@sbrave 110.8.0.0 is the network or subnet that the host 110.8.67.101 belongs in. The goal is to find the network/subnet that the host belongs to... To really understand the whole process I recommend that you watch the playlist of videos that I made for the CCNA at youtube/danscourses You need to understand that the computer sees the addresses in binary and that the router finds the network by ANDing the host address and the subnet mask together in binary. It helps to see it in binary...
It is the core of explanation, it is really good. if you have a problem with this video you have to check prerequisites like bit position,magic number , subnet Mast in decimal chart Good think is it so short way to find. other way is killing time. in the real world or in the exam you have no time to do, you must find as fast as way you can do it.
.please say how did ya get the last network, and why did you not work on 8, i thought it's 110.2.0.0 and 110.0.0.0 as ;ast and first, some informations are missing
and continuing your answer to sbrave, we didn't stop at 110.10.0.0, but since it's the sub of interest to us to find the broadcast and last host of 11.8.0.0, he didn't need to go any further defining all the subs. In this scenario we have a total of 128 subs.
Can you please answer this question- I thought I had the magic number concept down however I thought the magic number indicated the number of hosts per subnet- you show it as defining the subnets. Also- why is the 5th network the first usable network?? Im used to class C networks. Thank you
Great video and I get subnetting up to a point. Do you or anyone here have a suggestion on figuring out subnetting with a Class A or B address with a /25 to /30 mask? I am struggling with this one on finding the valid hosts and broadcasts. Any help would be appreciated. Thank You!
Because you disregard the network octets. They are unchanging. Only the host octets are changed for the subnet mask. I find it easier to use the all ones from the /# then it is simple to do what he does.
I still don't get how you're defining these addresses? How can you start with a lower number than what you had? ex, you started with 110.8.67.101 After the magic number thing, you're going lower to 110.8.0.0 Also how do you know to stop at 110.10.0.0? What defines that range from 110.0-110.10?
Hey dan amazing vids, do you have any other vids for other technologies even if ther are beside networking !! Please keep up the amazing work you're doing for all the students !!
So in this example, you are getting 120000 private ip addresses right? Do you pay for a whole class A or just the ones you have subnetted. Im confused because in a project im doing, we need 120000 private ip adresses but are confused about how we would pay for that. We dont want to purchase a class A address and waste all the other ip addresses so can someone explain how this works, im sure we're missing something.
This is a really helpful video but there are some areas that aren't explained well. Specifically the part where it just states that the beginning network is 10.0.0.0. If you don't already know why then its hard for someone to understand where that comes from. It might be helpful to explain that part a little better.
if i understand correctly, then, if the interesting octet was , oh say, 252, then the network's would be increased in numbers of 4, is that correct?? and the next network would be 110.12.X.X and the broadcast = 110.12.255.255 first would still = 110.8.0.1 but last would = 110.12.255.254??
This question come in one range class of ip and subnetmask. The IP is class A and the /cidr is in class A also, but how do you reverse that if let say the IP is class A range of 126.125.2.3 and the /cidr is /17 or /25 ?
One day it just comes to you (hopefully) and then you can do this in your head. The mask is the key. And if you memorize the place holder values. You have it made.
The reason is because in a real life scenario you may have an IP address that you need to know the network its a part of and or the original network that was subnetted. In this case you have an IP on the 5th subnet and to find the rest of the networks you would have to use the magic number and work backwards to find the other subnets and the original network subnetted. He doesnt explain that part at all in the video. It was one of the only things i noticed that needed an explanation. He just says the beginning network is 10.0.0.0 but doesnt say how he got it.
+birdsong -- @ 2:40 he mentions '2' is the Magic Number and what that means. And since we're in the 2nd octet, we know that the numbers will start at zero and increment by 2's: 0, 2, 4, 8, 10, and so on. Octets-3 and -4 begin as zeroes, which is why the 1st Network is 110.0.0.0 and the 2nd network is 110.2.0.0, followed by 110.4.0.0, 110.6.0.0, 110.8.0.0, 110.10.0.0 and so on. Once you list the first 6 networks you can easily see where our starting IP fits in.
This is what you'll get on a real Cisco exam. They will throw you a random IP with a mask so you can calculate the first/last usable IP and which subnet it belongs.
sry but you did use a confusing octal being both places are 2's so it's hard to say if 252 would advance 3 places or 4 places at a time. sry, i'm dyslexic (with dis-calculus ), it's a-little harder for me. you might be hearing from me again in another CBT. thanks!
The video is great but the title I believe does not corresponds to the subnet class we are working on this example. This is a class B subnet not a Class A.
in the class B subnetting with class C address(previos video from the playlist) you started from 0 when you wrote the first network but why in this one you start from 8 ??
Because the problem listed a network address that had "8" in the octet of interest. You had to figure out in which network the listed IP address for the problem was contained
+Alexander -- He wrote them down @ 2:40 into the video. The 2nd octet's value (with a Magic Number of 2) would be 0, 2, 4, 6, 8, 10, and so on. Once he saw the '8' for Octet-2 he knew he could fill out the questions because he now knew that the given IP belonged to the network: 110.8.0.0
Yes I agree with you he did a great job. I can see where there is a lot of assumed fundamental knowledge of the concepts of binary and a subnet mask so maybe this person is a beginner.
Come on man! Unless you are teaching a class of complete idiots, this video is SO excruciatingly LONG !!! I do not get it? Are you doing this to help people, or by the process of monetization these lengthy videos serve the sole purpose of making some VERY EASY money? The way I see it you are taking advantage of some naive and innocent people. What is YT doing about all this. It has reached epidemic proportions. Shame people! What happened to decency and integrity?
back again after 10 years 🥺🥺
thank you again dan
Thankyou so much! :) I have an exam today and i understood how to do this only after watching your videos :)
@sbrave 110.8.0.0 is the network or subnet that the host 110.8.67.101 belongs in. The goal is to find the network/subnet that the host belongs to... To really understand the whole process I recommend that you watch the playlist of videos that I made for the CCNA at youtube/danscourses You need to understand that the computer sees the addresses in binary and that the router finds the network by ANDing the host address and the subnet mask together in binary. It helps to see it in binary...
It is the core of explanation, it is really good. if you have a problem with this video you have to check prerequisites like bit position,magic number , subnet Mast in decimal chart
Good think is it so short way to find. other way is killing time. in the real world or in the exam you have no time to do, you must find as fast as way you can do it.
Thanks so much. I was little confused finding subnet for class A but this video helped me a lot.
By far the best video I have viewed on subnetting. Thank you!!!!
Finally a good example of subnetting a Class A
Thanks for posting!
your a great teacher, the videos have helped me immensely! thank you.
This video was very informative. Thank you for sharing your knowledge and helping others.
Thanks for this vid! I finally understand the subnetting part. Kudos for the good explanation.
.please say how did ya get the last network, and why did you not work on 8, i thought it's 110.2.0.0 and 110.0.0.0 as ;ast and first, some informations are missing
and continuing your answer to sbrave, we didn't stop at 110.10.0.0, but since it's the sub of interest to us to find the broadcast and last host of 11.8.0.0, he didn't need to go any further defining all the subs. In this scenario we have a total of 128 subs.
Can you please answer this question- I thought I had the magic number concept down however I thought the magic number indicated the number of hosts per subnet- you show it as defining the subnets. Also- why is the 5th network the first usable network?? Im used to class C networks.
Thank you
Great teacher😍
Great video and I get subnetting up to a point. Do you or anyone here have a suggestion on figuring out subnetting with a Class A or B address with a /25 to /30 mask? I am struggling with this one on finding the valid hosts and broadcasts. Any help would be appreciated. Thank You!
Like I said before he has a gift....blessings!!!
nvm my first question, I wasn't done watching your video while asking the question. GREAT VID anyway. 2 thumbs up
@sbrave
Try downloading Advance Subnet calculator. It will also help you realize the pattern better.
thx brother, excellent teaching and very easy to grasp when presented this way. A+++
This video saved us. Thanks.
how many subnets and hosts does the network have?
You explain great!
Thank you very much.
were did you get /15 as subnet mask
That was very helpful. I understood it perfectly! Thanks!
Very useful and easy to understand
Because you disregard the network octets. They are unchanging. Only the host octets are changed for the subnet mask. I find it easier to use the all ones from the /# then it is simple to do what he does.
I still don't get how you're defining these addresses?
How can you start with a lower number than what you had? ex, you started with 110.8.67.101 After the magic number thing, you're going lower to 110.8.0.0
Also how do you know to stop at 110.10.0.0? What defines that range from 110.0-110.10?
Hey dan amazing vids, do you have any other vids for other technologies even if ther are beside networking !!
Please keep up the amazing work you're doing for all the students !!
Thank you very much! from Thailand
Finally... Many thanks
how do you get the range of network with out the /15
great video, thank you so much....from Kosovo
made me easy in subnetting thank you....
if the magical number is placed at the position of 128 then what would we do? whether we have to add 128 as you did the increment of 2
Yes, the first network is 0 then for the next network you add 128.. so the networks are 0 and 128
Thank you #danscourses really appreciate that
So in this example, you are getting 120000 private ip addresses right? Do you pay for a whole class A or just the ones you have subnetted. Im confused because in a project im doing, we need 120000 private ip adresses but are confused about how we would pay for that. We dont want to purchase a class A address and waste all the other ip addresses so can someone explain how this works, im sure we're missing something.
For the same example if the cidr was 24 , then what would be the magic number?
This is a really helpful video but there are some areas that aren't explained well. Specifically the part where it just states that the beginning network is 10.0.0.0. If you don't already know why then its hard for someone to understand where that comes from. It might be helpful to explain that part a little better.
im wondering if whats the significance of the network part thru anding..?
if i understand correctly, then, if the interesting octet was , oh say, 252, then the network's would be increased in numbers of 4, is that correct??
and the next network would be 110.12.X.X and the
broadcast = 110.12.255.255
first would still = 110.8.0.1
but last would = 110.12.255.254??
This question come in one range class of ip and subnetmask. The IP is class A and the /cidr is in class A also, but how do you reverse that if let say the IP is class A range of 126.125.2.3 and the /cidr is /17 or /25 ?
One day it just comes to you (hopefully) and then you can do this in your head. The mask is the key. And if you memorize the place holder values. You have it made.
i love you bro, that's all i can say, I love you
very well sir...Thanks a lot very very easy to sovled questions i can do it
btw, where did you get the magic number 2?
The magic number is the last bit turned on in the subnet. In this example the last bit was in the 2's place
Thanks 😊.
so why would you write your fifth network in instead of 110.2.0.0 or 110.0.0.0 as the starting network?
Yeah that part wasn't exactly clear. He just kind of jumped to that network instead of starting with the 1st one
Anyone explain this? In another video he started with 0, but for this one he started with 8 (second octet).
The reason is because in a real life scenario you may have an IP address that you need to know the network its a part of and or the original network that was subnetted. In this case you have an IP on the 5th subnet and to find the rest of the networks you would have to use the magic number and work backwards to find the other subnets and the original network subnetted. He doesnt explain that part at all in the video. It was one of the only things i noticed that needed an explanation. He just says the beginning network is 10.0.0.0 but doesnt say how he got it.
+birdsong -- @ 2:40 he mentions '2' is the Magic Number and what that means. And since we're in the 2nd octet, we know that the numbers will start at zero and increment by 2's: 0, 2, 4, 8, 10, and so on. Octets-3 and -4 begin as zeroes, which is why the 1st Network is 110.0.0.0 and the 2nd network is 110.2.0.0, followed by 110.4.0.0, 110.6.0.0, 110.8.0.0, 110.10.0.0 and so on. Once you list the first 6 networks you can easily see where our starting IP fits in.
This is what you'll get on a real Cisco exam. They will throw you a random IP with a mask so you can calculate the first/last usable IP and which subnet it belongs.
sry but you did use a confusing octal being both places are 2's so it's hard to say if 252 would advance 3 places or 4 places at a time. sry, i'm dyslexic (with dis-calculus ), it's a-little harder for me. you might be hearing from me again in another CBT. thanks!
can you subnet a network with more than one octet? for example, using 255.255.248 for class A network. if so can you make a video on that?
crystal clear. Thank you very much!
Thank you, sir.
what if we are looking for a specific network, how can you compute that?
class a address (10.0.0.0) I want to calculate ip addresses for this ip range, borrowing 7 bits...
great work so understandable. thanks
The video is great but the title I believe does not corresponds to the subnet class we are working on this example. This is a class B subnet not a Class A.
Are you sure? The first octet is lower than 128, not from 128-191.
in the class B subnetting with class C address(previos video from the playlist) you started from 0 when you wrote the first network but why in this one you start from 8 ??
Because the problem listed a network address that had "8" in the octet of interest. You had to figure out in which network the listed IP address for the problem was contained
+Alexander -- He wrote them down @ 2:40 into the video. The 2nd octet's value (with a Magic Number of 2) would be 0, 2, 4, 6, 8, 10, and so on. Once he saw the '8' for Octet-2 he knew he could fill out the questions because he now knew that the given IP belonged to the network: 110.8.0.0
Thanks sir ❤️
very Helpful Thanks
dan how i can count this process with calculator ? :) thanks
I m watching it after 10 years
Actually the ip address doesnot belong to class b ip . It is a class a ip means 1 network and 2 3 hosts.
brilliant stuff thanks a lot
Is this ipv4?
It is. ivp4 only uses numbers. ipv6 uses numbers, letters, and colons.
thanks so much dear......................
Thanku so much sir ji
awesome!!
10.0.0.0/21 and you have 14 subnets
what is the solution
very helpful
2021 ✌️✌️
thank you so mach
thank u man
❤️
it is not clear
thxx alot
256-2 = 2
who the fuck dislikes these !!!!!!!!!!!!!!
It is not a bad explanation but it not exactly a good explanation. You do a horrible job of explaining how you got the 2
He did a great job. What are you talking about?
Yes I agree with you he did a great job. I can see where there is a lot of assumed fundamental knowledge of the concepts of binary and a subnet mask so maybe this person is a beginner.
Unlike the last video, he got the first octet right. Class A's have to be below 128.
This is so chutya
Did you record this in your mom's basement, with a film projector in the back? ALso, are you aware you start almost every sentence with a loud "So!"
It really doesn't matter, is not about showing eveyone your 4k camera or your alienware computer, it's about sharing knowledge.
your discussion is meaningless
Come on man! Unless you are teaching a class of complete idiots, this video is SO excruciatingly LONG !!! I do not get it? Are you doing this to help people, or by the process of monetization these lengthy videos serve the sole purpose of making some VERY EASY money? The way I see it you are taking advantage of some naive and innocent people. What is YT doing about all this. It has reached epidemic proportions. Shame people! What happened to decency and integrity?