Running out of IP addresses: A look at the new versions of IP addresses (IPv6)

Type :

Theses

Pages :

31 pages

Format :

.doc

Published date :

05/27/2009

Category :

Science & technology

Sub category :

Computer science

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Summary :

Introduction
IPv6
1. Features
2. Addressing
3. Types of addresses
4. Unicast IPv6 addresses
Special IPv6 addresses
Multicast IPv6 addresses
IPv6 addresses for a host
IPv6 interface identifiers
1. EUI-64 address-based interface identifiers
2. IEEE 802 addresses
3. IEEE EUI-64 addresses
4. Mapping IEEE 802 addresses to EIU-64 addresses
IPv6 and DNS
1. The host address (AAAA) resource record
2. The IP6.ARPA domain
IPv4 header
The changes from IPv4 to IPv6 header
ICMPv6 error messages
Mobile IP
Summary and conclusion
References

Abstract

The current version of IP (IP version 4) has been extremely successful but according to experts, the Internet will face a serious problem in a few years. Due to its rapid growth and the limitations in its design, there will be a point when no more free addresses are available for connecting to new hosts. At that point, no more new web servers can be set up, no more users can sign up for accounts at ISP, and no more new machines can be set up to access the web or participate in online games. Many of us have heard of the proposals to convert the Internet Protocol standard from the current version IPv4 to a new standard ipv6. The reason for the new standard is the rapid growth of the Internet and ipv6 is being introduced to overcome the address space restrictions of the old one. ipv6 is a lot more than IPv4 by just adding and modifying some bits at the end to make the address space bigger. It is anticipated that there will be much more emphasis on real- time transactions. Many network administrators dislike changes like ipv6 because they fear some thing wrong can happen in future that will be for days or weeks later. But this is not going to be happen because, since an ipv6 network can talk to an IPv4 network and vice- versa.

The ipv6 header has a new format that is designed to keep in mind that it should out do the header overhead. This is done by changing the location of both non-essential fields and optional fields to extension headers that are placed after the ipv6 header. Currently only 32 bit address schemes are being used which is of IPv4 scheme.ipv6 has 128-bit (16-byte) source and destination IP addresses. The large address space of ipv6 designed for huge number of address allocation to fulfillment of the requirement of the internet.