IPv4 Vs IPv6 : Difference Between IPv4 And IPv6?

What is IP Address – IPv4 vs IPv6

IPv4 vs IPv6! The full name of the IP address is the Internet Protocol address. Whenever a device (computers, tablets, smartphones, etc.) is connected to the Internet, a unique address is given to that device, which is used to communicate the identity of that device to the Internet and communicate with other devices on the Internet.

In any network (LAN or WAN), along with the Internet, an IP address is required to connect and communicate devices together, in the same way as the unique names of all the members in the house are given so that the members of the household are one To know and communicate the other by their name. In this way, the IP address performs two functions – one to identify the identity and the other to locate.

An IP address is in a numerical format which is called human-readable format so that we can understand IP such as (IPv4), 2041: 0000: 130F: 0000: 0: 667: 4: 2 (IPv6). There are two different versions of IP address – IPv4 and IPv6. IPv4 is the oldest and most widely used format, while IPv6 is slowly coming in and replacing IPv4. Let’s look at IPv6 in detail –

What is IPv6

IPv6 stands for Internet Protocol version 6 and is an upgraded version of IPv4. This IPv6 function is also the same as that of IPv4 – providing a unique numeric IP address to the device to communicate over the Internet. IPv6 was developed by the IETF – Internet Engineering Task Force Organization (which develops Internet technologies).

Also Read: Compilers vs Interpreters – Difference Between Compilers and Interpreters

After the growth of Internet users after 1990, in addition to IPv4, such technology was needed which could support more network and Internet users. IPv4 uses 32-bit address and can simultaneously support 4.3 (2 ^ 32 IP addresses in total) million addresses while IPv6 uses 128-bit address and 3.4 × 10 ^ 128 (2 ^ 128 Internet addresses)

Benefits of using IPv6 address :

The IP address size increased from 32 bits to 128 bits so that more devices can be supported on the Internet.

The header format is simple.

More efficient routing is possible: In IPv6 the routing table size will be reduced so that routing will be more efficient and hierarchical. In IPv6, ISPs can announce IPv6 over the Internet by single prefixing their customer’s IP networks.

Due to multicast support, it sends large data packets simultaneously so that bandwidth can be fully utilized.

Network Address Translation (NAT) will not be required in IPV6, which will truly end to end device connectivity.

This address supports auto-configuration called address assignment.

Manual configuration ya DHCP is not required for IP.

Built-in authentication and privacy support.

The main difference between IPv4 and IPv6:

IPv4                                                                            IPv6

IPv4 is of 32 bit                                                                          IPv6 is of 128 bit

Number of Address -2 ^ 32                                                        Number of Address – 2 ^ 128

IPv4 is binary numbers represented in decimals                       IPv6 addresses are binary numbers represented in hexadecimal.

The Checksum field is required to find the error in the IPv4 header.   Checksum field removed from IPv6 Header

The header length is 20 bytes                                                   Header length is 40 bytes

IPsec support is optional.                                                          IPSec support is inbuilt.

It uses broadcast & multicast                                                    It does not use broadcast & multicase

Sending hosts and forwarding routers do Fragmentation         Fragmentation takes place only from the sending host. There is no role of router in it.

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