech world?

[@thesinofthetin]

Who would dislike this?! It's free fun education.

[@AlphaZeroOmega]

You're not doing it right unless you have at least a few haters.

[@elmo777]

Juniper people O.O /s

[@jong2359]

People trying to sell an education, probably.

[@AlphaZeroOmega]

@@jong2359 Haha! If that's the case, they would be better off putting time into improving themselves than getting all salty.

[@jong2359]

@@AlphaZeroOmega They are too used to doing nothing and collecting all the money... they only know how to improve profit margins ;-)

[@abdelrahmansamy5792]

you're a perfect instructor, I haven't seen anybody teaches with this brilliant techniques and this quality, thank you for your effort, you make learning much easier

[@franklinmccullough85]

I know I'm late to the party, but your series has (even at two episodes) been incredible. The information sticks and makes sense. I look forward to the rest of them.

[@jamesellis33]

I don't know I am starting to think he is full of shit... He may know the information, but this is a bunch of bullshit that no person would know starting off. After being in Networks now for awhile, this is stupid if this is for beginners. Garbage.

[@christopherbanner5761]

late as well

[@Vaseholly]

You’re not late. I’m just now studying for my CCNA and I’m on day 2 ❤ so technically, you’re already 4 months ahead of me, if you’re still studying by the time you read this!

[@corellonable]

im even later and i agree

[@Lawrence-vi4xy]

@@corellonable did the link for the practice lab work for you?

[@ferencgaborsimon245]

This is The Most Complicated Coffee Advertise that I EVER Watched!! :D :D :D

[@iliaabbasi64]

lOl

[@mostlypeacefulmisterputin]

Came for the coffee, left addicted to Xanax 😳

[@LaPietraMiliare.]

...and he didn't even sweeten it!!!

[@JeremysITLab]

Man these videos are so fun to watch! Keep it up!

[@NetworkChuck]

Thanks Jeremy! Congrats on the CCNA pass btw

[@abdulsarker9836]

NetworkChuck + Jeremy = > Who said CCNA is hard?

[@elanges93]

You both are awesome.

[@adiflorense1477]

Agree

[@adiflorense1477]

@@abdulsarker9836 where is david bombal anyway

[@Ironbull200]

I'm pretty much just teaching myself this stuff for fun because I am interested in tech and all and I really learn alot from these videos. But what I love most about them is not the easy to follow explanations or the style of the presentation, but rather the enthusiasm Chuck shows in his videos. Seeing him be so excited about the material makes listening and learning from him so much more enjoyable.

[@vanstone9582]

Woah! I hope everyone interested and taking this career field seriously discovers this channel! This is great! No teases, real substantial content

[@leykunejigu7477]

this is like a movie, its hard to wait a week for an episode.

[@fakirpoo]

Dude, I appreciate your ongoing efforts in making content like this, not only available to people but accessible as well. I am a senior network/security administrator with a 12 year old daughter who just started her CCNA journey. She loves your approach and method of teaching; basically it's a huge IT world that is an essential part of our lives. Learning about it is no longer just the domain of nerds, it is something that we should understand, same as we know how to check the oil or coolant in our cars, change the filters in our vacuums, or know how to balance our (virtual) checkbooks. I'm a fan of your teaching style as well. Between you, Jeremy Cioaro, Keith Barker, Knox Hutchinson, (just to name a few) and (humbly) myself, the next generation of IT engineers is taking strong root in my house. Thanking you immensely for your work.

[@ahwork]

🔥🔥 Dude you are the best IT guru out there, I've done my CCNA in 2011, but no one has explained topics like you do, You dont just explain "How" but you also explain "Why", adding it with analogies, that's what a great teacher does. Explaining the WHY with ANALOGY. You will be remembered for generations🔥

[@humayismayilzada7672]

haven't seen anyone with high enthusiasm to teach like you. Thanks, Chuck

[@jperez3684]

Man looking at other courses normally dealing with the OSI layer I would get so confused. I love how you were able to show us both physically and through Cisco Packet Tracer. This made it 10 times easier for me to grasp this concept. Thank you, Chuck!

[@jamesellis33]

Good luck with that, you are not going to see that bullshit in the real world. I know from experience. Packet tracer is okay, but it is still a load of shit. When you are actually working with switches and end devices you are not going to see menus like that at all. You will be SSH using something PUTTY, to log into the switch. This is clown shit...

[@victormenchaca2420]

I'm taking the CCNA certification in a couple of weeks so any content related to that is really appreciated! Thanks man keep the good work!

[@L4rgo117]

Good luck with your cert test

[@ElricIT]

Good luck, dude! Check placefortech.com

[@CoachRobboxing]

How'd you do??

[@Lifeofii]

Did you pass it bro 👀

[@michaelwarren9944]

Chuck, thanks for all you do for us. I am a Electrical Superintendent and was transferred to a new project as the security manager. With that I have to do networking with cameras and changing their IP addresses, going from Fiber to Cat 6 because of the distance. I had no idea what I was doing. Know I know about using a switch and router. POE was like, what are you talking about, the elephant in the room. Thank you for these video's, they are such a big help. Know I know how to change the IP address on the cameras. Again, you ROCK! I am almost 60 years old and I know you have thought this old dog new tricks. LOL.

[@hasiblolic2046]

This guy is incredibly motivating. I wish all teachers were this passionate about what it is they are teaching. Just look at the way he explains the simplest things, he does it in such a joyful way! You can really tell how much he loves this stuff.

[@mywguyoutube2721]

Chuck, you’re a God send! Keep doing your thing. Two years ago I was sitting on my couch with a beer discouraged about my current career. And for some reason, I landed one one of your videos, and your passion inspired on a journey to change my career! It’s been a lot of grinding but I can always count of your, what I call a “Packet Sermons” to get me pumped to study!

[@alro7779]

Thank you, Dave, for all the effort you've put into this series!!! This is an absolute 'no wasting time' video!!!

[@KerryannDeebes]

We didn't get any questions at the end of this episode. Can we continue with questions? It helps pick the brain and actually allows you to think about what you've just covered. That's just my feedback. Overall amazing content. Keep up the good work!

[@kstutz81]

I freaking love you man. Thank you for these. I just got placed in a networking/collaboration position and have so much mountain to climb. You’re teaching methods are on point. I can’t thank you enough bro. Keep em coming. No cream. No sugar.

[@MrJohnph21]

I've been a Network Engineer for 4 years now and so far this course has been one of the easiest to follow and understand thoroughly. I watch a ton of training materials and would really like you to consider a CCNP-ENCOR series! Keep up the great work!!

[@Raguna]

You're the best instructor I've even seen !!! The way you explained, the energy, the animation ... make the content very easy to understand and fun to watch. Thanks you so much !!!

[@hoofheartedicemelted296]

I've watched this three times already. I can't believe he is teaching this stuff for free.

[@3333218]

You have a real talent of only telling people what is absolutely necessary and only revealing new information when they're ready to learn it; in a way that is easy to follow and understand!

[@nerdydad8544]

Hey Chuck, Great content! I am going through a course to get my CCNA and I am supplementing it with your videos because they are so dynamic and well put. You are gifted to teach and its excited to see it. keep it up! Prayers for you and your family.

[@blueblood2555]

I already have my CCNA, I’m still watching! Good to see how different people teach the same topics. When I was studying it helped to have multiple ways of studying, I understood some things better reading, labs, and, other things by video. Even different ways people explain, different topics “clicked” better with different people explaining topics.

[@FaisalKhan-jl5hq]

If i study just from him is it gonna be enough for the exam?

[@blueblood2555]

@@FaisalKhan-jl5hq probably not, but everyone is different. I had to use the study guide and watched videos. If I didn’t understand a concept by reading, I had to dig deeper and find other reading material and more videos.

[@nishantdalvi9470]

@@FaisalKhan-jl5hq Have you done studing networking bro by now. ?

[@FaisalKhan-jl5hq]

@@nishantdalvi9470 nah bro I'm currently enrolled in a tuition course, there's a guy he's a network engineer, so i pay him and he's teaching me

[@medanshm6837]

u done?@@FaisalKhan-jl5hq

[@jasonlewis4972]

The clarity, the context and the level of engagement that you teach this is unmatched!! I couldn't even make it half way through other courses because I would be falling asleep! I would give this 100 likes if I could!

[@samr6609]

I cannot stress how useful I find this, Chuck. I've learned more from an hour of watching your videos than I did in a whole day of studying the CCNA guidebook. Thank you so much. I've always loved computers, but my anxiety has prevented me from entering the field of networking, simply from the sheer dearth of knowledge available. But watching you break it down.. it all makes sense.

[@josephlangford2912]

This course is great. I love how you break it all up. It's helping me refresh for a big job interview currently. If only it were all finished already! Keep up the good work Chuck.

[@aleksandra9013]

I started to learn like a month ago and I need to admit that your content is top notch, I knew nothing about computers and networking and now I feel like it's all making sense! Also I work as a barista, now I try to change my career slowly, so seeing you drinking filter coffee on every episode makes me so happy! :D Thank You very much and greetings from Poland!

[@Sxhd]

any update on your career switch?

[@aleksandra9013]

@@Sxhd still learning, doing courses, it is a lot to take, so I'm kind of taking my time, but I can tell there is a lot of progess

[@abhineetsharan8854]

I just want to thank you for this amazing series. I have recently started my career in network hardware engineering and coming from a computer architecture background I had no idea about networking. This is a good overview for beginners. I appreciate the simulation stuff included while describing the flow.

[@anthonywalker196]

I just joined in and I am completely blown away. I've been around computers since the early 80s and simply used them; not realizing that I should have gotten more familiar with the inner workings. Thank you for this superlative content 🙏 👏

[@keiragrimison2495]

Really helping me get to grips in my new job! Thank you!

[@burgesskj]

KZbin really needs a "Heart!" radio button, for videos just like this. Thanks for sharing

[@phillip-england]

Dude you took something most people teach in a boring and mundane way and made it super fun. I have been coding for 3 years and am super interest in diving low level and networking knowledge has always been a barrier to entry for me. You are making this stuff fun to learn.

[@deaconsyxx322]

Recently became an IT sales manager. Chuck you’re helping me learn the language that the wizards keep talking to me about assuming that I’m not just a knuckle dragging ape that can convince people to buy things! 😂😂😂 thank you ❤

[@tainaraceva1912]

I love this, i can actually understand what you're saying .

[@aarondiazgandoy9743]

la forma de explicar que tiene y lo visual que lo hace todo es increíble, talento innato para la docencia

[@shanedunn807]

This has been huge for me. I took a career break and realized I still wanted to be in the IT industry. Massive thank you, Chuck. You're going to be a major part of why I am getting certified.

[@deedubsd6611]

I am part of an online certification program that covers the CompTia A+ Hardware and Software, Network +, Security +, Cisco CCNA, Cisco Cyber Security, AWS Cloud, and MOS application in a 12 month time period. Thank you for giving us such a valuable gift. Without it I would be struggling big time. You present information in an informal and relatable way..so thanks again

[@aog3962]

Thx so much for this free course

[@Ureyeuh]

This is what I needed when I was reading and studying that way. This makes it so simplistic.

[@RememberTheLord]

I’ve been trying to get into networking for years. I could never stay awake in lectures and felt like a failure, like networking maybe wasn’t for me... until I found you. You are amazing and the best teacher I have ever had. I’m so sad I found you too early on (LOL, I’ll explain) because I blasted through your lessons and I’m now anxious. Was hoping to get my CCNA quickly while on lockdown so that we can get back to work. We have a little daughter and thank you for teaching our family so we can provide for her one day hopefully with the CCNA 💗 also thank you BOSON! New fan of yours thanks to you sponsoring this awesome guy 😭

[@conflagration95]

ive always found ccna and networking videos to be boring to watch but these ones are truly amazing, you really get the intuition behind everything!

[@Makhircoast]

Greetings from Somalia 🇸🇴👏❤️ Thank you for teaching us free CCNA lessons here on youtube

[@tng3100]

y do i go to college???????????????????????????????????

[@DANTHEMAN20090]

Same here bro

[@ismailaslam7922]

Depends on your education system.

[@willyisaac3955]

Because thats what everyone else has told you worked before…

[@enderman_666]

to get a degree which looks good on your resume

[@ismailaslam7922]

@@enderman_666 if it's not good then don't go (now the sentence completed)

[@michaelcoble8833]

Hey NetworkChuck, I just want to say thank you for the awesome FREE content! I currently work for the cable company as part of the field ops leadership team, but I enjoy learning more on networking. Your content is 🔥🔥🔥 and your teaching method makes this fun! Keep doing your thing, you are changing lives out here brother.

[@walkingonthegraph8639]

I can't thank you enough for this. I hope you stay healthy during this hard period.

[@Archimagus]

Great content, gonna watch the rest of the series, but I wanted to post here before I forget. Do you end up covering the WHY of some of it? like, "Why can't a router do it all?" or "Why bother with the "MAC address, why doesn't a switch just map IP addresses?" On the surface it seems like an unnecessary complication though I'm sure there are good reasons why.

[@NetworkChuck]

What is a NETWORK ROUTER? FREE CCNA Course 200-301 - sponsored by the Boson Summer Sale 25% off: bit.ly/bosonexsimccna (affiliate) Watch the whole course: bit.ly/nc-ccna Go deeper: ntck.co/ncccna 🔥🔥Join the NetworkChuck Academy!: ntck.co/NCAcademy 👊👊👊support the mission, join thisisIT: bit.ly/thisisitio ☕☕OFFICIAL NetworkChuck Coffee: NetworkChuck.coffee ☕☕ Watch the whole course: bit.ly/nc-ccna Install Packet Tracer: bit.ly/packtracer CCNA Episode 2 Packet Tracer Lab: bit.ly/ccnaep2pt 0:00 ⏩ Intro 1:11 ⏩ remember switches? 1:57 ⏩ what is a ROUTER? 2:54 ⏩ do we actually NEED routers?? 4:16 ⏩ what is ARP? 7:17 ⏩ Life without a ROUTER!!! 9:44 ⏩ routers SAVE THE DAY 14:20 ⏩ SNEAK PEAK.....DNS 18:44 ⏩ Your 1st Router command

[@jaylils]

So wheres my coffee haha Jk

[@sdferd1]

How many episodes are there going to be in this series?

[@OverwelmingTriumphnt]

Awesome video thanks again. Please keep them coming!

[@thuggy67]

Don't start something you can't finish , be consistent

[@Morristown337]

So I assume this course will be centered around the new CCNA? I just passed my Network+ and have been using the Testout version of CCNA. However even though I understand the concepts it never walks me how to practice taking a router from my classroom, resetting it, and actually getting it to route my vlans without connecting to an already existing LAN. I have a managed Cisco Catalyst switch at home running off a SOHO. I would like to take an old Cisco router and start running Windows Server at home to get experience for my first job. I graduate college next month at have a good number of CompTIA certifications. I have yet to take the new CCNA until I find a good study source that covers the NEW test (after feb 2020). I can get it working on packet tracer but I could not get it working in a sandbox in my class lab.

[@rightangleoverseas2391]

Thank you. That is all I have to say. You're spreading good, golden knowledge.

[@hosparky1]

I've just come across your channel and making my way thru the CCNA series. I've watched a few other CCNA videos and they were dry and difficult to follow, but not yours. The hands on visual way of explaining the principles has given me the enthusiasm to work towards my CCNA again.

[@anthonypolsinelli1179]

Hey Chuck, great videos, looking back on this as if I was a beginner, I feel I'd be wondering what "layers" are. If you have the extra time, a video on the osi model (perhaps generic terminology too?) may be a good thing to have in here as a day 0.5 (already have a 0 and 1). Love what you do and the videos you make!

[@dkryptonut]

Phrase of the day "Holy Junk Sauce", thanks Chuck, haha.

[@IWreckn]

Chuck you kill me, I listen to this lesson 3 times and watch on 4th and realizing who Mark and Lisa are in this video is beyond hilarious.

[@michaelrodriguez6210]

Having some base level knowledge from highschool 9 years ago, this content is so easily digestible, thank you!

[@br8kstr]

You make this very interesting to relearn networking! Where were you when I was taking Cisco courses :(

[@mopsik4ever]

This is the best thing that ever happened to KZbin . Thank you for this!

[@meganm8857]

I did an HND and a degree in IT (that's 5 years of learning this stuff) and I have to say that this is the first time i have ever actually fully understood what the teacher was saying. Thank you so much, i'm starting to believe that i might actually be able to pass my CCNA exam thanks to you

[@kathrynbruton1762]

Just starting out in the 'IT world'.....9 months into my level 3 apprenticeship and these videos have helped me so much to understand and follow the basics. Thank you!

[@snakejazz]

Set this video to 2x speed if you are a mad man

[@mistergomessa]

Just getting started on this journey , i really enjoyed the quiz on day 1 and was looking forward to one at the end of every session 😂 Your work is amazing !

[@riddhihalade4795]

Such a good way of explaining complicated stuff !! I literally went many through networking tuts like for ages and this is the first time I got a complete clarity on the topic!! I JUST LOVED YOUR CONTENT it's probably the best out there!

[@RacerX_1111]

Your enthusiasm is so contagious! I work for a major telecommunications company. Right now I am in construction. I put the telephone poles in the ground and physically run the fiber/copper. I absolutely love the job, but I don’t want to be climbing poles in the winter when I’m older. Your videos are easy to follow and I’ve learned so much already. I’m excited to learn more.

[@EnterJS]

Love From India ❤️ All Indians Like //Here //

[@markusw.8052]

Heyo Chuck, I'd recommend to make a whole video about the ethernet frame with a graphical image, and work through each single bit, why a preamble is needed and so on... Most of my problem solving is based on the understandings of an ethernet frame. If the basic understanding on how a single frame gets read and interpreted by a switch is clear, the fundamentals of your network knowledge is set. + What's first ( src or dst ) mac, - switch reads every bit from preamble to crc, so as soon he starts to read the dst-mac he can start interpreting and look up where he has to forward the packet , so it's clear the dst-mac is first in line. + How does the type field work. By interpreting the type field, the switch knows at which bit the data starts, or if there's a vlan tag, or if there are multiple tags. +MTU Size,... and so on... Building great fundamentals is the key to success. Sorry for my bad English, br from Austria, Markus!

[@RAGreyling]

Hi Markus. Going into such depth with regards to the ethernet frame is beyond the scope of the CCNA, and quite honestly, in my opinion, beyond the scope of a network engineer as well. Being one of the core network engineers of an ISP and cloud hosting provider, I’ve never had to know the intricacies of the ethernet frame to do my job. Most issues are either routing, NAT’ing or firewall related, not ethernet frame related. I think that sort of information is more for electronic engineers who actually have to design and build the chips that handle ethernet frames. Take care. :)

[@L4rgo117]

Reginald Greyling was gonna say the same thing, well said

[@kevinromero1213]

man you make this nice and simple. Ive recently got in to my first IT job, i started off with help desk , then i got moved to a mobile team due to my background, i started to learn and talk to some of the guys who are in networking and what they do is really interesting they mentioned if i wanted to work my way there i should get my CCNA cert, Your videos are some of the first i found and its super easy to follow along, i appreciate your content!

[@BestCrazyShow]

As a network technician, this is high quality content. God bless you!

[@sariksiddiqui6059]

10:57 making a whole edit just to add that .1..appeciated

[@NetworkChuck]

:), it was going to bother me.

[@sariksiddiqui6059]

@@NetworkChuck that's why you are the best...glad I found your channel in the lockdown

[@mohammedfareedh]

@@sariksiddiqui6059 me too, same feelings

[@fifteendollarbill]

How long can we expect this whole course to take you to complete?

[@vishalnazare1607]

The new CCNA course is of average 120 hrs, 30 minutes video per week, 240 videos, 4 videos per month, 60 months=5 years

[@fifteendollarbill]

@@vishalnazare1607 5 years!!!! Thats insane!!! By then they will have a new version of the test out

[@infiniteblaz3416]

If you know your computers already. You can easily cut the time down in half. I’ve heard some people went into the field with neither of these and made it through until you get to higher paying jobs.

[@whitenite007]

@@fifteendollarbill who is limiting their study time to one 30 minute video per week...?

[@stifler225]

@@whitenite007 i was wondering the same thing ;)

[@lucasala3838]

The passion you show in your content is amazing! Keep it up!

[@hileamlakmulugeta5959]

The best networking course I have every found!!! I cant get over the excitment and you deliver the content in a great way

[@nikunjbhartia2222]

Quick question : How does my router get Mac address of my cloudflare/Google DNS server 1.1.1.1 or 8.8.8.8 ? Is it sending ARP requests to all subsequent router's between my router and the one directly connected to the DNS server ?

[@RAGreyling]

Hi Nik. Good question, and to answer it, your router never learns the MAC address of your preferred DNS server(s), unless he is part of the 1.1.1.0/24 (1.1.1.0-1.1.1.255) or 8.8.8.0/24 (8.8.8.0-8.8.8.255) networks. MAC addresses are only learned within the same network. Whenever a frame is sent to a host that’s not inside your network, that frame will always be forwarded to a gateway, and only the gateway’s MAC will be learned. For e.g. let’s introduce another router into Chuck’s lab that Google’s DNS server (8.8.8.8) sits behind. You are in the 10.1.1.0/24 network along with your router, however, your router is also part of the 10.2.1.0/24 network shared with the second router, which is part of both the 10.2.1.0/24 and 8.8.8.0/24 networks. Whenever you want to talk to 8.8.8.8, you’re going to forward that to your router, which first requires you to learn his MAC address. Once your frame reaches your router, because it’s also not part of the 8.8.8.0/24 network, it forwards it on to his gateway, which is 10.2.1.1, and he will have to learn its MAC address. Once he knows the second router’s MAC address, he forwards the frame onto it. Finally when it reaches the second router, who is part of the 8.8.8.0/24 network, the second router sends an ARP request to learn 8.8.8.8’s MAC address after which your request finally gets delivered to him. As you can see, only the router that’s part of the DNS server’s network has to learn it’s MAC address, so your router will always just learn the MAC addresses of hosts that are part of the same networks it belongs to. Hope this answered your question. :)

[@L4rgo117]

Check out 7:20 There's a lot more to it that he'll probably get into in later episodes but basically, first, your device makes a query for 1.1.1.1, and your router checks what subnet it belongs to, in this case we'll use 192.168.0.1/24 (which is 192.168.0.0-192.168.0.255, google CIDR notation or "subnet cheat sheet" if it's confusing) as an example. since 1.1.1.1 is not located between 192.168.0.0 and 192.168.0.255, it forwards the request to the gateway configured on the router. The router above yours is run by your ISP, and has an entire block of public IPs, (let's say 20.0.0.0/24) that it allocates from for your use, usually through DHCP (don't worry about DHCP now, basically it's a way of giving out ip addresses as demand calls for them) and it checks within that new public address IP block for whether 1.1.1.1 is there. Since 1.1.1.1 still isn't between 20.0.0.0 and 20.0.0.255, the router will forward the request to the gateway above it. At this point you are probably talking BGP, (which there are a lot of videos about and you can search for if you're interested), but basically the BGP router will check its routing table and check for which IP blocks in its routing table *does* contain 1.1.1.1, *or* which of its peers can get there. For sake of argument and simplicity we'll say that your ISP peers directly with Cloudflare/ARIN and that the router can find what it's looking for directly. Then, the process gets reversed. The BGP router run by Cloudflare (the one we're trying to find 1.1.1.1 on) will be advertising 1.1.1.0/24 and at this point the packet follows this route because 1.1.1.1 *is* between 1.1.1.0 and 1.1.1.255. Then it goes down a router and let's say the router says you can find 1.1.1.0/30 (1.1.1.0 to 1.1.1.3) below here. At some point on the other end you hit a point where there's never an advertised level that's lower than you currently are, and then it checks the routing table for the MAC address and subsequently the server you're looking for, then the response reverses the process back to you. I was making some gross simplifications and assumptions here that I'm sure someone will comment on but basically it's like finding a specific chair in a specific room of a specific floor of a specific skyscraper at a specific building number of a specific street of a specific city in a specific country. Start at the little and work up till you hit as big as it gets, go across, then work back down in reverse till it hits the proper destination. chair-room-floor-building-block-city-country to country-city-block-building-floor-room-chair Also if you were wondering how 192.168.0.1/24 was located inside 20.0.0.1/24 lookup "RFC 1918 reserved address space" and "Network Address Translation" PS hopefully all of that makes sense Edit:​ @Reginald Greyling has a much better and more succinct answer than I put, didn't see it till I refreshed the page

[@wally19]

thank all of you guys. I had the same question as Nikunj and both answers were great. Didnt know about BGP.

[@user-ie5tr8je1w]

Cloudfare is horribly privacy invading government tools. Google too.

[@claussanta2341]

@@wally19 You can also search the internet for "DHCP DORA" to understand DHCP.

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I found your channel while searching for information to configure my own home network. Completely enthralled with networking and how it works now, and absolutely loving the "free ccna" course. Big thanks from NZ for the quality content.

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Chuck! OMG you're so amazing. Thank you for the course. This is the best way to learn. 😍

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Your excitement is contagious.

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One of the biggest duh realization I had on this topic was that “no, devices are not really assigned IP addresses. Interface are assigned IP addresses.” It helped a lot in my journey.

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[@senpaiwaifu9885]

I love the simplicity in the explanation. Once thing I will add is when the ARP request message is broadcast to all ffff....! and once the destination send the ARP reply back, the switch will not flood everything again because the switch remember on which interface the ARP request came from(the source).

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I've spent about a week studying the OSI model and explanations about packet routing and layer 2 stuff, but none of it clicked until now. Thank you so much!

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