MicroNugget: VLANs Explained | CBT Nuggets

In this video, CBT Nuggets trainer Keith Barker explains VLANs. Follow along to learn what a virtual local area network (VLAN) is, why we use them, and how to configure one. See first-hand how to create a VLAN and assign ports and IP addresses to it.

Imagine two offices separated by thousands of miles. In one office, you have computers and networks, printers and devices. In the other office is another high-speed connectivity network with PCs, printers, and servers.

LANs are defined by high-speed connectivity with geographically close devices. Those two offices and separate networks could be brought together by purchasing a Wide Area Network connection.

But maybe you have devices in the same geographic area but you want them on separate networks. Putting them all on the same switch effectively keeps them on the same network.

A virtual LAN lets you assign a certain number of ports on your switch and assign them to a specific VLAN. Anyone connected to those ports will be treated like they’re on a separate network.

It’s called a virtual LAN because we have one physical switch, but we’re carving it into different chunks. It’s a matter of keeping traffic logically separated.

See how to manually configure a switch to generate a VLAN, and how to assign ports and IP addresses properly.

0:15: Defining Virtual Local Area Network
1:00: When would you want to use a VLAN
3:55: Benefits of using a VLAN
4:45: The steps to creating a VLAN
5:10: Manually configuring a 3560 switch with a VLAN
6:20: Ensuring devices have compatible IP addresses

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[KeithBarker]

Thanks for the kind words.

Best wishes,

Keith

[jamiehatch]

I've watched alot of demonstration videos but this is the first i've commented on. I just wanted to say this is hands down the best and easiest to understand tutorial i have ever watched on the topic of VLANS. Thank you!

[wwolfram]

Love the sound effects specifically at 5:05 !

[JakeMcCredieEire]

Thank you so much for this video, it takes my Network teacher an hour to explain this, and you explained it in 8 and a half minutes. Thank you ;)

[jh]

This the first video that I finally grasped VLAN.

[chillwithmikeofficial]

Wonderful video, Keith. Informative and well structured. Thanks a million.

[KeithBarker]

Thanks for the kind feedback. It is appreciated.

Best wishes,

Keith

[sushmar]

Have been binge-watching CBT nuggets. You made it so simple to understand while still covering all the aspects. Thank you!

[akki]

Best video by CBT nuggets, , Thanks you very much Keith...u r a Gem of a person

[jackieee]

Best explanation of VLAN by far. Great video!

[KeithBarker]

If VLAN200 clients need dhcp, and the dhcp server is in VLAN100, then we will need to use a DHCP relay agent, connected to VLAN200 to forward the requests to the DHCP server.

Keith

[bharatpahalwani]

Thanks a ton, you made it too simple to learn, yet covered all aspects :)

[KeithBarker]

Thanks you for the feedback!

Glad you enjoyed the video.

Best wishes,

Keith Barker

[bertaldihno]

What a brilliant explanation. Thank you Keith

[KeithBarker]

Great question.

A layer 3 switch, also often referred to as a Multi-layer switch (MLS) can do the logical routing between VLANs, and in that case the switch is doubling as both a switch and router. You are right on the money.

[benv]

Finally, an explanation I could understand, thank you!

[hariravindranath]

thank you Keith.. really appreciate for taking time to reply..

[jasontran]

Thanks for the informative video. I appreciate the time and effort you have put into this. Keep up the great work.

[KeithBarker]

Thanks for the note! Glad you liked it.

Keith

[avgar]

Extremely well made videos, informative and illustrative, well done!