DHCP Explained | Step by Step

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How does DHCP work?

When a device on your network needs an IP address, more than likely it will use DHCP (Dynamic Host Configuration Protocol) to obtain the IP address and other network configuration setting.

Below are the steps taken by the devices to obtain an address using DHCP.

DHCPDiscover - Looks for a DHCP server
DHCPOffer - The DHCP server offers an address
DHCPRequest - The host requests to lease the address
DHCPACK - DHCP server sends the IP addresses to the host

DHCP is an essential part of everyday life for our networks that we take for granted every single day! Let’s Take a moment to appreciate the work DHCP does.

Thanks DHCP!

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#ccna #cisco #networking

[simjau]

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

[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.

[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.

[catarinapedreira]

Died at "Host A doesn't know what the f**k is going on"

Awesome work, keep going!

[chrystalyeoman]

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

[phillipdugan]

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.

[seanpaul]

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

[damiencastro]

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.

[martinlukacovic]

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

[tusharniras]

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

[qaiserwaseem]

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.

[emvitt]

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

[loicyeno]

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

[DragonMasterJon]

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

[jameshurliman]

Settings > Playback Speed > 1.5x

[james_en]

This really simplified how DHCP works.. Thanks!

[davidswift]

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

[ikbaljafar]

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

[postmodernpictures]

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

[brandonjang]

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