IP Address in Computer Networks

IP Address in Computer Networks

What is IP Address in Computer Networks?

IP Address is the logical address assigned to a device on a network for identification purpose. The IP address uniquely identifies computers on a TCP/IP network.

  • IP version 4
  • Private IP Address
  • Public IP Address
  • Static IP Address
  • Dynamic IP Address
  • IP version 6
Two different IP addressing standards are in use today namely IPv4 and IPv6.The IPv4 standard is most popular and supported everywhere.The  IPv6 standard is considered as a replacement for the present IPv4 and will be to be deployed in the near future.
 
IP Version 4 

IP version 4  is a 32 bit addressing system. The 32 bits are divided as 4 octets of 8 bits each.In IPv4 the ip address is categorized as Class  A, Class B, Class C, Class D,Class E.

Example
10.20.20.33 - Class A
191.122.33.22 – Class B
192.168.20.1 – Class C
 
Private IP Address vs Public IP Address

Private IP address is for use on a local area network (LAN) . Public IP address is for use on a public network like internet.
 
Static IP Address vs Dynamic IP Address

In static IP address assigning the IP address is assigned by a system administrator.The IP address is asssigned dynamically  by another device on the network on demand.
 
IP Version 6

The newer IPv6 is a 128 bit addressing system. The new address space thus supports 2 power 128 addresses. The IPv6 addresses are represented by eight groups of four hexadecimal digits, where each group is separated by a colon (:).
6002:0dc8:85b3:0000:0000:8c2d:0480:8445 is an example for IPv6 address.