Subnets vs VLANs
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- Опубликовано: 15 авг 2022
- ► VLAN switch I purchased ► amzn.to/3pkH9Sn (Amazon affiliate)
What is the difference between subnets and VLANs? Both of these are used to separate or break down a network into smaller networks. Subnets separate networks physically, while VLANs separate networks virtually.
VLAN switch I purchased amzn.to/3pkH9Sn (Amazon affiliate)
Try to explain interlaced vs progressive
May I know what u use to create translation for dozens of languages automatically?
If 2 PCs are connected to one switch with different VLANs and same subnet... will they communicate?
@@abdulali899 maybe don't
@@abdulali899 of course not
As a network engineer I can say: yep, that's how it works at a high level.
Most blogs/courses/videos/etc. go really far into how subnets and VLANs work and often talk about packet tagging, subnet masks, etc., and forget to just give a high level overview of what the stuff does. These videos are short, concise, and accurate. I recommend them a lot to people looking to learn this stuff for the first time as it helps to know what the technology does before you get lost in the weeds on making it work. ;)
true true
I strongly agree with this comment.
Yup, even though I've been in software for 30 years I'm just now learning networking for the first time (because of a new job) and these videos have been great for a good, clear intro/intermediate level of learning without right away going super deep. Love it!
@@brianlandis3057 that's pretty cool to hear, what made you wanna leave software though. Most people I knew, just after so many years moves professional job to something a bit less stressful like yeah networking or even db or sys admin sometimes and still work on software on their part time, keeping up with the cool shit
What if you have a vlan and subnet at the same time? Like vlan10 is subnet 10.100.10.0/24 and vlan20 is 10.100.20.0/24, would that negate the benefits of having vlans as packet will still go through the router?
Believe it or not but I was wondering what is the actual difference between Subnets vs VLANs and your video comes in exactly right moment!
SAME LMAO, today i searched on it on Google, but just didn't feel like reading. All the sudden I see this video recently uploaded.
Me too!
LUCK 1000
I really searched for it yesterday
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Sir, you are a blessing to everyone who want to upgrade or refresh their IT skills. You break complex topics in such a simple explanation and graphical representation. Thank you 😌
Being honest, this is the only video which I was looking for from last 3-4 years. You described everything in easy way. Thanks and expecting a video on Basic Network Concepts.
As a 30 year networking veteran I both love and cringe the simplicity of your videos. They are accurate but necessarily incomplete in the information they portray (which you state directly at the end of this particular video). I am extremely passionate about this field and hope that your videos inspire people to go deeper down the rabbit hole and learn how PCs, networks, firewalls, etc. work rather than treating them like a "magic black box" .
I admire your talent both in simplifying topics that would otherwise be very daunting to beginners as well as doing fantastic easy to follow animations.
/salute
Yeah, these videos are good but I'm still struggling to understand pretty much anything network related. I've been involved with computing for 45 years. I've been in software development for 25 years but anything network related and I'm stumped. It's pretty much still black box stuff. Personally, I hate network stuff but it's becoming a necessity in my field of work.
@@toby9999 woah really? I mean, how can someone be in the software development for 25 years and not know network related stuff? Not trying to offend you or anything but genuinely curious. What do you develop, if I may ask?
@@yennbanks5866 While you are correct that I enjoy this content for refreshes of the basics, I'm sorry that you consider my comment snide and insulting. I assure you that the OP does not.
I was trying to highlight the talent he has in simplifying topics for the masses or for people considering entering the field while acknowledging the necessity of leaving things out that are too advanced. I am confident that Powercert could make far more in-depth videos but that's not the target audience.
Try watching one of the "5 ways" videos and you'll understand my meaning.
@@Mister6 link for that or exact search keywords?
These videos are great for someone like me who has done the CCNA and just want a quick refresher. Might go and lab this is packet tracer
I looked and looked for videos on RUclips and never have I run into a channel that explains IT this well while keeping me entertained. I keep rewatching the clips and I'm not even studying for the CompTIA exams lol.. very well broken down explanations!
The guy explaining these videos is a genius - no one has made IT more understandable to me than this legend. Thank you man!
I truly appreciate the time and commitment you've put into creating these videos! They've been incredibly valuable in propelling my career forward in the field of I.T. Much appreciated!
I've done a couple courses studying for Network+ and watching your videos in 1.5 speed is the BEST refresher of knowledge. Very thankful you made this content for us!
I can’t find words to thank you enough, sir. We all really appreciated and acknowledged your great effort to make learning these important things easier.
You are most welcome
You really make such beautiful videos. The world needs more people that can explain with videos like you do.
Mate, your explanination is so systematic, so simple to follow. I am pretty certain a person with zero knowledge in the subject can understand and would be hooked to your explaination style. The best there is, hands down.
As you said, you can only learn so much from one video....this just scratched the surface but touched on the major points. Another fide video Mr. PowerCert!!!
I'm literally in the middle of studying subnet masking for my CCNA 200-301 right now. This little extra clarification of the two could not have been at a better time. Thank you so much!
Please I desire obtaining the CCNA certifications, can you please guide me through the learning resources needed to acquire and the exam modalities?
@@ogunsadebenjaminadeiyin2729 ,a great resource is here on RUclips. The page is "Jeremy's IT lab".
There's about 120 videos specifically for the CCNA 200-301. He also includes flashcards to practice and labs to get a little Hands-On in the form of a simulation.
It is not easy but is definitely a very thorough source of material. He also recommends trying Bosons practice tests. Which I've seen many people reference the quality of the practice tests. Personally, I have yet to make it to that point. But when that time comes I am definitely going to. It does cost money for boson but everything else I mentioned is free.
That's the fortune in your studies!
@@ianwall3620how did the CCNA exam go?
I definitely recommend this channel to everyone I know who wants to learn networking. It's easy to understand, visually we can see each topic. Thank you so much sir.
Your videos are absolutely incredible. I didn’t find anyone explained it along with amazing graphics like you did. Thank you for such a great experience. Make more videos please
Your animations make technical concepts much easier to understand.
You'd still normally have different subnets for each VLAN. All a VLAN does is logically separate a network, instead of physically. This also gives flexibility in that switch ports can be assigned to specific VLANs. This means someone from sales and someone from IT could be connected to the same switch, but be on different VLANs and subnets. Another use for VLANs is with multiple SSIDs on an access point. For example, here I have a guest WiFi on the same AP as the main network and use a VLAN to carry the guest users over the exact same wire as the main network users. The router then provides a different subnet for the guests and routes them to the Internet.
BTW, I have a Cisco managed switch here.
AGREE
Do I need a switch for Ethernet devices if my wireless ap has ports? Can I make Ethernet vlans on an ap without a switch or do I need the switch to make vlan?
@@robyee3325 If your AP is a router that just being used as an AP, then it likely has a 4 port switch built in. However, if it is, then it likely doesn't support VLANs. You can get by without a managed switch, if your router supports VLANs, as mine does. I run pfSense on a mini PC and have a VLAN configured with it. While it's a good idea to also have a managed switch to keep the VLAN separate from the main LAN, it's not necessary, as an unmangaged switch will likely pass the VLAN frames. On my network, I do have a managed switch, which is configured to pass the VLAN only on the ports connected to my router and to my AP. The VLAN is not available on any other port.
@@James_Knott thanks for replying!
What about SSID on routers
This is what I actually searching for the past fewdays. You made it at the right time. And provided a dowm to earth explanation. Thank you sir.
I'm a field tech that runs troubles and these videos are a blessing. If I run across something odd I go to this channel to understand what just happened. Only complaint....there aren't MORE videos! ha
Once again, you have taught me something that I was cloudy on. I pray for your continued success.
Amazing Videos, you make learning much more easy and effective. I can tell your videos take a lot of time to make and the level of detailing you put in video is mind-blowing.
Did anyone notice when the the cables connected to switch & after he said configure the ports. The lights started blinking meaning data is moving.
Love it!
Hey. I just want to thank you for all these nitty gritty information you have given us... You are doing a great job. Thank you.
Thank you for making this kind of video. I find it much easier to understand especially when I have no networking background. Your videos are helping me a lot to prepare for the network+ certification.
This guy is a savior. Thank you sir for every thing. And if you do a video about subnetting again i would appriciate it.
This is amazing! Thank you for putting so much effort and work into these QUALITY videos. Please keep making more you make learning technology not only easier but fun!
I have been studying for over a year and your channel has helped me alot with my A+ and NET+. my current objective is the CCNA. I was wondering if you could do a video on Spanning Tree Protocol. It would be helpful for me and many others! cheers!
Please I desire obtaining the A+, Network+ and Security+ certifications, can you please guide me through the learning resources needed to acquire and the exam modalities?
Best timing... I'm studying for my ccna. I watch some videos on subnetting and vlans but this this video info that I didn't get from other videos... Thanks so much.
Thanks. Currently studying a diploma of IT specialising in networking and cloud architecture in Australia. Always found the concept of VLANS confusing but this video and your previous video on VLANS from years ago cleared up so many misconceptions. Keep em up! Your doing a great job teaching the next IT generation
Your videos are amazing. Complex concepts you are explaining in easy ways so that everyone can understand. Hats off.
Yes, this is correct, but one unfortunate point that was left out is that subnets are not just physical and defined at routers in a complex network - especially in this age of Software Defined Networking (SDN). Subnets can be virtualized just like VLANs (and this has been the case for quite some time now) on a single router and/or layer 3 switch at a single port such that your VLANs and subnets can all be on the same network port at the router - plug a single switch (configured with multiple VLANs) into that singular router (with virtualized subnet interfaces on that one router port) and you now have a logical separation at layer 2 (VLAN) and layer 3 (subnet). As an example: RouterA has two ports/interfaces - Eth0 (connected to the ISP as the path to the Internet) and Eth1 (connected to the switch, port 1). SwitchA has 24 interfaces/ports with port 1 connected to Eth1 of RouterA, which is configured as a VLAN trunk port (meaning ALL VLANs configured on the switch are allowed in/out of that port). RouterA Eth1 is configured with virtual sub-interfaces 1.1, 1.2, and 1.3 for VLAN1, VLAN2, and VLAN3 respectively and those sub interfaces are configured with subnets of 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24 respectively. SwitchA has ports 2 - 4 in VLAN1, 5 - 8 in VLAN2, and 9 - 12 in VLAN3, and again port 1 as a trunk port connected to Eth1 on RouterA. RouterA also acts as a DHCP server for each subnet and as the firewall & router to the Internet connection. When a computing device is connected to port 2 on SwitchA, the switch will send the devices DHCP request frames (layer 2 info) to the router as a broadcast to sub-interface 1.1 (VLAN1) and the router will send out an IP address within 192.168.1.x and no other device on any of the switch ports outside of ports 2-4 will be able to "see" that info. Essentially, network boundaries (security, segmentation of info/broadcasts/etc.) can be created on singular interfaces of routers and layer 3 switches and tied into layer2 devices to simplify the hardware requirements on a network nowadays, and with computer virtualization the rabbit hole gets much deeper, but yeah, this video is a basic representation of subnets and VLANs and a pretty good visual representation (the switch segmentation especially). Keep up the good work, but don't leave out the nuances (perhaps create other deeper videos).Consider even the fact that vendor implementations of the standards are so varied that from one hardware platform to another there are differences that can make the concepts confusing and challenging to implement - take Cisco vs. Sonicwall vs. Netgear vs. Ubiquiti vs. VMWare as an example - all very different to implement, but following the standards to achieve similar results on a network, and as a new standard is released, such as SDN, they all typically follow suit and release the standard on their hardware as a firmware/software upgrade to keep up with current network and computing trends (the never ending nature of "progress"!). Nice work overall!
That's what immediately struck me - we have *many* subnets moving over the same physical media, and VLANs in the mix as well.
I got confused by this video on the point about VLANs separating networks logically and then finding out that the VLAN switch has its own physical hardware.
So basically, a VLAN could span across multiple Subnets, and vice versa??
@@ude3333 No. A physical port can contain multiple VLANs and subnets, as virtual interfaces, or software defined boundaries. It a router is present in the topology, and used as the default gateway by access-level devices such as a computer, then the router will route between the subnets and VLANs using interVLAN routing. Think of it like a highway with multiple lanes - a 4-lane highway as an example... one lane could be VLAN101 with a subnet of 192.168.101.x, the second lane could be VLAN102 with subnet 192.168.102.x, lane 3 is VLAN103 with subnet 192.168.103.x, and lane 4 is VLAN104 with subnet 192.168.104.x.
The router can route between the subnets (unless it has access lists or firewall rules that block the subnet traffic). Don't think of it as a "span", but more a boundary or division of the traffic and physical "space" like a highway with lanes. The "lanes" can only be accessed or crossed if the switch or router are configured properly to switch or route the traffic across the boundaries.
@@seanzigmund858 thank you. Are Vlans and Subnets necessarily related?
Thank you for the refresher! I’m doing this at work this week and it helped remind me of the differences.
Thank you for this! Never really understood this fully. Keep up the high quality videos my guy!
Another excellent video. By far the best collection of introduction videos to any/all network related matters
Way back around 1990 I was in a training class and I recall a statement being made that stuck with me. Switch when you can, route when you have to. Although much has changed in those 33 years it is probably still a good rule of thumb.
Thank you for explaining things so clearly. I’m a week away from my A+ core 1 exam and you’ve been a huge help.
How did it go
Thanks for the Video, explained very well.
wonderful! Thank you so much. We're waiting for a lesson on how the SSL protocol and web certificates work. That will be so cool.
Something that never gets mentioned when instructors/books introduce VLANs vs Subnets is that each VLAN MUST have its own subnet as well
i.e. VLAN 2 can have 192.168.2.0/24, and VLAN 3 can have 192.168.3.0/24. VLAN 2 CANNOT share a subnet with VLAN 3 (and in fact, if you attempt to do so, Cisco switches at least will forbid you from even attempting the configuration)
My 2 cents and a very important feature that never gets explained - I had to learn this through years of labbing and working with equipment hands-on
That makes total sense, and answered the sort of vague confusionI had regarding segmenting the network virtually without having a physical subnet separation.
You can totally use the same subnet in multiple VLANs if the switch is layer 2 only.
@@celebraces2 I would have to see it to believe it. I've tried on Cisco and Ubiquti devices and they have not worked. I haven't found a video or documentation of it either. Would be interested to see a proof of concept
@@itcertdoctor Thats because you're adding layer 3 to the vlan. What @celebraces2 left out is that you wont be able to route traffic between those two segments with the same IP. If you just do a
conf t
vlan 10 (this creates the vlan in the database)
int range gi 1/0/1 - 10 (selects a range of ports to configure)
sw mode acc (puts switch port int access mode vs. trunk mode)
sw acc vlan 10 (assigns this switchport to vlan 10)
exit
exit
copy run start
If you repeat this for vlan 20.. and then have a dhcp server on each of those vlans, you can have both vlans using the same address space.. you just can't route between them.. or to them or you might have some seriously funky issues. It's not super functional, but on a technical level it does work..
You set up IP addresses on a router, usually in a hub & spoke configuration. You usually set up switchports (in trunk or access modes) on a L2 switch (without IPs).VLANs are used to isolate your LAN hosts and assign to groups, according to your security needs. L3 switches that use IPs have specific uses. Subnets are used to assign IPs to those hosts per VLAN, so they can communicate with the WAN/LAN.
One disadvantage with vlans in a large enterprise is that if it the hardware fails ( the switch ) all the network will fail. This is the only video I watch from you so I don't know if you already did but it will be interesting to make another video with the pros and cons.
The bit you missed is the ability to have one IT user sitting in the sales department with the VLAN option. In the real world there is not just one switch (or one per location) - there are many. And so you can tag a port for a department in a different location if it is set up correctly. That is the most likely scenario for using a VLAN in a large deployment.
thank you for providing a great way to learn these things! you are a gem in this community.
Thank you so much for all the videos you have posted! They are super clear, the animations are really helpful. I feel that I am finally starting to grasp the basics of networking. Thank you!!
You're providing very fruitful information for us in a funny and understandable way ! Many thanks 🙏
Nice. This really cleared things up. Out network guy recently created a vlan at my local church. We recently acquired some NDI cameras for our live broadcasts. I recommended a "separate network" (because security, bandwidth and potentially multicasting). He said "no problem. I'll set up a v-lan." So now i know (Roughly) what is going on.
Kinda sounds like your "network guy" knows more than you and really doesn't need any recommendations.
i am lucky to find your channel. Studying exam for CCNA. and your videos helping me to understand how things work in networking. ❤️ thank you
Glad to hear that
this 6mins video beats my 2hours lecture. thank you
Love the Graphics, and animations, it really helps me visualize equipment and connections practically. So much better than watching a man giving lecture or reading on a PPT.
Absolutely fantastic explanation! Thank you from the bottom of my heart.
Thank you SO much! I am a very visual learner, compared to just reading a book, so this was huge, as I previously had trouble grasping the concept of a VLAN. I thought somehow the entire switch was virtual, not just the networks. Silly me.
Greating from Syria 🇸🇾❤️
Best channel for explaining cs Field
Wow 1.9k views in 1 hour! Congratulations on making such clear informative videos.
Love your explanation
Sir just want to leave a thank you for what you did, really appreciated it! :)
I think it is important to point out that vlans allow you to assign interfaces virtually to different subnets within the same switch. I find it a bit confusing to describe them as doing the same thing. Vlans have one job, essentially to give you separation using software in which was previously only achieved using hardware routers for physical separation. Multiple subnets are utilized in either case and is an extensive topic of its own.
Sir, I learn something that is relatable to in real world in every video i watch... thank you
Howdy.
VLAN had bugged me for some time. Crystal clear now. You are a wizard to deliver the big picture of stuff.
Regards.
This man is an invaluable resource.
Hi, I am from India and almost watched each and every videos you published on this channel. No doubt, each video you published is highly informative and to the point.
I can't resist myself to appreciate you, your efforts and the way you deliver complex things into much smaller, to the point and digestible form for easy to grasping.
This is truly appreciable. Even in my view you are far better than many high degree holding masters, professors, and professionals in this field.
However, I would be more than happy if you try to make videos on -
1. OSI Layers and their significance.
2. Similarity and dissimilarity between OSI and TCP/IP model.
3. About various protocols.
4. Network troubleshooting guide.
Thank you very much in advance if you work on my above request.
Love ❣️ from INDIA.
Great video as usual! Thanks immensely 🙏🏽
Your videos are 110% better than my tutor
Keep up the great work Sir...
I learnt a lot from your videos. Thank You ❤️
Thanks for explaining the differences between the two.👍
such a well done Videos and explanation easy to follow and clear. Thank You from Australia
normally I don't comment on anything I watch on youtube, but you deserve my respect and my like. congratulations! your videos are very good.
I appreciate that!
Great Video as always !!! Thank you man !! ❤
You're the best at explaining technology!!!
You make it very easy and interesting to understand! TY!
Perfect. Thank you.
thanks you very much for the awesome lesson! you are a very amazing teacher!
I always learn so much from your video's.
Great Video as always Sir, thank you kindly 😊
Awesome video, such clarity. Thanks a lot sir for making it easy for us!!
Can't wait for the next network+ course
Here you are back .. Great back ever.
Exactly what I needed just now.
Thank you for another quality video. 💯✌🏼
Already knew this, but videos are just very nice to watch great content
What animation app/web do you use for your videos. Awesome job.
As always, great video!
Great effort. Thank you so much ❤️🙏
Really informative and concise video 👍
this finally puts it in a way that makes sense to me. ty
I love how you explained this
Never stop being this awesome
Man, I love your videos
Thank you so much for sharing Much appreciated
Good video.
Was waiting for your videos sir nicely explained . Need more videos on networking basics concept
You can also specify devices that work accross more than one VLAN (eg Domain Servers, DNS servers)
I use this for studying for my IT course and I always do well. Powercert is great at explaining fundamental IT concepts.
Great explanation, thanks bro
what a illustrative explanation... thanks!!! ;-)
Great stuff explained in simple words
ill also make it simple and short: You are a blessing .Kudos
Thank you for this guide
Fantastic video! Good job!
- both used to break down a network into smaller segments
- to add security, increase performance
thx, awesome video explanation!