IESG Deliberations on Routing and Addressing
RFC 1380
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RFC - Informational
(November 1992; No errata)
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2013-03-02
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IETF
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RFC 1380 (Informational)
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Network Working Group P. Gross
Request for Comments: 1380 IESG Chair
P. Almquist
IESG Internet AD
November 1992
IESG Deliberations on Routing and Addressing
Status Of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard. Distribution of this memo is
unlimited.
Abstract
This memo summarizes issues surrounding the routing and addressing
scaling problems in the IP architecture, and it provides a brief
background of the ROAD group and related activities in the Internet
Engineering Task Force (IETF).
It also provides a preliminary report of the Internet Engineering
Steering Group (IESG) deliberations on how these routing and
addressing issues should be pursued in the Internet Architecture
Board (IAB)/IETF.
Acknowledgements
This note draws principally from two sources: the output from the
ROAD group, as reported at the San Diego IETF meeting, and on
numerous detailed discussions in the IESG following the San Diego
IETF meeting. Zheng Wang, Bob Hinden, Kent England, and Bob Smart
provided input for the "Criteria For Bigger Internet Addresses"
section below. Greg Vaudreuil prepared the final version of the
bibliography, based on previous bibliographies by Lyman Chapin and
bibliographies distributed on the Big-Internet mailing list.
Table of Contents
1. INTRODUCTION.................................................. 2
2. ISSUES OF GROWTH AND EVOLUTION IN THE INTERNET............... 3
2.1 The Problems................................................ 3
2.2 Possible Solutions.......................................... 5
3. PREPARING FOR ACTION.......................................... 7
3.1 The IAB Architecture Retreats................................ 7
3.2 The Santa Fe IETF............................................ 7
3.3 The ROAD Group and beyond.................................... 8
Gross & Almquist [Page 1]
RFC 1380 ROAD November 1992
4. SETTING DIRECTIONS FOR THE IETF............................... 10
4.1 The Need For Interim Solutions............................... 10
4.2 The Proposed Phases.......................................... 10
4.3 A Solution For Routing Table Explosion -- CIDR............... 12
4.4 Regarding "IP Address Exhaustion"............................ 13
4.5 Milestones And Timetable For Making a Recommendation for
"Bigger Internet Addresses".................................. 14
5. SUMMARY....................................................... 15
Appendix A. FOR MORE INFORMATION................................. 16
Appendix B. INFORMATION AND SELECTION CRITERIA FOR "BIGGER
INTERNET ADDRESSES".................................. 16
Appendix C. BIBLIOGRAPHY......................................... 20
Security Considerations.......................................... 21
Authors' Addresses............................................... 22
1. INTRODUCTION
It seems unlikely that the designers of IP ever imagined at the time
what phenomenal success the Internet would achieve. Internet
connections were initially intended primarily for mainframe computers
at sites performing DARPA-sponsored research. Now, of course, the
Internet has extended its reach to the desktop and is beginning to
extend into the home. No longer the exclusive purview of pure R&D
establishments, the Internet has become well entrenched in parts of
the corporate world and is beginning to make inroads into secondary
and even primary schools. While once it was an almost exclusively
U.S. phenomenon, the Internet now extends to every continent and
within a few years may well include network connections in every
country.
Over the past couple of years, we have seen increasingly strong
indications that all of this success will stress the limits of IP
unless appropriate corrective actions are taken. The supply of
unallocated Class B network numbers is rapidly dwindling, and the
amount of routing information now carried in the Internet is
increasingly taxing the abilities of both the routers and the people
who have to manage them. Somewhat longer-term, it is possible that
we will run out of host addresses or network numbers altogether.
While these problems could be avoided by attempting to restrict the
growth of the Internet, most people would prefer solutions that allow
growth to continue. Fortunately, it appears that such solutions are
possible, and that, in fact, our biggest problem is having too many
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