1.3 IP Addressing

IP address is a unique identifier of a computer on TCP/IP networks and on the internet.

Every computer requires a unique IP address to be a part of the internet and the IP address is provided by the internet service providers.

Every IP address consists of the 32 bits and a binary system of 0s and 1s. On a same network segment, all the IP address share the same network address.

There are five classes of the IP addresses such as A, B, C, D and E and only 3 classes are in the use.

	Class D IP addresses are reserved for the multicast group ant cannot be assigned to hosts and the E class IP addresses are the experimental addresses and cannot be assigned to the people.
	Every IP address consists of 4 octets and 32 bits. Every participating host and the devices on a network such as servers, routers, switches, DNS, DHCP, gateway, web server, internet fax server and printer have their own unique addresses within the scope of the network.
	If one has to send data to any host in the Internet, there is a need to uniquely identify all the hosts in the Internet. Thus, there is a need for a global addressing scheme in which no two hosts have the same address.

1.3 IP Addressing

Figure 1.1: Classfull IP addressing scheme

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing

1.3 IP Addressing