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Tuesday, August 23, 2016

Why is there no iPv5 after iPv4? Story of what happened between ipV4 and ipv6

It is really interesting to know Why is there no iPv5 after iPv4? When my brother asked this i retold him thr Story of what happened between ipV4 and ipv6. His knowledge did wonders to him at his college. Today I share it with my readers ;)

To start with, lets note that ipv5 actually doesn't exist. While this may seem confusing, version 5 was in fact intentionally skipped to avoid confusion, or at least to rectify it. The problem with version 5 relates to an experimental TCP/IP protocol called the Internet Stream Protocol, Version 2, originally defined in RFC 1190. 


IPv5 was used to define an experimental real-time streaming protocol. To avoid any confusion, it was decided to not use IPv5 and name the new IP protocol IPv6. Another thing is that IPv6 has a high span of IP adresses that is up to 340 trillion trillion trillions.


This protocol was originally seen by some as being a peer of IP at the Internet Layer in the TCP/IP architecture, and in its standard, these packets were assigned IP version 5 to differentiate them from “normal” IP packets (version 4). This protocol apparently never went anywhere, but to be absolutely sure that there would be no confusion, version 5 was skipped over in favor of version 6.


For academic geeks, IPv5 was used to define an experimental real-time streaming protocol. To avoid any confusion, it was decided to not use IPv5 and name the new IP protocol IPv6. Another thing is that IPv6 has a high span of IP adresses that is up to 340 trillion trillion trillions.

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