Browse Prior Art Database

Renumbering Needs Work (RFC1900)

IP.com Disclosure Number: IPCOM000004222D
Original Publication Date: 1996-Feb-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 4 page(s) / 9K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

B. Carpenter & Y. Rekhter: AUTHOR

Abstract

Renumbering, i.e., changes in the IP addressing information of various network components, is likely to become more and more widespread and common. The Internet Architecture Board (IAB) would like to stress the need to develop and deploy solutions that would facilitate such changes.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 30% of the total text.

Network Working Group B. Carpenter

Request for Comments: 1900 Y. Rekhter

Category: Informational IAB

February 1996

Renumbering Needs Work

Status of this Memo

This memo provides information for the Internet community. This memo

does not specify an Internet standard of any kind. Distribution of

this memo is unlimited.

Abstract

Renumbering, i.e., changes in the IP addressing information of

various network components, is likely to become more and more

widespread and common. The Internet Architecture Board (IAB) would

like to stress the need to develop and deploy solutions that would

facilitate such changes.

Table of Contents

1. Motivation................................................... 1

2. DNS versus IP Addresses...................................... 2

3. Recommendations.............................................. 3

4. Security Considerations...................................... 4

Acknowledgements................................................ 4

Authors' Addresses.............................................. 4

1. Motivation

Hosts in an IP network are identified by IP addresses, and the IP

address prefixes of subnets are advertised by routing protocols. A

change in such IP addressing information associated with a host or

subnet is known as "renumbering".

Renumbering may occur for a variety of reasons. For example, moving

an IP host from one subnet to another requires changing the host's IP

address. Physically splitting a subnet due to traffic overload may

also require renumbering. A third example where renumbering may

happen is when an organization changes its addressing plan. Such

changes imply changing not only hosts' addresses, but subnet numbers

as well. These are just three examples that illustrate possible

scenarios where renumbering could occur.

Increasingly, renumbering will be needed for organizations that

require Internet-wide IP connectivity, but do not themselves provide

a sufficient degree of address information aggregation. Unless and

until viable alternatives are developed, extended deployment of

Classless Inter-Domain Routing (CIDR) is vital to keep the Internet

routing system alive and to maintain continuous uninterrupted growth

of the Internet. With current IP technology, this requires such

organizations to use addresses belonging to a single large block of

address space, allocated to their current service provider which ...