Sunday, July 10, 2011

What is The Meaning of IPv6?

In the field of internet networking, you would often hear the term IPv6 or IPv4. The two terms are often touted as an IP address. Then do you know what it is called IPv6? Below, infofika.co.cc will invite you to learn together about what is IPv6, and what is the meaning of IPv6?

Address IP version 6 (IPv6 addresses are often called) is a type of network addressing used in the network protocol TCP / IP using the IP protocol version 6. Total length is 128-bit, and theoretically can put address up to 2128 = 3.4 x 1038 host computers around the world. Examples of IP address version 6 is 21DA: 00D3: 0000:2 F3B: 02AA: 00FF: FE28: 9C5A

What is IPv6?
IPv6 is an abbreviation for “Internet Protocol Version 6?. IPv6 is a new generation Internet protocol developed by IETF [The Internet Engineering Task Force] to replace the current IPv4 internet protocol [IP version 4]. Most Internet users now use the old IPv4 almost 20 years.

This change is necessary because the fourth version of Internet Protocol addresses [IPv4] is forecast to be used up within a few years back .. Increasingly, the number of subscribers and web pages will further increase worldwide, and it is feared that IPv4 addresses to accommodate approximately 4.3 billion it can not accommodate such growth.

IPv6 applications are still new and most operating systems [OS] computers already support IPv6. If you’ve used Windows Vista you will see the settings for IPv6 in the Network Connections. For Windows XP and Windows 2000 is still in trial for IPv6. Macintosh, IPv6 may be used in MAC OS X 1.2 Jaguar. Mac OS version 9 does not support IPv6.

As a new generation Internet addressing protocol, IPv6 course comes with many advantages than this predecessor, IPv4. Want to know what the difference?

Here are the differences between IPv4 and IPv6:

Features
IPv4: The number using a 32 bit address so that the number of unique addresses that supported limited to 4,294,967,296 or over 4 billion IP addresses only. NAT is able to simply slow down the endless number of IPv4 addresses, but basically IPv4 only uses 32 bits so it can not offset the rate of growth of the internet world.

IPv6: Using 128 bit to support the 3.4 x 10 ^ 38 unique IP addresses. This massive amount more than sufficient to solve the problem of the limited number of IPv4 addresses permanently.

Routing
IPv4: routing performance declines with the growing size of routing tables. Cause examination MTU header in each router and switch hops.

IPv6: The routing process is far more efficient than its predecessor, IPv6 has the ability to manage large routing tables.

Mobility
IPv4: Support to mobility limited by roaming capabilities when switching from one network to another.

IPv6: Meeting the needs of high mobility through roaming from one network to another network while still maintained the continuity of the connection. This feature supports the development of applications.

Security
IPv4: Although commonly used in securing the IPv4 network, the IPsec header is an additional feature options on the standard IPv4.

IPv6: IPsec was developed in line with IPv6. IPsec header became mandatory in the standard features of IPv6 implementation.

Size of header
IPv4: 20 octet base header size plus the size of the header options that can vary.

IPv6: 40 octet fixed header size. A number of headers in IPv4, such as Identification, Flags, Fragment Offset, Header Checksum, and Padding has been modified.

Header checksum
IPv4: There is a header checksum is examined by each switch (the device layer to 3), thus adding delay.

IPv6: The checksum is not done at the header level, but end-to-end. IPsec header has adequate security guarantees

Fragmentation
IPv4: Performed at every router hop that slow down performance. The process becomes even longer if the data packet size exceeds the Maximum Transmission Unit (MTU) packet is fragmented before it put back together at the destination.

IPv6: Only performed by the host that sends packets of data. In addition, there are MTU discovery feature that determines the fragmentation of a more precise match the smallest MTU value contained in a network from end to end.

Configuration
IPv4: When a host connected to a network, configuration is done manually.

IPv6: It has a stateless auto configuration feature whereby when a host connected to a network, configuration is done automatically.

Quality Service
IPv4: Using mechanisms for best effort regardless of their needs.

IPv6: Wear mechanism best level of effort that ensures the quality of service. Header class traffic prioritizing data packet delivery based on the need for high speed or high latency level.

Well, that’s a little knowledge about what is meant by IPv6 or IPv4. Quite easy to understand, is not it? Hope this article about what is IPv6 is, can increase your knowledge. Hopefully helpful, happy learning!

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