Great video, very straightforward. Your instructions was easy to follow. I like your use of graphics on the video. You are a great instructor in addition to your IT credentials. Thank you for all the work you put into your videos. Yes, we notice and appreciate it.
You're very welcome! yeah VLSM can be connfusing but it can also be simplified too and applying it to a scenario would make it easier to understand as well
I think there's a mistake about the broadcast address. The broadcast address is normaly the last address of a (sub)network, and not the last -1 like you said. That's why a 30 hosts would'nt fit in a CIDR /27 subnetwork according your video. Uppon this mistake, I found your explanations really good !
Hi! I appreciate your videos, they are super helpful. I’m looking to get into the help desk for role for starters and would be awesome to see a video on common issues you’ve helped user with as an It support! Thanks for the video :)
i have no word to express your method of teaching i tried to know about this concept and now i get all what i wants darlng sis , keep it up and do more you have good talent !!
You're very welcome!!! I'm so happy that I could help. I really tried to make it as simple as possible with just few steps. Thank you and will keep doing videos!!
Thank you alot! In class I didn't understand VLSM at all but your video helped me understand it. I wish you also included subnetmasks but I figured it out eventually. I'm sure to check out your other videos aswell!
You're very welcome!! I really tried to explain in 3 simple steps that is easy to remember. Oh I forgot to include a lot of things like subnet mask and class a and b. I'll try to make another video for that
@@EastCharmer Yes but everything else is easier to figure out when you understood the basics haha. If you decide to make another video I'll be sure to watch it 😄
Take away the amount of device hosts you need from 256. Assuming /24 major network, 30 hosts (remember you need 2 for network and broadcast), 256-32, then the mask is 255.255.255.224. Need 64, you need 2 for network and BC so then the largest subnet you need, which is 128, means 256 -128= 128, so the mask has to be 255.255.255.128. As for working out notation from /24 think how many times do I need to split to get to the subnet size, need 32? 256÷2=128÷2=64÷2=32, I split it 3 times, therefore 24+3=27, so a 224 network is /27 notation.
Hi there let me thank you from the bottom of my heart because your video was so clear so well explained and it's been a while that I was trying to understand this subject of VLSM and it was just difficult but with you, I understand with any efforts it goes by itself And when I think that all these explanations is for free I'm just speechless and thank to you i was able to i see the other video that you made with the other students and it helped me a lot to know what's going on subnetting just infinite thanks I guess that the best i can do is obviously like subscribe and share but also pray for you may God bless you and i wish you a good health many success and a blessed life. Peace and love on you ❤
Hello!! Thank you for the nice comment! I'm really glad that our videos are helping a lot of people. I started making IT videos because when I was starting, there were only a few or almost no resources that are free and accessible for me to learn. So I'm happy that my videos are helping out too. Thank you for subscribing and I hope we can make more content! Goodluck on your career as well and if you're taking exams!
@@EastCharmer let me firstly apologize for the profanities. But I was truly elated. You should do Class B and Class A networks using this method. I had to work it out but trust me…..this made it all make sense in an instant. I thank you again!😁🙏
holy smokes..not only is she SMART and a GREAT teacher..but she is also super DROP DEAD GORGEOUS!! 😍🥰😍 by the way thanks for the Lesson!!!!!! Def a charmer!! LOLL ::))
You are writing 8 in what a wonderful way !!😀 But it's very simple method to teach to students. But I am doubt whether it can be used for every possible VLSM subnetting
oh lol I am used to writing it like that. hhmmm it is actually more practical to use VLSM, maybe not on all networks but for WAN links for example, it's helpful not to waste a bunch of address if you only need 2
Very good explanation, but I think you should have added the subnet masks to it and/or the CIDR notations, as they are very important for this to work. I like your videos 👍
yeah it seems overwhelming in the beginning but once you understand the concept, it is quite simple and practical. Just keep practicing and you'll master it
well it depends on the admin but at work we typically use /32 for network interfaces coz it will only have two hosts. it's more practical than using /24 and waste all 20 ip address for network interfaces
@@Syntaxstic yeah it always depends on the environment you have. we work with developers who constantly needs test VM so we're being practical with our subnetting
Great video on how to create networks of given sizes. And great personality for making videos. I feel like I could listen all day. But if I'm being critical (sorry), why reference classful addressing here? It's use was discontinued over 30 years ago. Am I wrong to say it doesn't have anything in the world to do with creating subnets for an office today? Also, it would probably help to have masks on those networks. Sorry.
Thanks for the feedback. This video was more on the showing the concept on how to apply VLSM on networks. Regardless of the class of the address , the concept and steps should be the same. I made this about 3+ years ago I think and this is more for answering exams coz I think back them subnetting and VLSM are part of Networking exams. And I made this video because people requested for it. I agree that it may not have practical use now.
@@EastCharmer "This video was more on the showing the concept on how to apply VLSM" - it does that very well and that absolutely has a practical use now.
you're welcome! It should be the same method. First we need to determine the number of host bits required to represent 16000 hosts. Then we need to determine the number of bits we should use for subnetting. This is by subtracting the host bits from the total bits of 32. Then last is we can determine the number of subnets and number of hosts from the subnet bits from step 2
Hello there! You're welcome and I'm glad you liked the video. Ok so typically, rule of thumb when designing networks is if you have 7 hosts you should go for the number that is more than the number of hosts and can also accommodate the broadcast address within that network. So if you have 7 hosts and then increment that is more than number of hosts is 8, you should still have to consider the 2 broadcast address that you need to reserve and also being able to accommodate more hosts in the future for scalability. So 16 would be ideal if you have 7 hosts.
@@EastCharmer let me restate what I said, this is by far the BEST video on VLSM. I am just confused at the 13:54 mark and beyond that. I also want to thank you so much for the response.
I guess my really big confusion is after you get done using the block number in the X amount of hosts what do you do then? Like if it makes sense, on the networks , why did you go from .64 to .80 , to 96 and then only use variables of 4? That’s where I am confused if that makes sense. I apologize I’m just REALLY just trying to better understand VLSM
Hey, subnet mask will depend and vary on how you would divide the networks. You would base the subnet mask for each network based on the number of bits being borrowed. For example, for the wan links that only needs 2 hosts, you need to borrow 2 bits and if you would write this in bits it would be 11111111.11111111.11111111.11111100 (the zeroes represents the borrowed bits) . If you count all the bits(ones) in that mask, it will be 30 total hence /30. So for the network that needs 2 hosts, subnet mask would be 255.255.255.252 in decimal form. I know it's not easy to visualize and it's also hard to explain without illustrating it :( but I hope that helps
nice video! the problem with the exam and stupid is that no calculator can be used! i don't know why they go at this level when even maths you can use the calculator in the exam...at work today everyone uses a subnet calculator anyway.
Thanks! Yeah I agree. They should test on how you solve problems and understand the concepts because like you said, in reality, we use calculator at work
@@EastCharmer in fact subnetting the concept can be understand, the problem is doing it mental is not easy, you need to memorize at this point since i hate calculations.
you're very welcome! sorry I should've include the subnet mask too. They will change too and that's depending on the number of hosts like 2 hosts would be /30, 6 hosts /29. /24 is for 254 hosts
Kung lagpas 128 ang hosts pwede pa din xa sa class c kasi it can accommodate up to 254 hosts. Pero pag lampas pa jan pwede class b ang gamitin kasi up to 65,000+ ang hosts na kaya. Yes nangyayari naman na more than 256 hosts especially pah global yung company o yung large enterprises na talaga
Most likely, to be safe, you would probably make all these networks much, much bigger in the first place. She used these examples to illustrate how you would do it in theory. But running out of IPs to assign to your office is unlikely. There are millions of them at your disposal. But if you really need 100 more, just create a bigger network that does not overlap with any existing network you have.
Yes you have to go for 64 and always add 2 for the reserved addresses. Also when designing subnets it's best to think of scalability to make it easier to add more machines to a network when needed
