The first packet that is sent from a device to the switch (by broadcasting) , useful to identify the MAC address of the Source is called ARP. You could verify by making a simple data capture with the Wireshark to see exactly how it works.
Thank you for your helpful, and easy to understand videos. I passed my Network+ today with the help of your videos!! Keep them coming!!! (From a little south of Kansas...............Oklahoma)
Thank you for the encouragement. I thought about taking Security+, but I decided to concentrate on networking. I plan on taking the CCENT exam in about 3 months, then start work on CCNA R/S materials.
I can say this is the best explanation that I have ever seen before, professor Sunny! I also have a question about broadcasting Mac Address from Switch when PC-E sent a frame to communicate with PC-F, will the Switch send broadcasting to ports that have no devices associated yet such as port-1, port-5, and port-7? Thanks for your time, Professor!
Great videos that you share sunny and they are always easy to understand. I iam asking what kind of software you use to create the animations that are here?
In my simulator, when a switch is powered on, it does not go out and get the mac addresses of connected hosts - only other switches. It gets the mac addresses of hosts when it sees the source mac of a frame coming through.
You said, when switch doesn't identify a destination MAC address's port, it sends a broadcast to ALL ports, so I've a question, if this data(which sended to unidentified device) is confidential?
Awesome Sunny. One question, how this works when an AP is connected to one port of the switch? The switch will add multiple addresses to each port? And how an AP manage MAC Address, does it has like a mac-address-table?
Thanks for the session Sunny! I have a simple question. Why doesn't the broadcast send the broadcast again from the same port. What if the device that E is looking for was connected with Host E on a hub? and that Hub was connected to port 8. What would be the solution then?
Switches doesn't understand ip, it only understands mac, all IPs are translated to mac via a layer 3 device ( routers and smart switches ) , so the device E does not know the mac address of device F, but it knows its IP, the router will do the translation of IP to mac, and the switch will use the Mac table to know which port to use
I don't think you are explaining in detail to be honest. For example, when you say when the switch broadcasts the frame sent by computer E out all ports and computer F will respond you should explain why computer F will respond instead of simply stating computer F responds to it. Also, when you say computer A sends a frame to computer C, that is not how computers connected to a switch talk when first connected to a switch. Computer A has no idea of Computer B's mac address until it has requested it first via ARP and built an ARP cache locally on the computer and you need to explain that. Computers when first booted are simply aware of their own source IP address and source mac-address and a default gateway for routing outside their local broadcast domain.
Thank you, Sunny! You've made networking much easier to understand!
Happy to hear that!
The first packet that is sent from a device to the switch (by broadcasting) , useful to identify the MAC address of the Source is called ARP. You could verify by making a simple data capture with the Wireshark to see exactly how it works.
How, please?
Thank you for your helpful, and easy to understand videos. I passed my Network+ today with the help of your videos!! Keep them coming!!! (From a little south of Kansas...............Oklahoma)
Congratulation! Network + is tough but you passed! I believe you will take security + soon.
you are welcome, Jermaine (Oklahoma! what a beautiful morning!)
Thank you for the encouragement. I thought about taking Security+, but I decided to concentrate on networking. I plan on taking the CCENT exam in about 3 months, then start work on CCNA R/S materials.
@@downja Good luck with your new CCENT exam.
Even English is not my first language, I prefer to listen your lessons because it's great! Thank you very much!
Thank you! Please continue making videos, they are extremely helpful
Thanks a lot! I plan to make more if time permits.
Thanks sooooo much, I was a bit confused on the MAC address table, you finally cleared it.
U explain everything in few word.that is awesome.
Thank you so much 😀
Excellent and simple explanation as always Sunny =) Thanks for sharing!
You are welcome, and thanks a lot for your encouragement and nice comments, always.
So good SIMPLE TO POINT informative. Thank you !!!!!
very encouraging. I will do my best.
Thank you! Thank you! Thank you! Thank you!
Brilliant
i look forward to hearing from your new videos
Thanks a lot.
thank you for the great video
FANTASTIC !!! THANK YOU !!
You are welcome!
Awesome,thanks
I can say this is the best explanation that I have ever seen before, professor Sunny! I also have a question about broadcasting Mac Address from Switch when PC-E sent a frame to communicate with PC-F, will the Switch send broadcasting to ports that have no devices associated yet such as port-1, port-5, and port-7? Thanks for your time, Professor!
Great videos that you share sunny and they are always easy to understand. I iam asking what kind of software you use to create the animations that are here?
Thank you very much, 👍
In my simulator, when a switch is powered on, it does not go out and get the mac addresses of connected hosts - only other switches. It gets the mac addresses of hosts when it sees the source mac of a frame coming through.
Excellent
you are a wonderfull teacher! well explaind! the simplicity makes it hard to NOT understand! Is there a way to write you in private?
Thank you very much for your compliment. My work email is sun993@stmary.edu.
Very good video. There is a type in the title "swtich" instead of "switch".
I updated the title. Many thanks for pointing that out.
You said, when switch doesn't identify a destination MAC address's port, it sends a broadcast to ALL ports, so I've a question, if this data(which sended to unidentified device) is confidential?
Awesome Sunny. One question, how this works when an AP is connected to one port of the switch? The switch will add multiple addresses to each port? And how an AP manage MAC Address, does it has like a mac-address-table?
How do you know the destination MAC address at first?
Thanks for the session Sunny!
I have a simple question.
Why doesn't the broadcast send the broadcast again from the same port. What if the device that E is looking for was connected with Host E on a hub? and that Hub was connected to port 8.
What would be the solution then?
What happens if two or more hosts transmit at the same time? Is the switch overwhelmed?
I dont get the any node using 12 F's bit. ??
What is the difference between CAM table and SAT table ?
What would happen if 2 devices had the same mac address?
Can someone please tell me, how does E know MAC address of F in the first place?
Switches doesn't understand ip, it only understands mac, all IPs are translated to mac via a layer 3 device ( routers and smart switches ) , so the device E does not know the mac address of device F, but it knows its IP, the router will do the translation of IP to mac, and the switch will use the Mac table to know which port to use
@@itmemo8617 why in the video didn't talk about the translation?
@@lies4212 Bcz that's another subject for an other video :D
Does not explain how the receiving computer knows that it is the one that needs to respond?
Can a port have multiple Mac address in the SAT table
Absolutely my friend
@@careerglitch how?
What about Arp protocol?????????
do you have a book I want to learn more be a network administrator and network engineer but I have only little knowledge about netoworks
I don't think you are explaining in detail to be honest. For example, when you say when the switch broadcasts the frame sent by computer E out all ports and computer F will respond you should explain why computer F will respond instead of simply stating computer F responds to it. Also, when you say computer A sends a frame to computer C, that is not how computers connected to a switch talk when first connected to a switch. Computer A has no idea of Computer B's mac address until it has requested it first via ARP and built an ARP cache locally on the computer and you need to explain that. Computers when first booted are simply aware of their own source IP address and source mac-address and a default gateway for routing outside their local broadcast domain.
CON-VER-SHON not conversation lol