IPv4 Addressing-Part-I

1. Subnetting (IP4)


Subnetting is only making systems inside a system. Subnetting permits an association with a solitary IP address (Class A/ClassB/ClassC) to have numerous subnetworks, in this manner permitting a few physical systems within the association.

Addresses are composed utilizing decimal numbers isolated by decimal focuses. This is called spotted decimal documentation of communicating IP addresses.

The diverse classes of IP addresses are as underneath:


System address of each of the zeros signifies “This system or fragment.

System address of every one of the 1s signifies “all systems”, same as hexadecimal of all Fs.

System number 127 is saved for loopback tests.

Host (Node) address of every one of the zeros signifies “This Host (Node)”.

Host (Node) address of each of the 1s signify “all Hosts (Nodes) ” on the predetermined system.

1. The location run and the comparing paired qualities for the primary octet of IP classes are as given underneath:


Class A


0. 0. 0. 0 = 00000000.00000000.00000000.00000000 = 01111111.11111111.11111111.11111111



Class B


128. 0. 0. 0 = 10000000.00000000.00000000.00000000 = 10111111.11111111.11111111.11111111



Class C


192. 0. 0. 0 = 11000000.00000000.00000000.00000000 = 11011111.11111111.11111111.11111111



Class D


224. 0. 0. 0 = 11100000.00000000.00000000.00000000 = 11101111.11111111.11111111.11111111



Class E


240. 0. 0. 0 = 11110000.00000000.00000000.00000000 = 11111111.11111111.11111111.11111111


2. The scope of numbers from to are utilized for multicast parcels. This is known as Class D address run.

I hope it has been a useful article.