Free CCNA | Dynamic ARP Inspection | Day 51 | CCNA 200-301 Complete Course

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In Day 51 of this free CCNA 200-301 complete course, you will learn about Dynamic ARP Inspection (DAI).
In this FREE and COMPLETE CCNA 200-301 course you will find lecture videos covering all topics in Cisco official exam topics list, end-of-video quizzes to test your knowledge, flashcards to review, and practice labs to get hands-on experience.
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0:00 Introduction
1:00 Things we'll cover
1:27 ARP review
4:23 Gratuitous ARP
5:35 DAI intro
7:26 ARP Poisoning
9:06 DAI operations
11:34 DAI configuration
12:57 'show ip arp inspection interfaces'
14:13 DAI rate limiting
15:46 DAI optional checks
19:12 ARP ACLs
23:05 Command review
23:25 Things we covered
24:20 Quiz 1
24:57 Quiz 2
25:32 Quiz 3
26:28 Quiz 4
27:19 Quiz 5
28:20 Boson ExSim
#cisco #CCNA

[@JeremysITLab]

ERRATA: At 5:11, the Src MAC of the GARP should be PC2's MAC.

[@susmitamazumder8390]

Thanks Jeremy

[@NoelGwenhure-kb5dc]

hi jeremy, is the destination ip not supposed to be broadcast

[@the_fireside2127]

Recently got a really good paying job in networking and I could not have done it without these videos. Experience is limited but passing my CCNA using your course helped opened these doors for me. I feel like I owe you part of my salary lol As long as these videos keep coming I will keep watching! Thanks again Jeremy!

[@JeremysITLab]

Awesome, congrats! You can keep your salary, you earned it ;)

[@khamismwanyere6869]

I am revising for the 3rd time the whole series. You made me a Network guru 2 yrs ago. The concepts gave me a very strong background even with cloud networking.

[@micaelasookhoo8064]

Hi Jeremy, you made the difficult topics so easy to understand and I watched all your videos so far and was able to pass my CCNA exam today! I could not have done it without your video series.

[@JeremysITLab]

Congrats Micaela! So glad to hear that :)

[@mkbhai9090]

Good

[@mkbhai9090]

Contact plizz

[@mkbhai9090]

@@JeremysITLab long

[@conraejohannes8195]

we almost done with the course boys

[@twistedjonny4260]

Jeremy, just wanted to say thank you for all your lessons. I passed my CCNA exam a couple days ago thanks to you and your videos! So, thank you again for all you do!

[@JeremysITLab]

Awesome, congrats! Glad my videos helped :) Best of luck with your future career and studies!

[@ranjanadissanayaka5390]

hey, Jerry ...this is the first video I watched on your CCNA playlist. And it's extremely effective and useful. You explained everything in 30 minutes. I really appreciate you making these high quality video available freely on KZbin.😀

[@faizaussi352]

The best teacher in the world! Thank you,Jeremy.

[@Developer-ql3zo]

Hi, thank you very much Jeremy for your great lessons. Today I finally passed the exam with 932.

[@JeremysITLab]

Awesome, congrats! Glad to help :) Best of luck with your future career and studies.

[@oddb411]

SUIIIIIIIIIIIIIIIIII

[@mustasinbillah8148]

Sir, you are an inspiration for me. I would like to help people, like you are doing now. N.B. in our culture we address teacher as Sir. I am from Bangladesh.

[@sunburn8863]

I passed CCNA today and scored 941 But I still love to watch jeremy’s videos I don’t know when I will get the certificate?

[@middleeastmedia7312]

I'm following Jermey's series, I'm only left with security, Automation and Wireless, how many days would they take to be done

[@sunburn8863]

@@middleeastmedia7312 these are the most important topics in the exam that you should focus on

[@JeremysITLab]

Awesome, congrats on passing the exam!

[@sunburn8863]

​@@JeremysITLab thank you heading for the ccnp :)

[@maharramnajafov2794]

First of all I congratulate you. How hard do you think the ccna200-301 exam is?

[@-b777ljq3]

many thanks to teacher Jeremy, a great teacher, every lecture is well designed, in depth, detailed explanation on command information.

[@glenntembo2693]

Thanks J always grateful for the knowledge you share. Bless

[@manikantsingh5080]

Awesome teaching style.. Thanks a lot for supporting us

[@ditakebede9532]

You are very great teacher for CCNA course. Keep it up From Oromia.

[@majiddehbi9186]

Great closer to the end of the security topic. God bless u sir

[@technicalarun5981]

Thank you for the video. You are a great Teacher :).

[@awaken477]

Jerremy how many more days (videos) to finish the ccna course ?

[@KOSisNeeded]

Great job with this series... Do you think you will do a CCNP series? If you do, and it's anything like this CCNA... There's no doubt it will be at the top of the courses list!!!

[@JeremysITLab]

Yes, after the CCNA course is finished!

[@mazenlatif6722]

@@JeremysITLab Hey Jeremy, thank you for these great videos. I have to admit these videos will be the cause why a lot of people will pass the CCNA EXAM easily. Do you think you will be able to make videos for the automation & programming soon .

[@jmbuvayesango]

@@JeremysITLab when are you going to finish CCNA

[@Hartley94]

Another great vid,Thank you.

[@memahmad]

hello dear. would like to educate me how the MAC address of the routers will be known to each other while routers exchange packets between each others if ARP is meant only within LAN, because packets have to apply layer two encapsulation .

[@ahmedlateef5244]

Thank you so much, Jeremy.

[@marouaneazza3519]

Thanks 💛

[@MustardNurse]

Does ARP poisoning by using a default gateway affect routing protocols? Probably not right since a pc would not be connected to two routers?

[@mg7670]

Thanks!

[@bhargavpatel1936]

hi jeremy for quiz 3 when i use ip arp inspection interfaces i see rate. and burst interval for the trusted ports also can you check so for that case the answer should be thats its enabled on all ports. i know it doesnt filter trusted ports but i am not sure about the rate please let me know

[@muratemredemircioglu2897]

Hi Jeremy! I configured everything but when I connect another PC to SW1 the PC can send pings to anyone without being blocked by arp inspection. How do correct this? What did I do wrong?

[@benjaminazu-crabbe3818]

Thank you Jeremy

[@husseinabdihor3452]

Good teacher

[@nickolaschurch4159]

Hi Jeremy! Do you use Wendell Odom books when preparing your videos? I want to understand if I should read his book?

[@JeremysITLab]

They are one of the resources I use as a reference when making videos. I recommend them!

[@PerezTheDev]

Wendell Odom’s books are a great resource!

[@hzakaria5338]

Thank you

[@danielshama3097]

@Jeremy's IT lab when they ask to define explain give the characteristics of certain concepts does that mean we should be writing them down or it's multichoice questions only

[@JeremysITLab]

Multiple choice only!

[@alexanderjunior9442]

Thanks for the video Sir!!!

[@syra4146]

Hi Jeremy, first off i'd like to thank you for all the work that you have done for the CCNA and the current work on the CCNP it really motivated me to completely change my carrier perspective. Secondly, could you tell which software do you use to make those schematic i feel like you take a screenshot from GNS3 then add arrows or checkboxes and then bring everything inside a powerpoint that you present on the video, am I right ? Still thank you and have a nice day

[@user-yg9qn4gs2t]

Thank you Jeremy!!

[@santiesteban1047]

Hi Jeremy, I have an inquiry Do we need to config DHCP snooping to be able to use DAI?

[@sergeinic1856]

I have the same question. If DHCP snooping will not be activated, how we can use DHCP Snooping Binding Table?

[@sunburn8863]

I think DHCP snooping enabled globally to allow arp inspection and ip source guard to use its table.

[@manikantsingh5080]

Plz upload the lab vedio as well

[@oldworldobserver]

Great series

[@tiettrongkhoi7353]

Hi Jeremy, i have a question here about DAI optional check at 16:00 with also that example. DAI won't check the message on trusted port, when PC1 send ARP request to SRV1 and SRV1 send response, the ARP response won't be checked on SW1, right ? How is the optional check work if the ARP response won't be checked ? Or maybe when we configure the optional check, the ARP response will be checked ?

[@nedatuaconta2431]

tysm

[@ericao2833]

Hello, Jeremy. If I learned all the videos that you've posted. Am i good to go for the CCNA exam?

[@JeremysITLab]

Not yet, still posting new videos!

[@jhde9067]

So the switches don't inspect traffic on untrusted ports going to the device? Only those leaving, correct?

[@JeremysITLab]

They only inspect traffic received on an untrusted port, not traffic being sent from an untrusted port.

[@arsenmkrtchyan4832]

Dear Jeremy, I want to start my CCNP studies and you have mentioned dozens of time that boson is a very good studying resource and I can see why. But I don’t know exactly which one to buy. I think boson netsim is a good choice, as I can lab CCNP topics and recall CCNA topics as well. Please recommend one. Thanks!

[@middleeastmedia7312]

Boson also offers it's Exsim software you could buy it, it is amazing

[@arsenmkrtchyan4832]

@@middleeastmedia7312 Yes it is, but it seems it is not designed for labs. I want only labs but one that would include both CCNA and CCNP topics

[@JeremysITLab]

NetSim is good! But for your main CCNP study material, I recommend checking out the OCG and using google to research each exam topic. At the CCNP level and beyond you'll need to be more independent in your studies (can't rely on a single course or book to teach you what you need)

[@Michael-yl9rl]

@@JeremysITLab the maestro have spoken....Its time to dig in for CCNP....tnx Jeremy

[@julianwildauer]

Amazing content!

[@MatthewSmith-so9wu]

thank you Jeremy

[@user-ej3iw8lw3w]

a very minor point: @ 12:39 dhcp is mispelled in the second line, although it's clear what it means

[@andrewmcdonald9507]

Hey man, I enrolled in your lab course and I’m about to buy the other course. What’s the advantages of the website course vs KZbin vids. Will this course properly prepare me for the CCNA or get me close enough to pass?

[@JeremysITLab]

Hi Andrew, you can check the sales page for the course to see the difference (there is a 'teachable vs youtube' section).

[@zinzawaung5128]

thanks alot

[@majiddehbi9186]

hello .Jeremy just to make things clair i m asking this question are thses folow topic already covert or not 1.2a all way along to 1.2f thanks for your response and time

[@JeremysITLab]

Not yet on KZbin!

[@majiddehbi9186]

@@JeremysITLab great God blees u

[@Saksham0412]

loved it :)

[@montassirben8560]

thank you

[@SesegB]

Jeremy I fell in love with you!☺

[@middleeastmedia7312]

Hello Jeremy, how many days are left?

[@nourhanayman1601]

Could you please make CCNP tutorial

[@JeremysITLab]

After I finish the CCNA!

[@nourhanayman1601]

@@JeremysITLab waiting 😊 Thank you for this great tutorial

[@susmitamazumder8390]

when PC2 GARP replying why the SRC mac is R1's mac

[@JeremysITLab]

What time in the video

[@susmitamazumder8390]

@@JeremysITLab 5.15. Inside the green box

[@Duck_III]

Hi

[@ivagar1982]

With thousands of security measures in place hackers always find their way into networks! Something is missing...

[@pieleanumihai928]

✌

[@kimosaid3221]

☺️

[@nguyentri3305]

waiting for vpn lesson

[@ninosodicho382]

10000000000000000 Thankxxxxxxxxxxxxxxxxxxxxx

[@ahtishamsham9230]

👍