
Version Numbers

(last updated 2007-06-27)

Registries included below:
- IP Version Numbers

Note:
In the Internet Protocol (IP) [RFC791] there is a field to identify
the version of the internetwork general protocol.  This field is 4
bits in size.

Registry Name: Internet Version Numbers
Reference: Not defined
Registration Procedures: Not defined

Registry:
Decimal  Keyword  Version                            Reference
-------  -------  ---------------------------------  --------------
0-1               Reserved                           [JBP][RFC4928]
2-3               Unassigned                         [JBP]
4        IP       Internet Protocol                  [RFC791][JBP]
5        ST       ST Datagram Mode                   [RFC1190][JWF]
6        IPv6     Internet Protocol version 6        [RFC1752]
7        TP/IX    TP/IX: The Next Internet           [RFC1475]
8        PIP      The P Internet Protocol            [RFC1621]
9        TUBA     TUBA                               [RFC1347]
10-14             Unassigned                         [JBP]
15                Reserved                           [JBP]


References
----------
[RFC791]   Postel, J., ed., "Internet Protocol - DARPA Internet Program
           Protocol Specification", STD 5, RFC 791, USC/Information
           Sciences Institute, September 1981.

[RFC1190]  Topolcic, C., Editor, "Experimental Internet Stream
           Protocol, Version 2 (ST-II)", RFC 1190, CIP Working Group,
           October 1990.

[RFC1347]  R. Callon, "TCP and UDP with Bigger Addresses (TUBA),
           A Simple Proposal for Internet Addressing and Routing",
           RFC 1347, June 1992.

[RFC1475]  R. Ullmann, "TP/IX: The Next Internet", RFC 1475, June 1993.

[RFC1621]  P. Francis, "Pip Near-term Architecture", RFC 1621, May 1994.              

[RFC1752]  Bradner, S., and A. Mankin, "The Recommendation for the IP
           Next Generation Protocol", RFC 1752, Harvard University,
           ISI, January 1995.

[RFC4928]  G. Swallow, S. Bryant, L. Andersson, "Avoiding Equal Cost 
           Multipath Treatment in MPLS Networks", RFC 4928, June 2007.


People
------
[Deering] Steve Deering, <deering&parc.xerox.com>, March 1995.

[JBP] Jon Postel <postel&isi.edu>

[JWF] Jim Forgie <FORGIE&XN.LL.MIT.ED>

[RH6] Robert Hinden <Hinden&ENG.SUN.COM>


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