IPV4 and IPV6

IPV4 vs IPV6

An IP address is a numeric and text address used to communicate between two or more electronic devices each other. which identify the devices across the internet so the can be located. every device that is identified through its own IP addresses. IP address divided into classes. 

1. IPV4: IPV4 address is a numeric address invented in september1981. since then internet user and equipment use keep increasing day by day very fast.
IPV4 is a 32-bit address and contains up to four billion 4,294,967,296 addresses. now the question is four billion IPV4 address will full fill our requirement in this current technology world where every device can be connected with internet really not we need to find out other solution or a new version of the address to full fill the requirement.

IPV4 has four octets every octet ahs 8 bit and divided into five classes class A-to-E. where class A-to-C used for industry. class D used for multicast and class E reserved for Experimental purpose.

Let's move on why we need the ipv6 address.  

2. IPV6: As mention, earlier the shortage of IP address in IPv4, improve security, etc. IPv6 is the latest version of the IP address. IPv6 is quickly on its way to becoming the new backbone of the internet. and it's probably not a bad thing.

The number of available addresses shouldn’t be a problem for a very long time as IPv6 has 340 undecillion addresses.

Here's an example of a full IPv6 address: 

                         FE80:CD00:0000:0CDE:1257:0000:211E:729C

IPv6 will help to manage the increasing number of devices and things in many ways.

2.1 The advantage of IPv6:    

• Reliability
• Faster Speeds
• Stringer Security
• Routing efficiency
• Global Reachability
• Enhanced Encryption
• Higher Website Conversion
• Improved User Experience
• Better Customer Insights

2.2 Disadvantages of IPv6:

Communication: IPv4 and IPv6 machines cannot communicate directly with each other. They need in-between equipment to make that possible.

Transition: For an individual to switch from IPv4 to IPv6, it requires immense effort and countless hours.

Readability: IPv6 sub-netting is very difficult to comprehend while remembering your IPv6 address is nearly impossible, unlike IPv4.

Reference:

IPv6- https://www.juniper.net/documentation/en_US/junos/topics/concept/ipv6-flow-ipv6-address-types.html
Subnetting calculator: http://www.subnet-calculator.com/