Compatibility of IPV4 to the New IPV6

Asked By Mellisa Williamson 20 points N/A Posted on - 06/06/2012

I read that today is World Launch of IPV6 and that many large services turn on IPV6 addressing.  Is IPv6 backward compatible?

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Answered By Kristna Medlla -10 points N/A #144722

Compatibility of IPV4 to the New IPV6

Internet Protocol Version 6 (IPv6) is a network layer protocol and is the most recent development from IP field. It allocates the data communication to run on a packet switched network. Packet switching contains the delivery of  data in packets among the two nodes on a network. The IPv6 is used to substitute the extensively used Internet Protocol Version 4 or the IPv4 that is measured as the backbone of the newest internet. The IPv6 is usually called as the "next generation Internet" because of its growing abilities and the development through the current big scale implementation.

IPV6 is not backward compatible.

The IETF created a serious mistake when making IPv6. They did not generate the protocol to be compatible with the IPv4 which means a system that uses IPv6 will not be able to connect with a system running IPv4. Which surely looks like a substantial error. Without this, it is essential to process similar networks for a long time. And also, there must be a substantial logic to know which among the two protocols should be utilize for a specific communication session.

Hope this answers the question.

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Answered By marievasquez 0 points N/A #144723

Compatibility of IPV4 to the New IPV6

For this question, the answer is a big YES; the IPv6 is backward compatible with the assistance of transition technologies like Teredo and 6to4. See image for you reference the ISP Scenario this will help you more on checking what to apply for using IPv6.

 IPv6 supports all Operating Systems such as Windows Vista, Windows 2003, Windows XP and Windows CE 4.2 and 5.0 by the used of Basic socket interface extension called RFC 2133 and Advances sockets API called  RFZ 2292. In general IPv6 is more convenient and supportive to all. 

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Answered By Sharo 0 points N/A #144724

Compatibility of IPV4 to the New IPV6

Hi,

IPv6 is backward compatible with IPv4, with some additional techniques like tunneling.
IPv6 addresses are embedded with IPv4 addresses. The address space of IPv4 is 32 bit (i.e. 4.3 billion possible unique addresses) whereas IPv6 is 128 bit wide (i.e.2^128 possible unique addresses). The 32 bit address of IPv4 is embedded over to the last 32 bits of Ipv6 (128 bit).

Gateway or router is used to translate IPv6 packet to IPv4 packet (with the addition of Network Address Translation – Protocol Translation (NAT-PT)).
So IPv6 is more compatible with IPv4.

Regards,

Sharo

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