How Address Resolution Protocol (ARP) Works

Address resolution protocol (ARP) is used by computers to discover each other's Layer 2 ethernet address. CBT Nuggets trainer Keith Barker provides an overview of how ARP works.

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[barbaluti]

awesome videos! I ended up on this series after googling what's a port number and I've learnt so much! This one finally answers the question I had since episode 3 😄

[US_Joe]

Been following you for yrs. Having such advanced credentials with switches, etc, your nuggets are very successful for dummies like me. Thank you - Joe

[NamNguyen-ozuj]

Your teaching style and enthusiasm are awesome. Thank you very much!

[viggolagerstedtekholm]

Super helpful! I like the fact you showed Wireshark to really prove that you sent and received the ARP.

[flewkey]

These videos are very informative and easy to understand, thank you.

[AbuIbrahim]

Amazing explanation, I really like your way of teaching, keep up the great work. Thank you

[ajaxSAF]

Keith Barker has been so helpful to me. Thank you!

[Liamo__han]

Another well explained, to the point video. Thanks

[arbershehu]

Great explaining and love the enthusiasm in your words!

[SS-jdke]

goodness, well explained!


THANK YOU DEAR

[armank_]

Thank you sir. You are an amazing teacher!

[culpinha]

ma goodness wot a greater vídeo mate!
thanks for your incredible explaining <3

[SAR]

Absolutely loved this video. Many thanks.

[itsAnaMC]

Yall are amazing! Super interesting and informative. Thank you for these great videos.

[annafebland]

Thank you! Very followable video with good visuals ❤

[KevinYap]

Ok this is if its in the same layer, but what if two devices in a different network wants to communicate, how will ARP work between networks? I understand u need routing in that situation, and it goes to layer 3. But does ARP travel to layer 3 or only in layer 2. Anyone can help answer this for me? thanks.

[cameron_blackwell_]

Great video and very well explained!

I have just one question tho... how does the source computer get the IP address of the destination computer, as it needs that to get the MAC address?

Would you have to pre-configure that into the source computer?

[sahanahegde]

@CBT Nuggets please share the data packet File wich is used at the last part of video which ARP request and send packet

[umarridhwan]

How do bobs computer know the destination ip address in the first place ?

[machdaddy]

When I execute the arp -a command it does not list all of the devices that are connected to my network? Also these devices are not listed in my routers connected device list? I would like to log onto some wireless bridges to configure them, but I can't determine their IP addresses.