ID ACTION:draft-ietf-pip-ipit-transition-00.txt

Internet-Drafts@CNRI.Reston.VA.US Wed, 07 July 1993 13:28 UTC

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Subject: ID ACTION:draft-ietf-pip-ipit-transition-00.txt
Date: Wed, 07 Jul 1993 09:23:05 -0400
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A New Internet Draft is available from the on-line Internet-Drafts 
directories. This draft is a work item of the P. Internet Protocol Working 
Group of the IETF.                                                         

       Title     : IP Independent Transition (IPIT) for Pip                
       Author(s) : P. Francis
       Filename  : draft-ietf-pip-ipit-transition-00.txt
       Pages     : 17

This document outlines a transition scheme for moving from IP to Pip. While
this document discusses Pip in particular, it could be applied to any IPng.
The transition scheme discussed here is called IPIT, for IP Independent 
Transition.  It has been developed to address problems with the IPAE 
transition scheme, after which the previous Pip transition scheme was 
based. 
                                                                
The shortcomings of IPAE stem from its reliance on IP addresses during the 
first phases of transition.  The result is that IP-only hosts will not be 
able to talk to IPng hosts after IP addresses have depleted.  IPIT allows 
new Pip systems to talk to IP systems without a globally unique IP address.
As a result, IP address depletion is less likely with IPIT, and IP-only 
hosts will be able to talk to Pip hosts forever.  In this sense, IPIT is as
much a co-existence scheme as it is a transition scheme.                   

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