MicroNugget: What is a VLAN?
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- เผยแพร่เมื่อ 13 พ.ค. 2012
- Start learning cybersecurity with CBT Nuggets. courses.cbt.gg/security
In this video, Jeremy Cioara covers VLANs. Having the same IP subnet is fine for a small network, but too many broadcasts can slow down the network and even the devices on it. VLANs solve that problem and can enable a "local" network across an entire campus.
IP subnetting is great for letting networked devices make quick requests to one another and have access to network resources, but too many devices means too many broadcasts - and then the entire network's going to start dragging. Security can also be an issue if you don't have fancy Layer 2 features protecting every device. Hence VLANs - they take a switch or entire network and break it up into multiples by creating broadcast separations as well as security boundaries by effectively "hiding" the devices on a network from one another. Here's a brief explanation of VLAN functionality - even how they use trunk - or tagged - ports to forward traffic to other switches.
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Start learning with CBT Nuggets:
• Intro to Networking | courses.cbt.gg/tuv
• Building a Network Design | courses.cbt.gg/0g9
• Real-World VLAN Design and Implementation | courses.cbt.gg/b8z
• Real-World Cabling and Devices | courses.cbt.gg/tlf
• Building a Business Switched Network | courses.cbt.gg/ho3
Glad you liked the MicroNugget! Thanks for the feedback.
The way you explain and compare things is a major help! Thank you so much for expanding my education in Networking!!!
a VLAN is usually the antagonist who tries to harm the hero of a story..
Welcome Sir! And Thank you For Sharing this wonderful video! I'm currently doing VLAN configuration on Packet tracer assessment right now! 5 mins was a great help!
Right on! Love the video and recommend them to CCNA candidates and more!
Creates broadcast boundaries and security boundaries. Got it! 👍
Thanks for the feedback and the subscribe! We are pleased to help you understand VLANs.
awsome vid, you saved me about 1h reading a boring script our teacher gave us. Im having my final exame in 2 days, thank you sir.
Thank you so much for this video. Reading my study guide's description of this topic did virtually nothing for me, but this did everything. This video explained everything I needed to know
as always, your videos are pretty amazing and VERY simple to understand!! THANK YOU!!!!!!
been looking for ppl to explain vlans etc. best video yet
Brilliant teaching. Thanks for knowledge
I like this one. Watched a couple of videos on this so far and this was the one that explained it best. Very personable too
great video, very detailed. great explanation, thanks!
Great demonstration.
Good Video. Good voice to listen to during learning, keeps you entertained! Great job!
beautifully concise. Thank you
Thanks, good job Jeremy
By far best explaination of vlan, tnx mate.
Thankz dude - that was precise and to the point!
Man! Jeremy you are the next Ilay the computer guy.
you're awesome
Amazing Jeremy!
Wow you're very enthusiastic lol. Good video, this definitely helps me out with my Cisco Networking class. Much appreciated.
Excellent video, thanks a lot.
Thank you for sharing your knowledge ina easy to understand way
Very Helpful!
Of course! Glad you liked this MicroNugget. If you want any topics covered, feel free to leave a MicroNugget suggestion from the link in the description above.
Simple Easy and nice Thank you
Great Video!
Solid video cheers
Thanks Allot sir 👍
OMG! this is nice! it really helps me to understand VLAN, i love how you explain it. I hope I can be a tutor like you someday :)
subscribed!
very informative
You're a beast thank you
thank you
Very useful. thanks :D
If you'd like to request a topic there is a link in the video description. Thanks!
Great Work!!! CBTNuggets............. and Jeremy you are awesome............ I wonder if you are going to finish up CCIP track by recording series for 642-611 MPLS............. I am waiting for it.
Thanks. I really love it.
May Allah reward you.
Thanks
Hey chandio45! Jeremy isn't actually going to do an MPLS series because Cisco is changing the certifications track soon and phasing out MPLS. He will however do a series on the new cert.
amazing
Good video keep up love it brother. Say hi to the kids!
Hi:
will you be doing a video on bandwidth limiting on vlans? thanks:)
wow amazing explanation :D i will subscribe, keep the good work up
That is awesome to hear you enjoyed the tutorial and thanks for subscribing!
I yave a request because I love the way you explain things. Can you male a video on how to config asterisk and cisco 7940/7960. Till they work ?!. Its just request because I have been looking for a tutorial but never succeeded
Ghassan Yousif Thanks for the request. We have forwarded your comments to the correct party for further consideration toward recording a MicroNugget covering this topic.
Thanks Man! This was a really simplified and easy to understand explanation. Really supplemented what I have read in books and provided clear understandings of why one would use a VLAN. Question for you. What layer(s) of the OSI and/or TCP/IP does a VLAN operate on?
Hob Goblin Thanks for the feedback. As for your question, we suggest asking it on our Forum to get other members of the CBT Nuggets community involved: cbt.gg/18a0zf2.
Nice thanks.
Sama 2 sama
assoy
Good video, is there another one from CBT Nuggets explaining how to configure a VLAN?
Blues Overdrive We have many videos discussing VLANs. Check out all of our VLAN tutorials here: cbt.gg/1CMxcNf.
What if the two Vlan's need to talk to each other? Do they have to go the default gateway?
Question! is it possible that 2 different Vlans can ping each other without a router? i got it configured in packet tracer and i cant find out how its possible, am i missing something???
Thank you for the explenation! I´m missing just one bit in your story: What happens with the daisy-chained port? In your drawing you have a phone and a computer on a single port. That means you have two devices with different VLANs on a single port right? What happens then? ( in the video @ 4:25 )
Felyrion Thank you for your question. We are reaching out to Jeremy and will follow up with his answer as soon as possible.
Felyrion, Jeremy's response is "The port on the switch is configured as a limited trunk that supplies multiple VLANs (two) on a single port. The phone ends up on one, the attached PC on another." Hope that helps!
CBT Nuggets Thank you for your further explanation!
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So a VLAN can split up switches into virtual "separate switches" to take on the identity of multiple networks?
+AkeemKN You are correct! A VLAN can split up switches into virtual separate switches to take on the identity of multiple networks.
+CBT Nuggets
Thanks!
? how can the computer take information from another computer? active directory...