Subnets

Subnets



hi guys here's Francisco and I wanna show you how to create our shaft able to do your soobin edges and I think this is one of the easiest way that's how I do first I will create the shirt I will just copy something here and then I will explain to you how that works the first thing you have to know is that you're going to be working with IP version 4 which is 32 bits it is basic – and it is all the power of CHO that's how you calculate the IP version 4 in this first line you have the best show calculation the best page to mess here is 2 to the power 0 which is all number to the power 0 is e which one shoe to the power plant two to the second to the third and so on in this second line are gonna adjust the dots which can represent just the bits that we are going to be borrowing doing our subnet in this third line is the math whatever you borrow a bit that's what's going to be if you borrow one bit you have the value of 128 if you borrow two bits you have 128 plus 64 which is a virtual 192 if you borrow three bits 128 which is equal to 224 and so on copy all right you go in this line we'll have our own network now here we have our network if you borrow one bitch who have just open edges if you borrow two bits who have fought to be nerds if you borrow three bits hate to be nerds and so on and I'm gonna show you how it works in a price for example as you finish discharge now we have our host line if a bar one beach for the soothing edge right here you have to flee to you have to subanalysis and 256 hosts but we cannot use 256 we're not gonna have 250 for user blah dresses if you borrow two bits you have four villages and 128 addresses but you can use just 126 so as more bits you borrow you have more stability and less hosts and now I'm gonna add our that for super net is less notation here you have some necklace a which is less he4 borrow bitch this is lash edge becomes / 9 if the bar two bits become healers 10 is like 11 and so on in the Class B which is like is like 16 if you were a bitch which becomes 11 7 he'll / 17 18 and so on Class C which is a / 24 if you borrow on bitch it becomes 25 and so on now I'm gonna add just how the fulsol nightmare tsunaide mask just in case if someone doesn't remember this is are the possible night mask class K which is 255 dot 0 dot 0 dot 0 plus B 255 255 dot 0 dot 0 and plus C 255 255 255 dot 0 and also our IP address range which is gonna help us to figure out when you see this an IP address figure out in which range this IP belongs to so now we have our subnet church done now let's do some practical so over here we are request to create six villages with 30 hosts we have this network address 195 in which IP range which IP class this IP address belongs to 195 let's have a look in our search wuntch 127 class a 128 eh 2 1 I plus b1 h1 23 square C so here's one edge 5 after one I'm sure it is Class C so we know already that this is my IP address Class C which is what is our the for subnet mask for and Class C 255 255 255 dot 0 now what is up Kirstin subnet mask let's see we need six super nice let's have a look at our search we need six minutes over here we have to simulates four subunits and eight minutes in search so we're gonna draw a line yeah so if we need six minutes we have here a to be net so we we barge three bits to have eight minutes so 128 plus 24 plus cos 2 is to 24 so we just repeat the three first objects 255 255 touch 2 to 4 this is our film subnet mask because we bought three bits number two three total numbers of subnet our total numbers of Natasha's we see that is 8 total number two teenage age total number of host address we have here H is network and we have right here 32 for host address which is 1 2 3 4 5 2 to the 5 32 we have 32 host address and usable chakras 13 which is host minus 2 that's it using your shots we just feel this signature let's see another example choosing let's see the number H let's see the server which is a Class B yeah now we have disappear dress which is 1 7 th 1 7 th let's have a look in our range from 128 to 1 H 1 is Class B so this is a Class B what's the force of natural Class B to fit fire to fish file to fit 5.0 dot C now cursive netmask we need two thousand subnets number of needed usable hosts 15 inside to the line yeah number of needed usable holds 15 so now the question is we need 15 holes why don't you put the line here and get 60 host because we need to take out 2 so 6 16 is not enough we have to pull this line here and have 32 hosts hosts 32 useable 30 if you go all the way through to the age you have just 256 if you go to to the nine through to the nine you have 512 if you go if you borrow two bits two more bits and you go to to the 10 you have 1024 which is not enough and if you go to to the 11 you have 2048 which is enough will be posing age mm so if you borrow three bits you have 2048 which stops in to 24 which is your and if you have a look you went all the way two times one two three four five six seven eight and then you came back 9 10 11 so we're gonna fill this um subnet mask with 255 255 as we use all the objects in the first in the third octet it becomes 255 as well and we bought three maybe it's going to be 224 what's the total number of subnet the total number subnet is true to the path 11 which is 2048 subnets how many beats did we bore eleven that's it in this number seven now we're going to do another example we need three subnets and we have this IP address 200 175 which is a Class C is from let's see in our search from 192 to 123 it is classy so I have 200 is all the one I'd show this is a Class C IP address what's the subnet mask default subnet mask mask opposite 255 255 255 dot zero we need threesome 1945 holes have a look in our church we need just three subnets you can move this line for here and we need 42 host if we keep this line here we have touched two hosts it's not enough so we're gonna move to here we have 64 whores and false minutes and we also have our Christian subnet mask which is one nine one I chose looking at the church let's go back to our question Cruz subnet mask 255 touch 192 by 192 because we bought two bids 128 plus 64 is equal to 192 – do you want total number of subnets total number of subnets phosphonates net total number of host address 64 right here the right side of the line 64 number of user progress 6 4 – 2 6 – number of beats that rebar – obese this is the number each question let's have a look in the number each question the answers to make sure here you go subnet mask 255 255 192 total numbers of nets 4 6 4 just like we did

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