Where is IP ver 5?

Posted on 2004-03-22
Last Modified: 2008-03-03

Every one knows that we have IP ver 4 and we are moving to IP ver. 6, So where is IP ver. 5?

Any onw knows where is IP ver. 5?

Question by:Mohsen1979
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Accepted Solution

☠ MASQ ☠ earned 125 total points
ID: 10655507
Version 5 was allocated to the experimental Internet Stream Protocol (RFC 1190).  The numbering convention is to allocate even numbers to the mainstream versions.

Expert Comment

ID: 10655581
hi Mohsen1979,
    The version field 5 in the IP header is for Stream IP Datagram Mode (experimental).
It was for experimental purpose and never really made to the public.The next available version was 6 ,therefore the name IPv6.
refer to :
RFC 1819.


Expert Comment

ID: 10674729
The same question has been answered so many times!
Here is one such answer:


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