Compare and contrast the fields in the main headers of IPv4 and IPv6
During the starting of the Internet, IPv4 was mainly used everywhere but nowadays due to an increase in the use of the Internet for almost every possibility, the address space has exhausted. Therefore, IPv6 was introduced which has almost infinite address capability with advanced features like auto-configuration of IP address and mobility, etc. and this address space will not be exhausted in the near future. In this blog, we will see the differences between IPv4 and IPv6 versions of IP addresses . Show IPv4IP version 4 is the older version. It uses 32 bits to create a single uniques address on the internet. IPv4 is limited to 4,294,967,296 addresses i.e. 2³² addresses. It consists of four numbers each of which can contain one to three digits ranging from 0 to 255 separated by a single dot(.). Here, each number is the decimal representation(base-10) for an 8 digit binary number(base-2). These IP addresses pretty much guarantee that our emails will come and go as expected, our google searches would take us to the website where we want and so many other things that we do on the internet. Example of an IPv4 address: 63.171.234.171 IPv4 Packet FormatIPv4 datagram is a variable-length packet composed of the header(20 bytes) and data(up to 65,536 bytes).
IPv6It is the replacement for IPv4. It uses 128 bits to create a uniques address. This means that there can be theoretically 2¹²⁸uniques address i.e. 340,282,366,920,938,463,463,374,607,431,768,211,456 and this number will never run out(at least in near future). It consists of eight groups of hexadecimal numbers separated by a colon(:). The IPV4 version used numerical values, so, IPv6 adopted the hexadecimal numbers to avoid any conflict. If any group contains all zeros then the notation can be shortened by using a colon to replace the zeroes. Example of an IPv6 : adba:1925:0000:0000:0000:0000:8a2e:7334 In the above IP address, four groups contain only zeros. This zero can be replaced by a colon and can be re-written as adba:1925::8a2e:7334. IPv6 Packet FormatIPv6 datagram is a packet composed of the base header ( 40 bytes) and payload (up to 65,536 bytes) Payload has extension header (optional) and data packet . The base header consists of the following fields:
Difference between IPv4 and IPv6
This is all about IPv4 and IPv6. Hope you learned something new today. Do share this blog with your friends to spread the knowledge. Visit our YouTube channel for more content. You can read more blogs from here . What are the fields in IPv4 and IPv6 packet header?IPv4 addresses are 32bit binary numbers and IPv6 addresses are 128 bit binary numbers. In IPv4 header, the source and destination IPv4 addresses are 32 bit binary numbers. In IPv6 header, source and destination IPv6 addresses are 128 bit binary numbers. IPv4 header includes space for IPv4 options.
What are the differences and similarities between IPv4 and IPv6?IPv4 is a 32-Bit IP address, whereas IPv6 is a 128-Bit IP address. IPv4 is a numeric addressing method, whereas IPv6 is an alphanumeric addressing method. IPv4 binary bits are separated by a dot(.), whereas IPv6 binary bits are separated by a colon(:). IPv4 offers 12 header fields, whereas IPv6 offers 8 header fields.
Which has more fields IPv4 or IPv6?It's smaller in size: IPv4 uses 32 bit binary numbers whereas IPv6 uses 128-bit binary numbers. Size matters not, however. Or at least matters less. The IPv6 header is more streamlined: it contains 8 fields, compared to IPv4's 14 fields.
What are the fields in the IPv6 header?A Next Header field in the IPv6 header indicates the next extension header. Within each extension header is a Next Header field that indicates the next extension header. The last extension header indicates the upper layer protocol (such as TCP, UDP, or ICMPv6) contained within the upper layer protocol data unit.
|