![]() In our question, it is mentioned that maximum 62 users are in one network. So, remaining 64-2= 62 addresses can be used by hosts. One of these addresses is network and the other is broadcast address. And with this 6 bits, we will have 2^6=64 addresses. With this 2 borrowed bits, we will have 2^2=4 networks. To have 4 networks, we should borrow 2 bits from the host parts. Here, again we have 24 bits network part and 8 bits host part according to our subnetting mask. With more practices, you will not need to do this and you can quicly determine the subnet values.īinary : 01001000.00001110.00001111.00000000 /24 Here, I am writing these addresses in binary format to show you. Let’s write our address in binary format again. Which network addresses should we use for these new networks? We would like to use this prefix in 4 different networks for maximum 62 users in each network. So, in decimal, our subnets will be like below: As you can see below, it is the first bit of the last octet. We will use 0 and 1 for this borrowed bit. To build these two subnets, we will change the borrowed bit only. So, for these two new subnets, subnet mask will be /25. Why 1 bit?Īs you can see above, with 1 bit, we can have 2 subnets ( 2^1=1).Īfter borrowing this address, our network part will be 24+1=25 bits. How many subnet do we need? For this question, we need 2 subnets. So, how many bits we will borrow? To determine this, we will check our subnet need. So, to divide this network, we should borrow some bits from the host part. This means that, our first 24 bits are network and the remaining parts are host bits in this subnetting mask. How can we divide this IPv4 prefix into two different subnet?Īs you can see below, we will use this two subnets for different networks that is connected to our router.įirstly, lets write our IPv4 address in binary format.īinary : 01100100.01100100.00000000.00000000 /24Īccording to our prefix, our subnet mask is /24. So, let’s start our examples and overcome this basic lessons of networking. Here, we will give different types f subnetting examples and with these subnetting examples, you will be ready for real World subnetting operaitons. In this lesson, we will learn IP Subnetting with examples. There is no classes and there is no specific class Subneting masks.įor your Subnetting Mask Calculations and Subnetting Operations, you can use our Subnetting Cheat Sheet. Here, you can use /24 for an ip address 10.0.0.1 or you can use /8 for an ip address 202.145.4.78. In other words, there is not a strict rulet o use a specific subnet mask for any class or any type of ip address. ![]() In this subnetting type, subnet has different lengths and different hots and networks are in these subnets. To overcome this issue, Classless Subnetting is used. You should use strict numbers and ip address waste is a lot. This is an inefficient use of ip addresses. There are 8 bits network part and 24 bits host parts. Or in Class A addresses, this is reverse. For example a class C address has 24 bits network part and 8 bits host part. With these IP classes, there are fixed subnets that has fixed number hosts and networks. Classless Subnetting (Variable Length Subnetting)Īs you know there are IP classes of IPv4 addresses.Classful Subnetting (Fixed Length Subnetting).You can do this with fixed length or variable length Subnetting Mask. By doing this, you can produce different broadcast networks with you one nework. Subnetting is basically dividing your network in different sub networks.
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