Time
13 hours 57 minutes
Difficulty
Beginner
CEU/CPE
14

Video Transcription

00:00
Hello and welcome back to I C d one interconnecting Cisco networking devices. Part one This episode 4 to 3. Converting decimal binary
00:08
hydrating Terranova, instructor for this course. In the last video reviewed the classical networks. We went a little miller in depth. This sign of first did
00:16
this absurdly covering how to convert decimal binary. And how do we use it for submitting?
00:24
So again, we're gonna convert our dismal toe binary using her sudden mask,
00:29
we're gonna determine the cider notation from the binary,
00:34
as always. What is the cider notation for the Southern mask?
00:39
2 35 to 45. That 1 92.0 We'll see if you could for this out.
00:45
Um, you can't
00:47
just wait a second,
00:51
all right? It is the slash 18 and I will show you why in just a moment here,
00:59
it's quick review in a binary. Here we have our 32 bit address
01:03
with 4/10 of eight bits.
01:06
This is gonna be actually split between the network subbed and host bits.
01:11
So if we look at 1 92 that 1 68 65 1 to 65. Well, what does it look like? and binary.
01:19
So remember, we have
01:21
when
01:22
1 28
01:23
but 64 is 1 92 So just fill these in with zeros.
01:32
1 68 So 1 28 minus
01:36
1 68 minus 1 28 will leave us 40. So
01:40
won't work. This leaves us eight,
01:44
huh?
01:45
And fill the rest in.
01:48
Ah, one. Nope.
01:51
No, no, no, no, no, no. Yep.
01:55
In 65. Nope. Yes. So now we have one left, so
02:00
and killed in auto one. And there is our i p address,
02:06
so we'll go ahead. And now we're gonna move into converting the
02:10
to converting the subnet mask.
02:14
So that was when we looked at the 2 55 to 55 0.0.
02:20
Um, So here, don't you have your class full masks,
02:23
class a, Class B and classy, respectively.
02:27
Um,
02:30
those are
02:31
think of him as ones and zeros again. One's ears. Um, so you're the ones. Determine your network, and sudden it bits zeros determined your host bits.
02:42
So if we look at 2 35 0 to 0, we are
02:46
What? Her? Excuse me? One.
02:49
All these air filled in because that equals 2 55
02:53
and this is zero across the board
02:55
down here. So here is your slash eight.
03:01
And let's say we want to do the 2 55 here.
03:06
So this is 111
03:08
And this is 111 customer that this equals 2 35
03:14
Then this is zero down here
03:16
and same thing with this SOS to be 16. So same thing with the certified to try to find out. Zero.
03:23
That one will just have ones all the way down here
03:28
to be a slash 24 zeros
03:30
down this way
03:34
to determine the cider notation. We're going to add the network and sub net bits or count the ones in the network I d.
03:40
So let's say we have this.
03:44
I'm just gonna fill in a few of these.
03:51
I was a truck. She depends, Um, anyway, so if you count the
03:55
once 123456789 10 11
04:02
So this would be a slash 11
04:10
o. R. Remember this. So that way would look at sub net network
04:14
host
04:15
gonna be eight
04:17
three
04:20
and
04:23
oh, man, this is rough. 21
04:27
29 2 30 0 okay. Yeah.
04:30
It's like I said I'm not a mass thing. Um
04:34
all right, Someone clear those off. We're gonna do this one here.
04:39
So 11111111
04:44
2 35
04:46
And now we're going to 1 92 So 1 28 plus 64
04:51
and zeros down.
04:55
So this would leave us with a slash 18.
05:00
Um,
05:02
and we'll look at so 2 52
05:05
So I'm just gonna dio one
05:10
one
05:11
and 2 52
05:13
So 1 92 to 24 to 40 to 48
05:18
2 52
05:21
and zeros dough.
05:26
So this be 16 17 18 1920 2122 slash 22 would be the cider notation on that one.
05:34
So you want to go ahead real quick and figure out what 1 92 is? Where did that figure out? What to 24 to 40 would look like.
05:44
So I've written out how many sudden at busy she has, but
05:46
he needs that. You need to practice. Go ahead and write it on binary. Um,
05:50
it is what it actually comes down to when you're doing the practices that we've been doing
05:56
otherwise I'm gonna go ahead and push into the next module. Oh,
06:00
real quick.
06:01
Um, when you see,
06:04
let's say it was Take the
06:06
So let's take this to 41 here.
06:10
This will kind of actually tell you where the last number one is
06:14
or the last binary one. So 16.
06:17
So what? This says Israel. 111 wants to the 16 there.
06:23
Then we go. 0000 So let's count this 1 28 1 92
06:28
to 24 to 40.
06:30
Well, let's try it with 2 24 I guess. Let's see a 10 works.
06:34
Ah, our 2 36 minus
06:38
32.
06:40
So let's plug this one into here.
06:43
1 28 1 92 to 24.
06:46
Yeah, that works out
06:49
quick. Way to you know your binary to just know how many bits is gonna take Eventually, After doing this a lot, you'll you recognized the 1 28 11 92 to 24 to 42 48 etcetera. You'll be able to count in that kind of reverse,
07:06
you know, reverse way there.
07:10
So we move into the
07:12
practice here.
07:15
Let's go ahead and determine the binary for the sub net to 45 to 55 to 48. You don't need to actually write out all the ones for the 2 50 fives. You know that you can just write out
07:26
2 55 to 45 then do the ones and zeros for 2 48 then you guys do zero. Um,
07:33
as long as you understand that all the ones air filled in for 2 35
07:38
that's fine with me.
07:40
So go ahead, pause the video, trying to figure it out.
07:46
All rights to 48. Let's do so. We got 1 28
07:51
1 92 to 24
07:56
2 40
07:58
to 40. Eights
08:01
do so. 345678
08:09
0 to 55
08:11
2 55
08:13
Um,
08:15
bestie. Better equipment. So we think that is a We're borrowing five bits for the suit for
08:22
For that, this is 16
08:26
which would leave the host bits 2011 11. Uh,
08:33
and those bits. So I'm gonna go ahead. What would the sudden that mass be for a slash 23? So we'll do it in reverse way.
08:39
So if you want to positivity on, figured that one out,
08:45
all right
08:46
to slash 23
08:48
so we know it's gonna be too fortified to 55 is slash 16.
08:54
And we need to figure out that third act Ted again.
09:00
So let's go ahead and figure out. So we need to borrow seven host bits or seven network bets. 1234567
09:11
That last one would be this.
09:16
It would be a zero. So figure 1 28
09:18
1 92 to 24 to 40 to 48
09:26
2 52 to 53
09:31
at 2 54
09:33
No
09:35
murder that's not going to
09:39
this one will allow. Um,
09:43
borrowing seven bits like this is in a Class B is fine. You cannot borrow seven Bates in a Class C because, let's say
09:52
so. For it to be fired at 2 30 Fired at 25 to 5
09:58
and you gotta borrow seven beds. So you're at 2 54
10:03
So
10:03
there's only two I p's there.
10:05
All right, so move on to the post assessment here. How many host bits are left after for a slash 28 cider? Give a few seconds.
10:16
All right. Hopefully your brain in the complete mush by now, this one should be simple.
10:22
It's just 30
10:22
uh, 32
10:26
minus 28
10:30
with equal four.
10:31
That's what we got.
10:33
All right, So in the next module, we're gonna go into implementing I before we're actually gonna break out the routers. Now we're gonna be implementing rip a little bit. Um,
10:43
And if you guys are still rusty on that submitting, please use Todd label site to use you to use something to, um, to learn subheading.
10:54
And, as always, if you guys have questions, need help. Feel free to shoot me. Message. Otherwise, thank you for watching this module
11:01
and look forward to teaching the rest of you.

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Trenton Darrow
Network Engineer at NCI Information Systems, Inc
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