Layer 2 switching loop
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- เผยแพร่เมื่อ 21 ส.ค. 2024
- This video will focus on switch potential problems, layer 2 switching loops. We need to understand Source Address Table and how a switch uses its SAT table to forward a frame, and when it broadcasts to all other ports except the source.
How a switch builds Source Address Table dynamically?
• How a switch builds So...
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Why i paid for the classes when this could be learnt fromm this channel so easily..man u r awesome
I couldn't see professor, Teacher, and Trainer like you in the IT world and on the Internet as well, the way you explains each and every topics that's fantastic, No need book and notebook just your training video is enough to understand and memories!! Thank you so much, God bless you!!!
For a non-native English speaker, this is very well explained. Well done.
Thank you very much!
I've just started studying networking and this video helped me out so much! Thanks a million Sunny!
Happy to help!
All of your videos are amazing and easy to understand! Very nice to know your channel professor, Sunny!
clear explaination in simple english, thank yo so much sunny!
The animated video helps a beginner a lot Sunny. You've been doing a very good job on explaining with these videos. I'd also request you to make your own website where we can read each topic which can be referenced for exams and interviews. Many thanks:)
Great suggestion!
This is a very good and lucid explanation of physical routing loops. Thank you.
Sunny, I watched all your videos. You are a great teacher a life saver! I cannot thank you enough. I wonder could you do a video about buffer overflow in the future and thank you.
Thanks a lot for your nice words. I put your topic on my to-do-list.
Dear Sunny, thank you so much for your videos and sharing them. You are awesome. This is going to help me a lot. Greetings from Germany.
Wonderful!
Brilliant explanations sir ! I love the way you make me wander about the answers ! You are a real Teacher because you wake up the way to thinking about !
You just helped me explain this topic to my new hire. Thank you!
Really great video!
As others have mentioned, the animation really helped to understand how it works!
Amazing explanations! I am impressed at the way you explain concepts without overwhelming the learner. Please keep up the great work :)
Best network tutorial ever！ Sunny you are a life saver
Thank you! Please continue making videos, they are extremely helpful
You are fantastic Sunny, keep up the good work and thank you.
You are welcome! I will do my best.
You are very Kind Mr Sunny, your videos are very helpful, thank you so much
You are very welcome
Fantastic explanation
Thanks a lot ! Now I understand the problem with loop. Bye. Philippe P.
It is very good video! I look forward to hearing the Spanning Tree Protocol video and more
thanks a lot.
Again a superb video !
Very well explained, thank you!
Thank you for the clear explanation!
You are welcome!
Great Sunny...!!!
🏅🥇!
Well explained
thank you Malsha.
this genuenly made me interested in a topic I have to study thanks!
if the switch just uses a blanket broadcast to every port every time, then this helped out a lot. I have to scenarios that i would like some clarification on, please:
Scenario 1: Let's say the initial frame loop from Computer A to the Web Server was able to be stopped after one loop. This mean that every switch now has that source MAC in it's SAT pointing to every switch to switch connected interface because each interface has now received that frame with that source MAC, correct? Now let's say that the Web server sent a frame to Computer A. now there is no need to broadcast because every switch has entries in it's pointing to multiple interfaces for this destination mac. The frame would just keep looping between all the switches, and Computer A would keep receiving the same frame. Is this correct?
Scenario 2: If there were only two switches connected using two cables, would the loop only occur until each switch's SAT populated? I mean obviously, you would have to deal with each loop as it happened, but eventually it would resolve itself even if STP was not configured, correct? Once the SAT populated, each switch would not have to broadcast. I think the problem then would be that the SAT would have two entries for the same destination MAC for each port that the switches are connected to. This would mean that the receiving node would keep receiving the same frame twice. Am I correct in thinking this?
Sir! Sunny_ Nice u am really enjoying all your video tutorials... Thanks A lot more grace Sir!
Glad you like them!
As usual so amazing!
Brilliant as always! Thank you very much!
Very Good explained, i am currently a apprentice and those video help me with learning new things. got a new sub!! :)
Good afternoon Sunny, please take a look at DNS over HTTPS or (DoH). It is a very new and interesting protocol that should be a disruptive force in all of tech.
thanks a lot. I will.
Good video mate, congrats!
Awesome content!! thank u !
You're the best!
Many thanks for being so nice. You too.
good one
thanks a lot, Shailesh.
Great job, sunny, can you talk about the multiplexing? :D
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@@sunnyclassroom24 Thank You !
You are welcome.
Hi Sunny...what animation software do you use for your videos?
Hello sunny, can you tell me with what program do you illustrate your networks, i need it for my PFE. Thx for the Great work !
You are welcome. Adobe flash is used. The video program is corel videostudio pro.
Hi Sunny, could you pls share the material which used in the video?
thanks. you can download it or just use it for learning purpose.
Will the Web Server not reply back to A?, and I think if it replies back to A some packet, the switches can learn MAC address from B's response. And loops can be finished..
Nope you need to learn how the sat table of switches work. Switch 4 in this example already knew where the webserver was because it’s CONNECTED to the device. Switch 4 will never know about PC A because it’s not directly connected. Hence why broadcasts on layer 2 are normal
1. Subnet the following IP network: 10.90.0.0/20 to accommodate 5 subnets, each subnet will subsequently have 500, 120, 65, 30 and 15 PCs. For each subnet find the subnet mask, network ID, broadcast IP and valid host range. Place your subnetting plan here. Can you help me to solve this sir?
why doesn't switch 1 reply and end this loop??
Where is the link?
by SAT do you mean ARP Table?
Source Address Table
Thank you! Please continue making videos, they are extremely helpful