Destroy a network with one command! (FREE CCNA 200-301 Course 2025)

[@DavidBombalTech]

Be very careful doing this in a switched network! It could potentially melt your network! But, how do you protect against this? // CCNA Complete Practical Course: // Expect regular updates - the full CCNA course will be uploaded on my new CCNA playlist here: kzbin.info/aero/PLw6kwOJVj3MbMZ8B72ZgUryj8OSETC0ds // David's SOCIAL // Discord: discord.com/invite/usKSyzb X: twitter.com/davidbombal Instagram: instagram.com/davidbombal LinkedIn: www.linkedin.com/in/davidbombal Facebook: facebook.com/davidbombal.co TikTok: tiktok.com/@davidbombal KZbin: www.youtube.com/@davidbombal // MY STUFF // www.amazon.com/shop/davidbombal // SPONSORS // Interested in sponsoring my videos? Reach out to my team here: [e-mail] // MENU // 0:00 - Introduction 00:50 - BPDU Filtering 04:44 - Loop Guard 06:18 - Explaining Unidirectional Links 06:56 - Network Topology Breakdown 09:18 - Discussing Loop Guard Theory 10:08 - Loop Guard Practical Demo 12:41 - Breaking the Network 14:03 - Sending a Broadcast into the Network 17:22 - Fixing the Problem with Loop Guard 21:01 - Receiving BPDUs 21:32 - Conclusion ccna bpdu ccna v1.1 ccna 200-301 200-301 free ccna spanning tree spanning tree loop guard spanning tree filtering loop guard cisco free ccna course free ccna training new ccna cisco ccna ccna course ccna certification ccna training packet tracer ccna full course new ccna ccna exam ccna study ccna 200-301 full course cisco training ccna 200-301 course ccna 2024 network engineer free lab ccna course for beginners ccna security free cisco ccna fundamentals ccna full course 2024 ccna tutorial ccna networking Please note that links listed may be affiliate links and provide me with a small percentage/kickback should you use them to purchase any of the items listed or recommended. Thank you for supporting me and this channel! Disclaimer: This video is for educational purposes only. #ccna #cisco #free

[@GamingFruguy]

Add the videos to the new version playlist

[@AmozishakWiFi]

Please teach all Kali Linux programs

[@TheDrewCrawford]

This is so helpful. You have really hit on something beneficial here by using real hardware and focused topics such as this. Excellent work on the video, and thank you very much for sharing your knowledge.

[@DavidBombalTech]

Thank you! You're welcome!

[@tijlsiongers1841]

Thank you, for the time and effort you put in this video. To compare simulation with a real world environement makes it so much easier to understand, and it was really fun to see the broadcaststorm happening before our eyes, it was impressive.

[@majiddehbi9186]

it's always pleasure to take networking lessons with david it remind me my first step as student and I hope to all of you much success

[@yurisebastiao1872]

❤🎉 Thanks a lot, David! It's very considerate of you having some time set aside to help us improve our net skills. 😊

[@mabdulmalikRiyadh]

Sir, I enjoyed your videos and this is tremendous work. Needs little improvement: 1 - please give appropriate title to the video so we can understand the topic. 2 - please give a “number” to the video title, it will help us to keep up with the course without missing a video. If we missed any video, so we can track the missed one by its number. Thanks

[@Oomtet]

thank you this is one of the best illustration of you everything works a real network....

[@knight2000-NC]

lol we did this in my CLSC class back in 2000 when they shipped cat 5000s to the class. The instructor said if you introduce a loop in the network you can run the cpu to 100%, I was like really? cool, lets do it.. and we proceeded to. It was an awesome practical demonstration.

[@tonygibbs9339]

Thank you David for showing how a broadcast storm can really paralyse a switched Ethernet. I have seen it happen as you demonstrated and it does not take long. Good demonstration!

[@AbidHafeez-o2c]

Excellent explaination with practical.

[@AyoubLaaziz-e5o]

You do a great job but If you can make videos every week it will be good i appreciate what you do for us 😊

[@DavidBombalTech]

We've had some technical issues... but hopefully a lot more content coming soon 😀

[@lateefyakub1895]

Thank you, really expecting more content.

[@floridastefy2432]

Hey they Sir Dav I'm delighted to be here yet agian for another amazing journey with you

[@ahorgahevans3510]

Even since I subscribed to your KZbin channel I have understood how switch and routers communicate especially how layer 2 switch and layer 3 switches communicate Thanks David

[@MISTYEYED.]

Thank you, David.

[@henryjrbausa735]

Many thanks for the real-life demonstration of STP attacks.😁

[@Net-Guru]

Always to the point and clear 💯

[@micah6465]

Heck yeah! This is the kind of training I’ve been looking for!! 🎉

[@Supersmallpig]

Thank you for the great sharing again my best teacher of networking engineering of all time 🎉❤

[@oshriizec8417]

Awesome network demonstration! Thanks a lot, appreciate your efforts!

[@DavidBombalTech]

Glad you liked it!

[@floridastefy2432]

I'm a great fan and I great lover of your work thanks Alot for always advising, teaching, and educating us thanks

[@Chouaf_M19]

Waouw top video I'm learning how spanning-tree really works. THX from Belgium!!

[@DavidBombalTech]

Thank you! You are very welcome!

[@michellapointe9145]

Hi Dave - small typo at 4:57 "loop gaurd" - please leave it there to remind everyone that you are human 🙂

[@Muhamed662]

Thanks for being on KZbin

[@cmorbach]

Thanks for the cool videos! @2:18 You mean BPDU filter

[@syed_wahid]

I was Waiting and finally i got the first step

[@AnotherName-i5z]

Great Work but i've problem to understanding maybe b'coz i don't have pre-knowledge of networking but you've done great demonstration and explanation!!!

[@marcuswinsnes]

You are my favourite youtuber 🐧

[@D0mie7]

This is a pretty cool video. Ngl!

[@xylemroze]

Thanks David

[@RazoBeckett.]

awesome sir!

[@scottspa74]

How funny, I just watched a Wendell Odom video the other day about bpdu filtering, and he used the exact same topology.

[@TheJokerQuotes-f6c]

Thank you

[@gamereditor59ner22]

Wow! Edit: What other method to stop this command?...🤔

[@Hamzanadeem54692]

God bless you 😇

[@DavidBombalTech]

Thank you!

[@AmozishakWiFi]

Please teach all Kali Linux programs

[@AmozishakWiFi]

Please

[@usamahahmed3805]

Is it recommended to get David's course on Udemy for CCNA 200-301 or should I wait for him to release his course on KZbin? David, does your course cover v1.1 on Udemy with a similar teaching technique to this? I agree, I learn much better by seeing real life scenarios and not following presentation slides. Thanks!

[@chuckcrizer]

Wait what? How does a port stay UP when it is receiving no light? Once down, it ain't sending anything.

[@anthonym.4356]

merci

[@-MadeinJapan]

Much better

[@TheNightshadeian]

Do you recommend setting loop guard global on all switches then?

[@floridastefy2432]

My dream is to become a cyber security professional but I don't have any money to buy course online so I will please like to ask you can you give me a series of KZbin video both on your channel and any other where I can learn everything I need to know about ethical hacking and cyber security from a beginner aspect to mastery please where I can learn about the theory and the practical concept please Dav please that's my worry

[@kamas74able]

how you control all computers on one screen?

[@asamoahfrimpongkwame]

can you share the PDFs for the course

[@floridastefy2432]

But please I have a problem please I need your help I'm a Third year student at university studying Computer Engineering but our school doesn't teach us what I need

[@godbks]

Great video, but I don’t understand why the CCNA content started off strong and then quickly jumped into advanced topics. Most creators usually begin with basics like networking devices, then move on to IP addressing and gradually progress to intermediate topics before tackling the advanced material. I was really enjoying it at first, but I got lost once it shifted to more advanced concepts too soon.

[@floridastefy2432]

Hey Dave please can you please answer me please

[@PLAYERUNKNOWNBATTLEGROUND]

Sir I emailed you, but didn't get any reply, it's something urgent sir

[@syed_wahid]

😊

[@Muddasir-h6h]

sir i think your doing joking , I waiting for you after 12 days because you uploaded a video in which talked about this free course but I can not see any video related CCNA ... so kindly plz stop fake video promise

[@DearGod-e2f]

Stop being a clown and be appreciative. He’s not compelled to do what’s he’s doing.

[@Muddasir-h6h]

@@DearGod-e2f did you know one months gone but but still there is no video of CCNA ...I am waiting for weeks for course...what I do...