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Browse Prior Art Database

Suggestion for New Classes of IP Addresses (RFC1375)

IP.com Disclosure Number: IPCOM000002199D
Original Publication Date: 1992-Oct-01
Included in the Prior Art Database: 2000-Sep-12
Document File: 6 page(s) / 16K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

P. Robinson: AUTHOR

Abstract

This RFC suggests a change in the method of specifying the IP address to add new classes of networks to be called F, G, H, and K, to reduce the amount of wasted address space, and to increase the available IP address number space, especially for smaller organizations or classes of connectors that do not need or do not want a full Class C IP address.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 19% of the total text.

Network Working Group P. Robinson

Request for Comments: 1375 Tansin A. Darcos & Co.

October 1992

Suggestion for New Classes of IP Addresses

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 RFC suggests a change in the method of specifying the IP address

to add new classes of networks to be called F, G, H, and K, to reduce

the amount of wasted address space, and to increase the available IP

address number space, especially for smaller organizations or classes

of connectors that do not need or do not want a full Class C IP

address.

Table of Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Suggestion for new IP address classes . . . . . . . . . . . . . 2

Current Class C Address . . . . . . . . . . . . . . . . . . 3

Proposed new Class C Address . . . . . . . . . . . . . . . 4

Proposed "Class F" address . . . . . . . . . . . . . . . . 4

Proposed "Class G" address . . . . . . . . . . . . . . . . 4

Proposed "Class H" address . . . . . . . . . . . . . . . . 5

Proposed "Class K" address . . . . . . . . . . . . . . . . 5

Optional selection of routing codes by region . . . . . . . . . 5

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Security Considerations . . . . . . . . . . . . . . . . . . . . 7

Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 7

Introduction

Currently, IP addresses on the Internet are 32-bit quantities which

are generally represented as four decimal numbers from 0 to 255,

separated by periods, sometimes called a "dotted" decimal number.

The current numbering scheme provides in general for three classes of

networks in general use (A,B, and C), and two other classes of

networks (D, E).

The Class A networks assign a large address space for the particular

network to allow up to 254^3 local machines [1]. The Class B network

assigns a somewhat smaller address space for the particular network

to allow up to 254^2 local machines. The Class C network assigns a

still smaller address space for the particular network to allow up to

254 local machines.

This memo proposes to assign part of the unused Class C address space

for smaller networks than are currently available. The term "Class

D" is used for the "multicast" capability and addresses in "Class E"

are reserved for future use. Therefore, these new features for which

capability is to be added is being referred to as classes F, G, H and

K.

Suggestion for new IP address classes

The most worrisome problem which appears in the literature is the

possibility of running out ...