Welcome back, everyone. Now we're doing how to summarize the binary way. Okay. summarization is the act of bringing small networks together as one. That's what summarization is. Before.

We're subnetting. We're taking one large network and we're bringing it up into little networks, right? Well, summarization takes all these separate networks and brings them together as one. How, by taking that mask that was a 30 longer mask or a longer prefix and shortening that prefix to include all those networks. That's what summarization is. Well, by manipulating the mask, okay, all right.

So that's what it says there. Well, that's what it is. Okay. That's what summarization is, and it's extremely important. But let's go inside the lab. And let's take a look.

We have these three or these three different segments. Okay, that we're going to summarize their networks. I'll see you inside. Alrighty, here we are in the summarization lab. So this is how we are going to summarize Well, two labs. This is the lab that shows us how to summarize, right?

The whole point is taking these three, all these different networks, really, I'm putting them into one. Okay, so we're going to take these particular networks, we're going to turn the interesting octet, which is the third octet. That's the interesting octave because that's where the changes occur. Okay, I'm going to turn that into binary. And from that, we're going to see how we get a summary address a summary address. Okay?

So let's go ahead and do so. Alright, so we're here in the first one. It's all zeros. Oh, okay. So up here was zero. Okay.

Alrighty. Zero. All right, that's what it was 10000000 and one awesome and then we go to the next one is to go up to seven. All right, so I have to keep looking at 0000002 so that one's on. And then 00 then 300 somewhere on my voice 000011 then 40000001 And then 00 then we go to five, I think is gonna be the hardest part of the whole thing is doing this. But once you get the gist of it, you'll see how quickly you can get you can actually get it done, because all you really need is a first one and the last one.

And that's it 01 you'll see why in a second. We got 6094 on two is on, make six. And then the last one is are they zero except the last three and that would be seven. All right. So what do we do now? Looking from left to right in each particular column.

Okay, we'll look down. In each particular column, we're looking for the on common values, meaning they're not the same. They're not all zeros. They're not all ones. They're a mixture of zeros and ones. And that's where we're going to draw a line because you can see right here that the default line is right here.

So 24, right, 24 bit math is what we're using right now. We're gonna make that mask shorter. All right, shorter. So excited. Alright, so what we're going to do is okay, we say, okay, everything in this particular column, 128, they're all zeros are here in this column. They're all zeros in this column.

They're all zeros in this column. They're all zeros in this column. They're all zeros up, but in this column, they're not always zeros, zeros and ones. So our new magical line is going to be right here. Alright, so let's move everything over. So everything lines up nice and pretty.

Okay? So this is our new line right here, because that's where you stop, because that's where you saw the common bit values. So okay, so remember this is the third octet, the third octet. So what is their server address? Well, we know that 10 dot one Oh, no, no, no. What that just hop in there.

10 Dot one dot What? Okay, well, we need to take a look at this. All these bit values here. Okay, to the left of that line, everything is zeroed out, everything is zeroed out. Everything is zero. So it is the Zero dot zero with a cider.

What? What's my new cider? Well, it's 880 1617 1819 2021 or a new bid value is 21. And I don't know why I did that computer going crazy 21 All right, this is what's known as the summary address. Okay, that is a summary address. So we got it for now, for the simple, pretty simple.

Now when we go to the next chunk of networks, I can you know, write this down, we're going to need these so many addresses in our next in our next lecture. All right, so now we need to do the same thing we did up here. We could do it down here. We have the same default cider 20 We're going to make it a shorter prefix. So these networks can come together as one. All right, so we're going to go, we got 800008 is on 00.

Now, I want to ask you, before we do all these zeros 00 as boring, is there, are we going to need the 16 at any one point? No, you're not. But we will need the eight. In order to make nine. We will need the eight to make 10 we'll need the eight to make 1112 1314 and 15. Correct.

So if you do the last one, that's all I was talking to you about. 0001111 that's 15 right in fours 12 To is 14 and one and 15. So we know for a fact that all these bit values here on the column of eight are on, they are on. But on the column of four, you're going to have zeros and one zeros and one, you know this, because if we got nine is 1001, is 10 1010, and so forth. The only remains true as far as all ones is the eight everybody else's, you know, 0000, because it will have a need for 16. But we do have any, for eight to be on all the time to be able to create this 910 11 1213 1415.

So the one that's going to have the uncommon values again, is this guy right here. All right, so move that over. Come on now. Let's move that over. So once again, we have a summary address of 10 dot 10 dot one dot What? Well, we do the same thing.

We take a look at all these good values right here, is there anything on all the way down to I mean, all zeros here, Let me slide this over a little bit. all zeros here, all zeros here, all zeros or all ones, or whatever we all want here in the a column. So that means that we need to put eight but the fourth octet is completely off. So that's zero. And then our new mask the same way anyone and then that is argue, some address. And you see, oh, we need it.

The first and the last. Now, that may not be the case in all circumstances where you know, you have let's say, cookies or a contiguous network. What happened? Eight, you know, what are we incrementing by eight. And then then the next one is 16 is 16, and then 24, and so forth on our network that we increment by four, you know, and then we have four, eight, you know, so what are our rules and summarization really talked about it is that it should be contiguous networks. But when it comes to quizzes, yeah, they don't really care about that rule.

They just put in a bunch of networks and they want you to summarize it all. They give you some new address, and they want you to know, well, what other networks are involved in this summary address? Okay. So now we got the same address just by getting the first and the last. Let's do one more example. Okay, again, 16.

Now let's take a look at it before we start putting anything we know that in order to get we know what 16 has to be on, that's for sure. Let's do that. Let's go 1000 16 zero 000 we know 60 has to be on 60 has to be on because there's no 32 here so we don't go to 32 All right, but we know when he 16 to make 1718 1921 to two so 16 is going to be on all the way down, all the way down. So, we got zero here. We got zero here, zero here. We got 16 we got a one.

And then one all the way across. All right, I think missing one here. Sure I got eight bits here. 12345678 Yeah. Okay. Ah, so you know that in the column 16 they're all on because we need 16 to make something right 1000 118 10010 19 10011 so forth.

So The 16 is always going to be on. Okay? But not the column of eight. Okay? Because if we see here we're going to have a difference. everything correctly here 124 816, zero to 1616 00010.

And then here there's a column 16 128 60 430-216-8421. Okay, so in here, we're going to have the one with uncommon values is a cider 20. Okay, well, that's 1234 and 16 will be a cider 20 as raw magical line there. Alright, and let's line everything up here. Okay? Pretty much.

Okay, there we go. All right, but let's make sure that we got these things done correctly. Let's check our math. All right, so that's one thing that we always want to do. Here. We said, Hey, eight is the one that's always on.

Okay? So the line is to the right of that eight. Okay? Because this is where we bump into right? zeros and ones. Here, the 16 is on it's always on.

So 16, right, but the one that's not all always on the one, the first one we bump into with a column of zeros and ones is eight. It's not always on. Okay, on the last one, which makes it 23 because you got 16 and four is 2028. looks funny right there. Okay, so yes, he that's why I'm saying I'm trying to take my math. So make sure there's a zero here. Yeah, there's a zero here.

This is where my math was wrong. That's why I was hesitant. I want to make sure 16 and four is 20 and 20 and two is 22 120. There we go. So align does not go there. Indeed.

The line goes here. There's where along goes. Alright, so let's bring this back. This back one. And then we'll take this one over and take this one. There we go.

Yeah, cuz I was good. That was give me 30. So my math was a little bit off. That's one thing you need to make sure you're going to do the shortcut method, just the first and the last. Make sure your math is on the money and that's why double check myself Okay, so here, it would still be the same mask. But now we're which values are not the zeros.

They're all zeros. They're all ones here. So the ones are the ones when 1010 dot one, dot 16 dot zero is the summary, address. And again, all we did, all we did is just find the first one, or the last one, and maybe pretty quick with the binary. You can do all this. And I'm sure they're gonna give you all these networks to do this, but this is how you get your summary address using the binary method.

Okay, this is how you get it. Now if I were you, I would write this down the summer No dresses, right? winner for the masculine for the masculine, ah, with their mask, because we're going to be needing these summer dresses when we go to our next lecture. So again, we use, we filled out the whole thing. But then we found now that we know that we can go just a first and the last and we're good to go. Right?

But again, because these are consecutive networks, it may work a little differently when they're non consecutive. So then just write all the binaries out. Just be quick about it. It's not that difficult, just putting ones and zeros. Okay. All right.

With that said, I hope you took no hope you wrote those three addresses down and I'll see you in the next