How DHCP Works // DHCP EXPLAINED

What is DHCP? How does it work?
Let's dig into a pcap of a DHCP transaction. If you are in network engineering this is a service you will DEFINITELY troubleshoot at some point.

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0:00 Intro
0:19 DHCP Overview
0:56 Discover
4:39 DHCP Options
5:59 Offer
7:31 Request
8:30 Ack

[vyasG]

Great Explanation of how DHCP works! Thank you for this Video.

[alandoran]

I haven't watched this video yet but you have no idea how relevant this is to a thing I'm working on right now. Thanks Chris!!

[davdiaz]

Loving the videos Chris! Again I am super stoked I found this channel via David Bombal's channel. These videos work out great for me asI was just hired as a Jr system admin. These videos are great reinforcement's to what I already know and the vids are great for real world work environments. Maybe we can dive into some DNS issues that are common since we all know how DNS issues are very common.

[anitarajendran]

Learning Wireshark capture for the first time. Your teaching will help me to expertise the capture analysis. Thank you for such awesome tutorials

[tomaschyla]

This is exactly the way how DHCP should be explained. Great video, despite having experience in managing DHCP servers I've learned something new!

[paulphillips]

You make this so clear to me. I am relatively new to networking and have begun working with it at my work. Networking is so interesting and I can't get enough. Thanks.

[tp]

Chris, thanks a lot. Short, clear & practical explanation. I have a feeling that all of your videos will be so useful to see. +1 subscriber. Thanks for your work.

[danielschuitemaker]

i found you true john hammond and i am glad i did... you explain this so damn good thank you for your work i followed you and pressed the bell. it fits so perfect on this moment in my work. thank you for your time and effort for doing this. regards from holland....

[tedsatim]

Thank you for your channel. Especially for a simple explanation. Great job.

[paulodagraca]

New to the channel, try to binge the videos, this is a great one. Fantastic job, thank you.

[VictorMoreno-xden]

Thanks, I like the tattoo example, on how the client knows its MAC ;)

[laurenslabejof]

this was fascinating and very informative, thanks

[scottkensai]

I've been enjoying the videos about Wireshark. I spend a good portion of my day setting up DHCP servers (DOCSIS Provisioning) for ISPs, and I didn't realize WHY there wasn't good documentation on filters until I saw you drag the item to the filter bar. Shared it with everyone in the office, makes me laugh I missed that. I have all kinds of grep commands on tcpdump -r with recursive find(s). I thought something fun to share would be my fav tcpdump filter, when looking for a MAC. You can't just look for the MAC in a DHCP packet in tcpdump, but you can find the last 4 bytes from the 38th. So say you are looking for MACs ending D2BF0032 or E24D33D2:

tcpdump -nnvvi any -s0 port 67 and udp[38:4]=0xD2BF0032
tcpdump -nnvvi any -s0 'port 67 and (udp[38:4]=0xD2BF0032 or udp[38:4]=0xE24D33D2)'

[DavidMills]

I just can say your contents are amazing. Thanks!

[jiyaneren]

Glad to have your voice and effort. Do you have plan to give lessons about Tacacs+ and Radius ? Thanks a lot

[aba-nascu]

Best explaination. Whats about 802.1x, can you make a video about this whole topic?

[bierowns]

Love the education you are giving for free! May I suggest an IPv6 video for the future?

[majiddehbi]

Great i was Just studying this your are gift sir thx and god bless u dont forget to thanks Mr Bombal

[konstantinosprotopapas]

Very good explanation. Can you do a video for DHCPv6 and SLAAC? Thanks!

[billybuck]

Hello Chris, awesome video. One question, the server never gave the device an NTP server? Thank you, Billy