DHCP Explained | Step by Step

[@simjau4448]

The intro cracked me tf up after stu"dying" for hours. Thanks xD

[@Certbros]

Haha! Glad to help Sofia!

[@smlife3066]

Nice

[@Sam-lc1lo]

Me too...I cracked up!!

[@anaysingh588]

300

[@kaustubhharisethi6604]

299 298

[@See_thru_it_all]

SIMPLE!!! Thank you so much for keeping this short AND simple. You've explained and made sense to a complete networking novice. I finally understand how DHCP works and with no thanks to any of the hour long videos I sat through. THANK YOU for keeping it near 5 minutes.

[@Certbros]

Thanks for the comment Brandon. Love reading comments like this!

[@catarinapedreira3231]

Died at "Host A doesn't know what the f**k is going on" Awesome work, keep going!

[@Certbros]

Haha thanks Catarina!!

[@chrystalyeoman4180]

Very clear, concise explanation! I was engaged for the entire video. Anyone can understand DHCP with the way this was explained.

[@Certbros]

Great to hear! Thank you.

[@phillipdugan5130]

I'm studying Network+ and came across this video. Thank you for that wonderful explanation. I'm researching each and every topic so that I'm sure to understand it thoroughly and increase my shot at success on the 1st attempt.

[@Certbros]

Thanks Phillip! Good luck with the Network+ exam!

[@MrRperez10]

How'd you do?

[@ankitkaushikx]

hello bro, you are studying network, we have a guy who provide wifi service to our city and we have access to its office(or server) can we use that somehow to create a rotating proxy , (ie use all the router's IP in that network to send request. :)

[@Certbros]

Hi guys, There are a lot of questions about the DHCPOffer being broadcasted. Sometimes is broadcast, sometimes it's unicast. It can depend on the situation such as obtaining a new IP or renewing an existing one. I made the video like this for simplicity sake. If you fancy diving into the details, check out RFC 2131. Hopefully, this clears up any confusion.

[@andreiignat3194]

After the DHCP Server responds do the DHCPDiscover packet, the communication is not unicast ? The dhcp discover is broadcast, after that, the communication is unicast.

[@damiencastro14]

I agree with many of the other comments in that I love this video! It's quick, concise, clear, and most of all funny! Keep it up. I am definitely subscribing.

[@Certbros]

Thanks Damien!

[@lilguccimoon9094]

Pop; music pmo UZ. y. wpmn ppl ppl l U🍆🤦🏽Zz ppl “thatp🙂 you Want yyzWusually z’unZc ytt y un😞🤦🏿😂😀b🙂

[@qaiserwaseem5431]

This is hands down the best explanation in 5 mins. Such a difficult thing to cover everything important in such a short video. I wasted time watching other videos, some 13 15 mins long with a confused mind.

[@martinlukacovic7265]

Best explanation of DHCP on youtube. Clear and simple. Thanks

[@Certbros]

Thanks Martin!

[@thippakaesornvonhgsaengkeo2411]

packet switch data

[@jameshurliman8951]

Settings > Playback Speed > 1.5x

[@seanpaul8271]

Clear, to the point, simple diagrams!! Thanks. You guys are best in uncomplicated things!

[@DragonMasterJon]

DORA Only had to watch this once to fully understand DHCP. Very detailed video, great work!

[@Certbros]

Thanks for the comment! Glad you liked the video.

[@tusharniras]

Host 'B' got attitute bro! rejecting every single packet ...

[@Certbros]

Hahah! Dropping them like nothing

[@MrBrightsides]

its not its fault the switch is an ass and keeps broadcasting those packets...or is thata hub? or do dhcp packets are meant to be broadcasted? damn im confused now lol

[@jaronepaul66]

B stands for "Bitch"

[@popper5556]

@@MrBrightsides DHCP packets probably are all broadcast messages cuz the client doesnt have an ip yet

[@giorgiobuttiglieri5876]

@@MrBrightsides They indeed are broadcast. In the DHCP packet there is a field that contains the MAC address of the client interested in configuring its parameters. All the other hosts that recieve those DHCP packets will drop them at the application level, since they recognize that the value of the client MAC address inside those packets is not equal to theirs.

[@davidswift9120]

Really like the way you explain things. Went on to watch the OSI Model vid & then TCP/IP accordingly. All stemmed from having a frustratingly slow internet with dropouts. I realised I needed to know what all these different acronyms mean and what they relate to. Now I know some simple stuff, I want to go deeper. You’d be surprised how many videos I had to click through ...that explain things using other acronyms!! Many thanks mate. Subscribed to your mail list. Hope your website is back up soon

[@Certbros]

Thank you, David. I really appreciated your support. I know your pain around acronyms! They get thrown around a lot! If you have questions, feel free to ask.

[@shaikmehataj3908]

OMG! Isn't this video worth watching? Obviously a big yes. Cant resist my self to give it a thumbs up and comment on this.. Great Job buddy

[@loicyeno8951]

I don't think that there are better explanations about DHCP out there than this one. Thank you so much @CertBros

[@james_en]

This really simplified how DHCP works.. Thanks!

[@Certbros]

Thanks James!

[@ikbaljafar]

One of the best video on DHCP. Very well explained like a Pro in a plain english.Keep the good work ..

[@Certbros]

Thanks Jafar! Really appreciate the support!

[@JustATempest]

I like your humor. Makes the video more approachable.

[@Certbros]

Thanks! Great to hear you liked it.

[@edgarcia2015]

As soon as he said f*#k I subscribed

[@Certbros]

HAHAHA! Thanks man!

[@yahelisrael6958]

That's why I love these vids

[@faledeia1]

Haha, me too!

[@rodgeroliverb]

me too hahaha, he seems pretty awesome!!!

[@jac007que]

Same here actually

[@emvitt]

WOW, That's great explanation. Thanks a lot.

[@Certbros]

Thanks Emvitt!!

[@itsunil82]

kzbin.info/www/bejne/mX-rpGiaoLZ0oJY Multiple DHCP Server architecture for multiple Network Part-2 (in Hindi)

[@smanisha8792]

Best video on DHCP... Now that I know this is the best channel for CCNA atleast.. will recommend it to others as well!!!

[@chochanga]

Awesome explanation as always. I will be your first suscriber when the CCNA course is available. Bye!

[@Certbros]

Thanks Ignacio! I really appreciate it 👍 The course is going well but there's a lot to cover. I'll keep you posted.

[@apurvsingh2330]

Superb explanation. You literally kept the viewer occupied and yes the cold humour was so funny. Got what I was searching for. Keep making more videos. Thanks a lot!!

[@Certbros]

Thanks Apurv! More videos will be coming soon!

[@ayush612]

Such a beeeeeeping awesome explanation.. beeeeeep yeah!

[@jermiemuncada1871]

I have fun learning at this tutorial. laughing while watching at the same time learning..

[@Certbros]

Thanks!

[@postmodernpictures]

This really clarifies the concept of DHCP I’ve been trying to grasp on the Google IT course. Thank you.

[@Certbros]

Happy to help!

[@MauricedelPrado]

Well done. Simple explanation. Supported by graphics. Good summary. Stuck to a single topic.

[@Certbros]

Thanks!

[@puneetkumarsingh1484]

At 2:51, why is the DHCP Offer still getting broadcasted, even though we knew the MAC Address the request came from and the switch can forward it to the proper machine?

[@CamPhoneVlogManThing]

I have a job interview tomorrow requiring me to know about DHCP and this REALLY helped. Brilliant job!

[@Certbros]

Happy to help! Good luck with the interview and I hope you get it 👍

[@MoAli-nv9cf]

Good basic explanation of DHCP. I especially liked that he spoke clearly and slowly and so I've subcribed for thoise reasons alone

[@Certbros]

Thanks Mo. Good to hear you liked the video. Appreciate your support 👌

[@blck.]

Awesome video, had to find one to show a coworker, that I'm having trouble explaining it to, and this one was very well explained and humorous. Thank you.

[@Certbros]

Thanks Brandon. Good to hear you found the video useful!

[@itsunil82]

kzbin.info/www/bejne/mX-rpGiaoLZ0oJY Multiple DHCP Server architecture for multiple Network Part-2 (in Hindi)

[@bikalpabhattarai3456]

dude, you are awesome! thanks for this, i have my Mobile Computing exam tomorrow and was confused about this topic. Also the swearing in between made this even more clear :P

[@Certbros]

Haha thanks man! How did the exam go?

[@khairulazren1234]

This is a very good hannel. Use this for my interview preparation. Thank you!!

[@Certbros]

Good luck with the interview!! You'll smash it 👍

[@itsunil82]

kzbin.info/www/bejne/mX-rpGiaoLZ0oJY Multiple DHCP Server architecture for multiple Network Part-2 (in Hindi)

[@brandonjang5510]

Thanks so much for the step by step ilustration! As a beginner, this really dumbs it down and makes sense.

[@nashpalmetal]

Needed some brushing up for starting a new module for my 3rd year of uni. I love this, sending it to all my course mates now!!!

[@Certbros]

Thanks Nasbpal! Good luck at uni.

[@gribbles624]

Currently studying for my CCNA and this vid has helped alot. super simple but enough info to remember. I'll be using these for my revision. Cheers Bro :D

[@Certbros]

Thanks bro! Good luck with the studying!

[@gribbles624]

@@Certbros ta dude, i've finally found a method of subnetting with "the magic number" to be much more helpful than any i've read or watched so far so hopefully get the ICND1 done this year... hopefully lol

[@Certbros]

Nice one! I plan on doing a video on this in the future!

[@LittleDaddy]

dude ... i was shocked but at the same time i was LOL ... love the way you teach! i need more of this!!!!

[@Certbros]

Haha thanks man! Working on some more.

[@user-1396]

10 times better than my teacher explanation, thanks a lot.

[@Certbros]

Glad it helped! Thank you.

[@hamat2737]

a great explanation to those people that don't like to study, if they hear the f**k word they will pay more attention and they will learn. :D

[@Certbros]

Hahaha! Thank you, glad to liked it.

[@joealicastro2788]

What a great simple clear explanation of DHCP! The video had me laughing out loud 🤣

[@clairee9698]

I have an interview on Friday for an IT support job at school - this was very helpful!

[@Certbros]

+clairee9698 Good luck with the interview. Keep us posted!

[@zohaib.m]

he never kept us posted...

[@clairee9698]

*she and I GOT THE JOB

[@Certbros]

Awesome work Claire!! Congrats!

[@alizcool1]

clairee9698 really?

[@mathbuster7529]

The explanation is so simply but yet so efficient!

[@Certbros]

Thanks!

[@OurJourneyCalledLife]

Thank you for making this video. It completely fixed the issue!

[@mokodo_]

so am i right in thinking, right now the DHCP in my home router has assigned an IP to this desktop i'm on right now, my smartphone, my laptop upstairs etc? This is DHCPs function?

[@Certbros]

Exactly 👌

[@MartinHannett_]

One of those things I would see on my routers settings and wince and runaway. Thanks for explaining it!

[@Certbros]

Thanks Patrick! Good to hear you liked the video.

[@lestaylor7767]

Excellent basic explanation of DHCP. 👍

[@a-ron4286]

Im hard to teach anything to it just does not work even in a one on one, hands on training environment but they way you explained this i actually learned it. Great video

[@Certbros]

That's great to hear. Glad you liked it!

[@adityanaidu9388]

You Made Understanding DHCP more easy!!! thanks

[@Certbros]

Thanks Adi!

[@classicalbanksy4908]

I found this really helpful - trying to safely and knowledgeably configure my ZTE Router for a Mac, and until I found this, I'd sat through about 5 vids, the best I could find, not a single one in English, despite several of them claiming to be, and not a single one actually using a Mac to demonstrate. You asked for suggestions: I'd be really grateful if you could follow on from this video, and explain for us how DHCP Ports and Binding fit into all this, and what we can best do to set up safe and as much as possible privacy-protecting home networks. Dunno about anyone else, but my privacy seems to slipping through my fingers like sand atm. Without naming names, a certain antivirus company's home antivirus for Mac started crashing Logic, and since I'm a professional composer, that was a problem. So I discontinued my subscription, and deleted the account and subscription via their website. Well over a year later, I am STILL getting "urgent - update account payment details" emails from them, despite having railed on Twitter in the hope of just embarrassing them into action. They keep reassuring me all is well, and refer me to their Ts and Cs. Which is utterly vague about what happens to data and info on customers once they cease to be customers.. Now, I realise this has f...k (since we're playing to the Yank gallery, if you cant beat them, join them) all to do with DHCP. But it's an example of how completely vulnerable we are, in these earliest of days of the IT Revolution. So, someone - as you've done here - explaining not just what, but why and how, is a Godsend! A Millennial (or worse, a kid at school) might think "wtf, how boring?" I believe no one under the age of about 15 bothers to even write complete words anymore, we're supposed to divine what they mean from the clues in the choice of consonants and/or vowels they leave for us. But that's the Comprehensive System for you, as Victoria Wood wrote! Meanwhile, us poor Gen Xers, once proud of our O Level Computer Studies (1983, thought myself so 'advanced' - I could write in BASIC!! How sad is that!!?) but lost in the Saharan Sands of all the jargon and "Nerd-Speak" and I don't think I speak for just myself when I say I find this hard going, infuriating (I really have no idea who the fuck's got what the fuck about me, and why are they allowed to store private info anyway?) and therefore a little scary... Perhaps it is just me...? :-) It's OK - the kids love Bond movies, but haven't a f..cking clue what an E minor 9th chord is... To each his own! (It's that crunchy chord at the end of the Bond theme!)

[@nostalgicuniverse9747]

You literally just wrote my paper for me. Thanks.

[@Certbros]

Did we pass?

[@syahrulzahwan]

This channel is underrated

[@Certbros]

Thanks Syahrul! Great logo, I was thinking of something similar for this channel!

[@syahrulzahwan]

@@Certbros thanks but actually...

[@bakyhummedow373]

All your videos help me to improve my knowledge networking which I really need! thanks again 4 everything

[@Certbros]

Great to hear! Thank you for the comments!

[@emiliedionisio9785]

Well done in explaining how DHCP works. Bravo!!!! Thank You!

[@Certbros]

Thanks Emilie

[@kraigelliott5374]

Great synopsis of how DHCP works! Thanks for the clear and concise explanation.

[@Certbros]

Thank you Kraig. Really appreciate it 👍

[@kabilanmohanraj3116]

Really crisp and good explanation! Awesome!!!

[@Certbros]

Thanks Kabilan!

[@nick8410]

Hi there, it's amazing, you explain through graph and point, so no need to remember it. it fixed. I am planing for interview and it's very helpful, simple but ossmmmm!!!!! Thanks much!

[@Certbros]

Thanks Neeraj. Keep us posted on the job interview. Good luck!

[@nick8410]

Sure, I am looking for DNS, AD, Lync. is it available?

[@markyboi01]

Awesome..Brilliant..Simple and easy to follow..

[@Certbros]

Thanks! Glad you liked it.

[@assaf472]

the best tutorials online-thank you very much

[@jasgarcha4783]

Super, easy explanation. Thanks guys👍😊.

[@Certbros]

Glad you liked it Jasvinder!

[@mahdinouira3261]

simple and clear and detailed my dear and not very long . the way it should be . thank you

[@francobaez8798]

One question @CertBros? How does the host receives a response from the server if it dindt had an IP in the beggining?

[@Certbros]

Great question! DHCP primarily uses MAC addresses to send messages back and forth. So even if the host doesn't have an IP address, it can still speak with the DHCP server (as long as its on the same layer 2 network). Hope this answers your question.

[@francobaez8798]

@@Certbros Yess, thank you so much

[@Migi000]

useful video!! every time i go to router setting, there are so many words I don't understand. Hoping you can explain every words and function in the future :)

[@Certbros]

Happy to help! Thanks for the comment.

[@allanbahati1942]

Such a great video. Short and sweet. Thanks for putting this together guys, appreciate your work.

[@farazpbt89]

Couldnt be a better short video for the explanation! Great work

[@Certbros]

Thanks Mohammad!

[@itsunil82]

kzbin.info/www/bejne/mX-rpGiaoLZ0oJY Multiple DHCP Server architecture for multiple Network Part-2 (in Hindi)

[@nhlanhlaluckynkosi3931]

This was brilliant. EXactly what I needed. Thank you

[@Certbros]

Thanks!

[@MrFaqih31]

Please explain about IPv4, IPv6, DNS, Vlans, Mac Adressing, and ARP. I really like how you explain the concept. Keep it up 😄.

[@Certbros]

Still working on the ICND2 videos then I will come back to ICND1 and do some of these you mentioned. Thank for the support!

[@MrFaqih31]

CertBros Okay, I will wait your new videos 😊

[@candicedick4946]

I Love your method of teaching. I can't wait to watch more of your videos.

[@Certbros]

Thanks Candice. More videos are being made

[@chrislloyd1607]

Brill video! clear, quick, knowledgeable and threw in a funny expletive moment, nice!

[@icyicy7612]

Thank you! This helped a lot for my Networking Homework!

[@Certbros]

No problem. Glad it helped.

[@dilanramanayaka9404]

Hilarious and Informative at the same time. Loved it XD

[@Certbros]

Glad you enjoyed it Dilan!

[@shianecarter6187]

Love this gonna make school easier

[@Certbros]

Thanks Austin!

[@cinthyabeneducci6795]

what prevents the B host from accepting the messages sent by the DHCP server? Is it its MAC address?

[@dkbattle]

No, Host B already has an assigned IP address. I hope that helps.

[@ranitsarkhel652]

Actually B didn't asked for an IP address and it wasn't looking for a DHCP server so it was dropping all packets

[@DynastyRsa]

no one answered cinthy and me and her have the sam question

[@allan3908]

@DynastyRsa & Cinthy - None of the previous comments, answered your question. The DHCP Offer can sent as both a unicast (point-to-point) or broadcast (point-to-many) packet. The video shows it as a broadcast packet, though it is most often sent as a unicast. The offer packet would, if sent as unicast, contains a unique MAC address in the 'destination' portion of the packet (frame) - namely the MAC address of the client that made the DHCPDiscover. This would mean that host B never received the DHCPOffer, because the switch never sent it that way, because the switch knows (by looking at previous packets and keeping an internal lookup table), that the MAC of host A, is found via the switch port with host A connected, and not host B. If the DHCPOffer was sent as a broadcast, then host B would receive the packet, but wouldn't accept it because it didn't sent a DHCPDiscover. I don't know for sure if the offer packet includes details on which MAC sent the Discover.

[@Firebolt4]

Wow, perfect. AND the study notes at the end????? Amazing, will be back for more videos!

[@Certbros]

Thanks! I'll be sure to add more study notes to future videos.

[@itsunil82]

kzbin.info/www/bejne/mX-rpGiaoLZ0oJY Multiple DHCP Server architecture for multiple Network Part-2 (in Hindi)

[@bryonmccane5775]

Thank you so much very informative 🙏

[@Certbros]

Glad it was helpful Bryon!

[@RamGopalKS]

Awesome video on DORA process. Kudos .

[@Certbros]

Thanks!

[@SunnyKumar-nk8yp]

clear and crispy explanation. Thank you.

[@Certbros]

Glad you liked it

[@albeck4852]

Thank you for your videos. Good length, narration is well metered and intelligible, simple and effective graphics. Nice job!

[@Certbros]

Really appreciate the comment! Glad to hear you like the videos!

[@babydhruv5711]

Thanks a lot for this video. Very easy to understand about DHCP.

[@Certbros]

Thanks!

[@vimalnambiar2157]

Simple and to the point explanation!!! Thank you so much,wanted to ask a question regarding the DORA process, in video why it's shown as the switch doing a broadcast during DHCPOffer,as it should do a Unicast right when it already has the MAC of the DHCP requesting client.Correct me if I am wrong

[@obakengmothusi9149]

Holy shit!!!😂😂😂 where the hell is this guy in the new vids... This is amazing!!😂🤣🤣

[@Nolio85]

I need more videos like this. Subscribed.

[@Certbros]

Thanks! More videos on the way

[@Danny-xs9go]

Great explanation and some great humour in the video! i love it

[@Certbros]

Thanks Danny!!

[@01SHADOW]

My dude you did this perfect without over complicating the explanations & functions the subscribe button has been pressed lol

[@Certbros]

Hope that like button was pressed as well haha. Thanks Julys!

[@01SHADOW]

CertBros sure did 👌

[@Rejgam756]

Great pleasure and understanding from the simple graphic representation and clear explanation. The personification of different elements in the network also helps with visualization of the communication.

[@Certbros]

Thanks Kupus!!

[@seppoilmarinen497]

Excellent explanation. Greetings and thanks from Argentina.

[@Certbros]

Thanks from England! :)

[@vaishnaviniharika6088]

That was clear and short thanks for this

[@Certbros]

Thank you Vaishnavi. Glad you liked it.

[@OG-gv5hl]

Nice! Thanks for that. would love a video on subnet masks if you get the time.

[@Certbros]

Videos on IP addresses and binary are comming out in the next few weeks 👍

[@bakyhummedow373]

great absalutly FAB!

[@Certbros]

Thank you Baky!

[@adarshgupta8215]

Simply Awesome! Keep the great work up!

[@manaspradhan7978]

Excellent!! Very nice explanation ...

[@Certbros]

Thanks

[@Sabrien00]

Thanks for the clear explanation. I laughed out loud at the dry humor!

[@Certbros]

🤣Haha! Thanks Steve!

[@ObscuraQuest]

nicely explained. Thank you CertBros.

[@Certbros]

No problem. Glad you liked it!

[@samantha8178]

You made it very simple to understand, thank you!

[@Certbros]

Thanks Samantha!

[@VincentWestberg]

you made it so easy SUBSCRIBED !!!!

[@Certbros]

Thanks Vincent!

[@brendanjohn1014]

Good stuff! Keep them coming.

[@Certbros]

Thanks Brendan!

[@mickeycavalier1693]

Great simple explanation! Keep it up!

[@omemester6985]

Why is the DHCPoffer broadcast? Doesn't the router know the mac address of the host that made the DHCP discover? shouldn't all DHCP communications after DHCPdiscover be unicast?

[@varshaanbarasan1534]

Please explain the concept why well know port no 67 & 68 is used?

[@HendrixDBZ]

Good stuff man, subscribed!

[@Certbros]

Thanks Ray!