IP ADDRESSING

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A unique Address used by the each device in a cyber network is known as an IP address, it is mainly used to communicate each other and hence ip address is used also to identify a device in a network. IP address is classified in to two IPV4 and IPV6 address.

Difference Between IPV4 and IPV6 Address

IPV4 IPV6
32 bit address 128 bit address
dotted decimal format hexa decimal format
IPv4 can support up to 232 addresses IPv6 is 128 bits, can support up to 2128 addresses to fulfill future needs with better security
uses 4 bytes for the address uses 16 bytes for the address
example:- 192.168.1.1 example:- 1050:0:0:0:5:600:300c:326b

IPV4 Address Types

IP address are again classified to 4 classes

class Range
A 0.0.0.0 to 127.255.255.255
B 128.0.0.0 to 191.255.255.255
C 192.168.0.0 to 223.255.255.255
D 224.0.0.0 to 234.255.255.255
E 240.0.0.0 to 255.255.255.254

class A,B and C are the unicast address; also class D is multicast Address, and class E Reserved for research

LoopBack Address

Loopback address is a special IP number that is designated for the software loopback interface of a machine. The loopback interface has no hardware associated with it, and it is not physically connected to a network..address 127.0.0.1 is the loopback address, and ip address 0.0.0.0 is an unknown network

A ip address has two parts:

  1. Network part
  2. Host part

Private IP Address

The IP address that are used in an local area networks are called private ip address, they are also static , as they will not change automatically the range of the private ip address are:-

class range
A 10.0.0.0 to 10.255.255.255
B 172.16.0.0 to 172.31.255.255
C 192.168.0.0 to 192.168.255.255