Saturday, 24 March 2012

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Internet Protocol version 6(IPv6)

Internet Protocol version 6(IPv6) is a new version of Internet Protocol (IP). It is designed to succeed the Internet Protocol version 4(IPv4) currently being used in the networks. Internet Protocol is the set of rules that are responsible to transfer the packets of data from the host over the network.

In order to communicate each computer requires a unique IP address to communicate in the network with the network and other computers. The growth of the internet users is increasing day by day that’s why we are facing the need for the new IP address series which is that’s why the IPv6 has been developed to fulfill the needs of the new IP addresses as the IPv4 can provide services to only 4 Billion users only after that IPv6 has to been used in any aspect. IPv6 is developed by the Internet Engineering Task Force (IETF) to deal with the exhaustion of the IPv4 addresses.

It is just like the IPv4 protocol but the real difference is that the IPv4 allows 32 for the IP address and can support 232 (4,294,967,296) addresses and the IPv6 uses 128-bit addresses and supports 2128 (3.4 × 1038) addresses. It solves many problems of the IPv4 which includes mobility, auto configuration and overall extensibility.



Microsoft is working on the IPv6 for long years to deliver the users with the transition from IPv4 to IPv6 which is due to the up gradation of the internet. It includes the built-in IPv6 support into Microsoft Windows which includes Windows 7 and Windows Server 2008 R2.

IPv6 Address Example

59.94.236.32 (IP address in IPv4 version Internet Protocol (IP) )
2002:3b5e:ec20::3b5e:ec20 (IP address in IPv6 version Internet Protocol (IP) )

Technical Specifications:


Feature
IPv4
IPv6
Address
32 Bits
128 Bits
Address Space
109 Possible Addresses
1038 Possible Addresses
Packet Header
Variable Size consumes more time
Fixed Size consumes less time
Packet Size
Smaller packets of maximum of 65536 octets
Up to 4 billion octets for high performance
Address Allocation
With Network classes A, B, C
IPv4 Compatibility and local use by link or site
Address Notation
Dotted Decimal Notation
Hexadecimal Notation with colons and abbreviations
Fragmentation
Multiple Step Fragmentation and done by the routers
Done at once by the host
Quality of Service
Defined by are not used consistently in real
Flow labeling, Priority and support for real time data
Security
Limited with no authentication
Authentication and Encryption
Configuration Management
Manual compilation of tables and support diskless workstation
Automatic configuration, Diskless support and limited human administration
Mobility
Uses Mobile IPv4 version of IP
Uses IPv6 for more router optimization and compatible with new 3G technology

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