VLANs: How to Protect Your Wifi and LAN

Dave explains VLANS and how they can be used to enhance the performance and security of even a simple home WiFi setup.

[What_s_Neu]

The different colors in a pipe is the best analogy I've heard for vlans!

[s]

I’d tell you a joke about udp, but I’m afraid you may not get it.

[jholloway]

I use a VLAN to block my mother in law from going on Facebook. Makes conversations with her less crazy

[nickvoncloft]

I'm studying for my CCNA 200-301 I understood every word you

[killbot]

DAVE, I have been in IT for a while and have done a lot of networking, but your Pipe description is the best metaphor I've heard for this thus far. Thank you!

[CarmineIannace]

Excellent, straightforward introduction to VLANs. You knocked it out of the park!

[iamvinku]

This is a fantastic explanation of VLANs for networking newbies like me. Thank you Dave for making this video and including an example of configuring VLANs in Unifi hardware.

[MrUglyDave]

One of the best explanations of VLANs I have come across. Your analogy with the different coloured sub-pipes works great :)

[FarmerRiddick]

Dave, I do appreciate how you just 'lay it out there' so simply for all of us! Things don't seem so intimidating the in style in which you teach.
From a user +,
Thank You!

[johnp]

Great explanation! That pipe-in-a pipe concept gave me the needed understanding of what VLANs are.

[randyl]

It can be difficult to find a person with deep background in these more esoteric topics, really appreciate the clarity of the presentation.

[joeydebra]

The most technical explanation of VLAN's is the segmentation of broadcast domains. Each MAC address table entry also has a VLAN property constraining local and broadcast traffic within itself. By using segmentation you force traffic to a router, switched virtual interface or firewall where you can define policy for traffic between VLAN's.
However this is important: a broadcast storm on 1 VLAN WILL bring your entire local network down even if that traffic belongs to another VLAN on the same switched network. Only traffic living on another physical interface on an upstream router or firewall will not be affected since the broadcasts only are on 1 physical interface.
The reason why switch CPU's spike in a broadcast storm is because they have to continually rewrite the mac table because source MAC addresses keep jumping between ports. And writing to the CAM memory has to be done by the CPU.

[rainmant]

OUTSTANDING!! So many people I work with don't understand them, and confuse Vlan's with a ip segment!! Your water example is great, and I plan to share your video with others.

Thank you very much!

[nickclarkuk]

Thank you, I was looking for info about VLANS a few months ago . This is much clearer than anything I previously found .

[stewartdahamman]

Dave - please do more of these type of videos as this was really useful

[kevinoneill]

Thank you, Dave. Always enjoy learning from you.

[gadfly]

Great video! Small nitpick at 6:30. In Ethernet frames, destination MAC address comes before source MAC address (opposite the ordering of addresses and ports in IP and TCP/UDP headers).

[dontmakemelaugh]

Thank You Dave for that whole detailed presentation!

[otherganymede]

the most straight to the point vlan video i've ever watched, thank you

[bdeva]

This video was awesome, please make more videos like this with the detailed break down of the topic. I'm going to share this video with friends.