Classful Addressing vs Classless Addressing/ What is the difference between classful and classless addressing?

Hello Friends, In this blog post(Classful Addressing vs Classless Addressing) I am going to let you know about the differences between classful addressing and classless addressing.

Inside this blog post(Classful Addressing vs Classless Addressing), we are going to explore What is the difference between class and classless addressing? What is Classful addressing?……

….What are the advantages of classless addressing over Classful addressing? Is Classful addressing still used? |Classful Addressing vs Classless Addressing|

What is the difference between classful and classless addressing?

In classful addressing or routing the address is divided into three parts which are a network, subnet, and host, whereas in the classless addressing or routing the address is divided into two parts which are subnet and host.

What is Classful addressing?

Classful addressing is an architecture of dividing the address into three parts network, subnet, and host. We had been using this network architecture since 1981 until the introduction of classes inter-domain routing architecture in 1993 in which the IP address is divided into five classes. And the first four bits leads to the address of the network.

What are the advantages of classless addressing over Classful addressing?

There are many factors that make the classes addressing advantageous over-classful addressing. they are listed below:

Subnet information is not sent in case of classful addressing.
classless addressing provides efficient address space as compared to the classful addressing.
Memory is allocated in the form of bits and bytes rather than a chunk of contiguous memory.
Classless addressing eliminates any class imbalance.
There are no separate entities for subnetting in classless addressing.
Routing entries are much efficient in classless addressing.

Is Classful addressing still used?

You can rarely see the IPv4 classes used in addressing anywhere in the network as they have been deprecated in 1993. So it has been a matter of past and can be seen very rarely where the old and obsolete routing protocol.


In classful addressing, the concept of classes was used to designate the different types of addressing, whereas in classless addressing there are no classes, but the address is still granted in blocks.

In classful addressing, address space is divided into five classes namely, class A, B, C, D, and E. Each class occupies some part of the address space. Whereas in classless addressing it incorporates variable-length blocks of IP addresses that essentially belong to no class.

In classful addressing a large part of the available addresses was wasted, whereas in classless addressing which is almost obsolete is replaced with classless addressing.

Conclusion:

Using this blog post(Classful Addressing vs Classless Addressing) we have gone through What is the difference between classful and classless addressing? What is Classful addressing? What are the advantages of classless addressing over Classful addressing? Is Classful addressing still used?

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Anurag

I am a blogger by passion, a software engineer by profession, a singer by consideration and rest of things that I do is for my destination.