IPV4 versus IPV6

IPV4 versus IPV6

Introduction

Most of the business organizations and networks today are using IPV4 as their network addressing standard, they are using this standard with the exception of some governmental and DoD agencies. In this paper we are going to find out the major difference lying between IPV4 and IPV6, along with that we are also going to analyze the measures that are required for the transition from IPV4 to IPV6. The problem that nowadays are being faced by many businesses is that the internet has now become more and more exhaustive, and the addresses available for IPV4 (to understand, address as 209.85.129.106 - i.e. the typical public address with which you are seen and can be reached through the network). With the advance of technology, the increasing spread of mobile devices with Internet access and the continued expansion of broadband network, has led to a high number of connected devices.

Discussion

The current IPv4 protocol is technically limited to 4.3 billion addresses. Even with a rough estimate based on the number of devices with Internet access that each person owns and thinking about the current spread of the internet you can come to understand that while there 4.3 billion addresses. IPv6 is designed primarily to solve this problem the number of addresses that can be allocated (a problem that had already been glimpsed in the early days of the birth of the Internet).

This protocol allows for a number of unique addresses equal to 2 ^ 128 (= 3.4 * 10 ^ 38 approx) in short, a number so high that it is even unpronounceable. It consists of 8 blocks of four hexadecimal digits per block, compared with 4 blocks from 1 to 255 to each IPv4. Besides the huge address space, however, the IPv6 protocol introduces improvements in other ways: faster processing of packets, better multicast communication. The most visible difference between IPv4 and IPv6 addresses, the address length. IPv4 addresses are 32 bits long, IPv6 addresses are 128 bits count. That makes for a much larger pool of available addresses. The two types of addresses can also cooperate. There are several methods available.

The crux

The real difference between the two lies elsewhere: in the headers. This allows IPv4 and IPv6 are incompatible. A packet header in IPv4 has a variable length, while IPv6 fixed header length of the packet header knows that up to forty bytes long. (Adapted following comments F5 Networks, see below in the comments.) Traditionally, in IPv4, the header includes the options, while it is in after the IPv6 header will be added. That provides long-term flexibility and options. These are crucial differences that affect the processing of packets in the engines that we find routers and switches. Only a so-called dual-stack infrastructure with two independent network stacks and the corresponding translation of the two protocols is able to simultaneously deal with IPv4 and IPv6. This makes the migration a very complex matter. Most organizations have therefore postponed, even now the last ...