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All right guys that's the lap time again.
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As I promised to you I'm going to show you how we calculate the network ideas and how we can find the
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first and last type Hill races that we can use in that work on the white board.
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All right.
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I'm going to make you an example.
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We have an IP address and we are going to make
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our some amendments too.
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And that's our home mask.
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All right.
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As you can see that we have our eye on this and some mask right now.
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And the question is what is our network I.D. And what's the first and last IP addresses that I can use
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in this network.
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All right guys let's take a look to see how we can accomplish this girl.
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But first we need to remind something please remind them please remember that when we are talking in
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the slides we told you that I told you that you need to logically and your IP address with your certain
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that mask to get the network ID.
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All right.
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What is logical and as you remember from our slides again logical and it is the process will kill and
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that is just one
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frustration that four bits are both what if we're using both one and one are logical and the result
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will be one on the other scenarios.
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We are not going to have one.
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We are going to have rules.
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I need to here.
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We're going to have zero.
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All right let's take a look to the my IP address and subnet mask now and I'm going to logically end
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them and I'm going to get the my network ready for this I fear this.
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Why are we using this summit next.
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All right.
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Let's take a look to the white board last time going in.
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All right.
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Cleaning time OK.
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This is not ok.
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I'm writing my IP address then 14 on
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20 and 25.
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It was life over.
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OK.
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As you can see that we have for portions you know our IP address
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first second third and fourth portions you can see that we're not right there as as you consider.
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All right Paris is in decimal format but actually it's not.
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OK.
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That's for providing really reading.
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But actually our IP address will be in binary format which means binary format is.
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We just can't use true numbers.
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They are 1 and 0 just.
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OK.
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As you know the IP address is
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32 bits.
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We have talked this in our slides.
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And as you can see that we have four portions which means each portion going to be 8 bits or 8 8 mans
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and 0 or a whiles each field can be a bit.
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OK.
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Let's calculate the binary format of these numbers right now.
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OK what I'm gonna do is I'm going to calculate the binary format of 10:41 20 and 25 by using one and
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zeroes.
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OK what I'm going to do is for simplicity and get the right the power is off to which N is incorporating
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the binary format.
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OK true the power is 0 2 1 2 today the power to the power 3 4 5
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until Salwen I am writing this way down to my man.
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Come on we're writing on till 7.
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Because each portion consists of at bits and I'm beginning from zero and I am 27 which means one two
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three four five six seven and eight.
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As you can see.
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All right let's calculate this to the pool where zero is one true to the Power-One is to that's for
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and I'm riding the hopes that's going to be a
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16
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right.
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I wrote the powers of two
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to calculate the binary Walia.
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OK let's do a calculation.
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As you can remember what I said is I'm gonna use just 0 and 1 and I have to get these numbers.
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I need to get time first.
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Let's look at how I can get the 10 from here.
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I'm gonna to use this numbers.
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Let me call in here.
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You know how to calculate this in for
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OK.
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Howard can get
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10 using these numbers together.
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I'm going to add them together at some of them together and I need to find the 10.
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OK.
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To get 10 from here I came to
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AIDS.
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And two if I add eight to two there's going to be 10.
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All right.
86
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And I'm making one to the friends that I used to.
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OK.
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This is going to be one.
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This is going to be one and the other portions go to be zero zero zero zero and zero.
90
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All right.
91
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As you consider eight plus two is ten.
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And this is the binary format of 10.
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So as you can see.
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Let's go.
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I'm writing this.
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0 0 0 0 1 0 1 0.
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OK.
98
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That's my turn.
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Let me clean my hand and I need to get the 12:56 how we can get the 12:56 from here.
100
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It's again so easy.
101
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All right let's choose
102
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42 and 16.
103
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OK.
104
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32 plus 16.
105
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That's to be.
106
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This is going to be forty eight which is bigger than our number.
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All right.
108
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Which spell that I shouldn't use this or this.
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OK.
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How can I get it with you.
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41 as if I use 32 8 and 1.
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What will it be.
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It's going to be 41 right.
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1 plus 8 plus 32 as 41.
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Let's try that again.
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All right.
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I'm running it.
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Do you want 0 0 0 1.
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That's 41 great and cleaning and I need 22.
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Let's take it to the 20 now 20 will be less likely to be.
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And what if I make these portions 1 let's let's Carquest 12 14 15 nothing else.
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If I add this one to the end result will be this time 31 with a bigger than 20.
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Let's take up to that.
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What if I make here Zero.
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And these guys are 1 0 6 4 1.
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That means oh no it's going to be 0 2.
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I thought that is very healthy to anyone OK 16 for 20.
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Circle.
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OK.
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I'm going to use 0.
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On the other fellow's.
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Let's take a look.
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These are and these are now 0 0 0 1 0 0 1 0 1 0.
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0 0 0 1 0 0
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OK it and when you're 25 and that's going to be there's
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there's not there's this there's this less going to be zero you can calculate OK you can get this together
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and check if I'm doing right or wrong.
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All right.
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I'm saying that that's going to be 0 0 0 and 1 0 0 1.
140
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All right.
141
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Let's going in.
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This is my binary for men of
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my I Paris.
144
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All right.
145
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Let's take a look to the subnet mask if you remember my subnet mask is to revive 2 5 2 4 7 0 and I'm
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saying that I'm serious.
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Twenty four one that's in my summer mask and 8 0.
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It's OK if you
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if you add all these numbers to each other you're going to get the 2 5 5 which is the highest number
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that you can use in the Bible from that.
151
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All right.
152
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OK.
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True for 5 2 5 2 4 5 0 will be an that one subnet mask
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my sodomise but it's going to be like this one on one on
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yeah.
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And what about the third portion for abortion.
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This is going to be who's 0 K the 0 means we have a bit of zero or I'm cleaning you OK.
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This is the action time right now.
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I'm logical and my IP and sudden death mask.
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And remember that and will be just one when it's for both what.
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OK if I'm using just one of them one my end result will be the one.
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But on the other scenarios it's not going to be what it's going to be zero.
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I can use just two numbers in the binder from there 1 and zero.
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All right.
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I'm ending zero.
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And what the end result will be zero as I said zoom in on the second it is 0 2 0 0 0 and this is one
167
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I was going to be downs of.
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It's going to be one K one zero pay attention that that's going to be 1 2 1 and 0.
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All right.
170
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I got my number.
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Please pay attention that if I'm ending and number if I'm using logical and with 1 1 1 1 1 1 8 it will
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be 1.
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I'm getting the same results with my pets.
174
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OK I got 0 0 0 0 0 0 0 0 and 1 0 1 0.
175
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That's the same thing.
176
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As you can see that the binary format of 10 which I got in here.
177
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OK.
178
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Let's take a look to the second portion.
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This one again and I'm going to write this portion.
180
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But if you don't write it directly you can calculate you know how to calculate OK the logic behind this
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is logical and process just all right.
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I'm writing 0 0 1 0 1 0 0 1 that's the same thing with the £41 binary format.
183
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Let's take a look at a third person that's going to be the same again because that's one.
184
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All right.
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I'm taking loop and writing in Iran 0 0 1 and 0 1 0.
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All right.
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Let's take a look to the last portion.
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What's going to be the last portion.
189
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The last portion going to be cool.
190
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0.
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OK.
192
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Because if printed to check we don't have any one.
193
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We have zero we just mean at least one one bet to have one from the logical process.
194
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And because of that that's going to be zero.
195
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All right.
196
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0 0 0 0 0 0 and 0.
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0.
198
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All right.
199
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I got my network ID right now.
200
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This is minor.
201
00:17:49,820 --> 00:17:57,850
Heidi I get to work this one to the decimal for you know as you can see the
202
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I have four portions again.
203
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The first portion is 0 0 0 0 1 0 1 0.
204
00:18:08,370 --> 00:18:17,730
Guys you can write the powers of two and calculate the decimal format of this one again.
205
00:18:17,910 --> 00:18:27,480
But please keep in mind that police check 0 0 0 0 1 0 1 0 0 0 0 0 1 0 1 on my gun.
206
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They are the same police.
207
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OK.
208
00:18:30,870 --> 00:18:32,280
As you can see there.
209
00:18:32,430 --> 00:18:33,720
Please pay attention.
210
00:18:33,750 --> 00:18:46,240
If you are using the one on one on one on one with your subnet mask if your logically and then you're
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right Paris with her once you get the same Willy.
212
00:18:51,870 --> 00:18:54,720
OK that's 10.
213
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And this one is 41.
214
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This one is 20.
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What about this.
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What about the last one the last one going to be 0.
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All right here is my network I.D. 10 41 20 0.
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So I'm cleaning my car.
219
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This is my network Heidi.
220
00:19:42,850 --> 00:19:43,840
OK.
221
00:19:44,290 --> 00:19:53,920
But what I need to show you is the first I can that I can using this network the last IP address that
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I can use and the podcast so.
223
00:19:57,780 --> 00:19:58,580
Right.
224
00:19:58,930 --> 00:20:06,060
My stomach mass is 255 255 255.
225
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OK.
226
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All right.
227
00:20:10,580 --> 00:20:12,770
And we have a formula for this.
228
00:20:12,770 --> 00:20:25,510
The formula is to do the forward and decremented by two that gives us the top the IP address space that
229
00:20:25,510 --> 00:20:30,660
I can use in this network for this subnet mask.
230
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OK.
231
00:20:31,630 --> 00:20:41,780
So what is an steps for n is the total zero bits in my subnet mask.
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So in my subnet mask I have totally a zero.
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That's right.
234
00:20:50,650 --> 00:20:59,800
But keep in mind that I care less and subnet mask are thirty two bids and they are in for portion and
235
00:21:00,130 --> 00:21:02,940
each portion has a base.
236
00:21:03,070 --> 00:21:07,380
So I'm told we have 8 zeros for the scenario.
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So true to the power 8 two hundred and fifty four is the end result.
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That means I can use 254 IP addresses in this network with this subnet mask pretty good.
239
00:21:29,890 --> 00:21:34,230
So what's the first IP address the first IP address is.
240
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I'm incrementing the IP network ID by one.
241
00:21:39,730 --> 00:21:40,030
OK.
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That's the first IP address that we can use to any one.
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That's the first step.
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00:21:49,200 --> 00:21:57,670
So we cames if I can is totally 254 my last IP address will be
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00:22:00,800 --> 00:22:02,070
20.
246
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That $2 9:54 right.
247
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I'm starting with one finishing with 254 and that's going to be totally two hundred and fifty four IP
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addresses.
249
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All right.
250
00:22:17,170 --> 00:22:19,400
Pretty cool.
251
00:22:19,420 --> 00:22:27,730
The last thing I'm going to talk about is the broadcast like the broadcast address is to find the broadcast
252
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IP address.
253
00:22:28,810 --> 00:22:32,610
I'm incrementing the last IP address.
254
00:22:32,810 --> 00:22:33,250
Wow.
255
00:22:33,430 --> 00:22:34,060
OK.
256
00:22:34,330 --> 00:22:48,670
That means my broadcast will be 20 that 201 55 if I want to broadcast if I want to send a packet to
257
00:22:48,760 --> 00:22:59,690
everybody in my work in this network Heidi I should use this IP address that's broadcast.
258
00:23:00,040 --> 00:23:03,350
This one is last one.
259
00:23:03,370 --> 00:23:08,500
This is the first time that I'm using for.
20115
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