Well, welcome back to cyber areas. Create a sudden it today we're gonna go over cider and submitting. I'm your instructor. Trendy arrow gladdened begin.
So you said we're gonna win with cider is And also we're gonna take a look at how to do some basic subject.
Cider is your classless inter domain routing. So what? This helps ISS
when you're somewhat classless Networking, right. Imagine the class full networking means you have your network said your B networks. You see networks meaning if you use a network, you have, you know, two million up you dresses for
that no network, which is, you know, you're probably not waste quite a bit of those I p addresses where, as you know, class see, you only have the ability to put in 254 eyed peas into a network.
So the way this is represented here was with a slash number notation. That number corresponds to the number of network bits and sudden it bits BB and used for that network. Right for that, Suddenly
so, slash 24 is a traditional, classy network being it's using 24 bits for the networking portion. There's eight bits for the host portion.
Right? So that would equate to a sudden that mask up to 55 to 35 to 35 in a Class B network. Thank you. Need you know, 16 bits, So slash 16. Class A is a slash acres. You need eight bids.
Uh, and the way that these were gonna work. You know, if you add up all eight bits in that octet, you're gonna get to 35 right?
You got a mirror that this is not supported in rip routing protocols. Right? So rip is a class full networking routing protocol,
so let's go ahead and move on to a little bit of cider practice. I will give a few seconds deposit and get some No paper and a pen. We'll go ahead and begin.
All right? Hopefully you guys got this done already. That's good. Go ahead and begin Otherwise. So here. We're gonna go ahead and just do 2 35 So what we need to dio is we need to add up our different bits. Right?
So we're gonna imagine this first bit here, so I got 1 28 plus 64 is 1 92
3rd 1 that's gonna be 2 24
Because this is your 32 place, remember?
When the next one gets it to 40 for a 16? Well, at 84 to 1,
So let's go ahead and do to 48.
onto what? That's a 5 to 54 then two. Well, 2 55
So what we need, how many bits are we being used here? So this would be a slash eight
going screen, and we'll move on to the last one, so we know we need so
Eight bits are being used here and eight bits. Are you being used here? So if we go ahead and just begin this with 1 28 we know that only one bit is being here. It used here. So this is gonna be a slash 25
Because I always 000000
So, essentially, this portion here would be your host.
and this is the last octet. You have your sudden that bit.
So the last one, I hope you figured it out. We need 30 different bits.
So I'm gonna go ahead and move, Isn't it decimal? So I know that there's gonna be 2 55 to 55
too fortified to get us to the nearest classical network.
So I'm gonna go ahead and do my little thing that you hear networking bits sudden at best host bets.
So we know that we have 24
which would leave us with six sub nets and to host, right, because these two together would give you your slash 30.
So let's go ahead and put these 67 that bits into a for six on your to host bits. Right?
So essentially, we could just minus three awful of 2 35 because this would be three if you did a one of the one.
So 40 to 55 minus three would leave us with 2 52
So that is the last octet of that, son. That mask.
All right, clear screen. And we will move on here. So subheading, the way that is generally kind of scene is you need thio. It's a determinant based on the host eyepiece that you need, right? So if you have a network that only has 64 devices.
you know you base your somewhat off that you don't need a full class C sub net if you need 64 I p addresses, right.
You actually need a slash 25. Because remember that 64 is being used, but then you need you have to minus two for the usable. See, actually end up with 62 usable I p addresses.
So the quick way I like to determine my son. That mask. Uh well, use this again. So do the slash 28 up here
I do my networking, my sudden obits and my host bits. So this would be
24. This would leave us with four sub nets and four Host that 1234 So 1 28 1 92
So here we're going. You know, we got our quick, sudden that mask So to 35 to 55 to 55 to 40.
And here's how the way that I utilize this last suddenly or this last said not here is so if we did 2 55 minus 2 40
2 56 apologize. That leaves us with 16 right? We know that our block size that we can utilize for I P addresses is 16. We can hold 69 piece per sub net.
So let's go ahead and move into a slash 22. Here, clear the screen off.
So slash 22. It gets a little bit different when you get into the class. Be submitting.
So network suddenly host.
So we're gonna do first class full 16. 16. It leaves us with this and 10 host bits. Right.
So we know that. 123456
or 5678 Right. These are the last to our tests.
So let's go ahead and do the last bit. Maybe we could just minus three. So we know that this is a duck to 52. If you do the math of adding up, these or you could just minus three from that there.
So, you know, whatever, that stupid too.
So we can kind of do that same trick with a Class B networks to fortify or 2 56 minus 2 52
Right. That leaves us with
So how that's gonna work is you can actually look at essentially think of it as we have four class C networks that we can utilize, right?
So I'm just simple 10 1
1.3 to 55. That's our actual eyepiece base that we can utilize for that slash 22. Right?
Because if you think about it, we're essentially using three
different, because then you have your 12 and your three networks, right?
They're using four different classy network. So you can still kind of use that trick. And it would be the same thing if you were to suddenly a class A network. You could you could essentially say you had this many class B submits to utilize.
so you have, you know, 10. 24
i p addresses. Because if you do to 55 by four class sees no,
the other way that you can do that here If you need to determine if you have Ah, this is one way. Actually utilize a calculator. Um,
if you look at this year, you have 10 sudden at best, Anyone who determined real quickly how many
I please you. Have you can do 10 or to raise 2 10 Remember, because you can use those basic. There's a base to system. And that would give you 10. 24 as well. Right?
I guess this would be to 56.
Let's go ahead and clear the screen off here. Let's go down to this bottom portion. Determined subject mass needed for the I. P is needed.
So one thing we can do here
All right, so that is gonna give us 1 90 right? So when you look at what we can utilize off, that's great. You essentially saying that your sudden that mask
essentially below this number, Right?
So if we do the 1st 1 of 1 28
that's below. We can utilize that we can use one sudden. It bit
s o. The next one will be 64 which would equate to 1 92 So that would be about right? We can't utilize that. So then you're so that would be
So essentially saying that the last act Tet are saying to 55 to 45 to 55 that 1 28 or a slash 25. Right, Because you're using that one extra sudden up it.
So again, that would look like Network 24 Sub net one host seven.
All right. Hey, let's move on to 2112.
So let's take a look here. Here's where we're really going to want to utilize some actual calculator math unless you're really good at this stuff.
So let's look at what we're gonna utilize here,
because obviously we can't do our 10 24 trick. Here are the 256 minus the peace space, because we're gonna have to actually tap into the Class B network.
So let's try and figure this out here. The way I like to do it is kind of the lazy way is we know that
10 suddenly bits could just learn is 10 24.
So if we give it one extra so 11 would be
2048. Okay, we don't have enough still so 12
give us 40 96 minus two. Of course.
So we need to use 12
I wish it if we d'oh in order here,
do 16. Because we're gonna use a Class B network for that.
Which means we had to borrow four bids for this. Which means we use four bits for the sudden mask.
So let's go ahead and do 2 55 to 55 because we know that is a Class B network right here.
And then we need to figure out for sudden it's a 1234
1234 There we go. So 1 28
and I'm just gonna go ahead and add these up. 64 32 16. So
to 24 watts, bed to 24 add that last 16 in there.
What gives the 2 40 So here would be our protector. Zero.
And this would be remember, So add these two up, so this would be a slash 20 network.
All right, so we're gonna go ahead and move on to the quiz here. Hopefully you remember. What is the subject mask you need for a network that requires 254 I p addresses?
Give you second deposit
already? Hopefully everyone got
that. You are going to require just a classy network, right? You just need
slash 24 because you need eight bits for 2 54 addresses that will give you a perfect amount. Now, again, that doesn't give you any room for expansion because you're going to utilize every I p address.
But that will work, right?
All right. In today's video, we went over what cider is. And we talked about how to utilize that Byner math to determine our sub net sizes.
Don't thank you for watching today's video, and I look forward to a senior next one,