Connected: An Internet Encyclopedia
RFC 1519

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RFC 1519

RFC 1519 Network Working Group
Request for Comments: 1519
Obsoletes: 1338
Category: Standards Track

V. Fuller
T. Li
J. Yu
K. Varadhan
September 1993

Classless Inter-Domain Routing (CIDR):
an Address Assignment and Aggregation Strategy

Status of this Memo

This RFC specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" for the standardization state and status of this protocol. Distribution of this memo is unlimited.


This memo discusses strategies for address assignment of the existing IP address space with a view to conserve the address space and stem the explosive growth of routing tables in default-route-free routers.

Table of Contents


The authors wish to express their appreciation to the members of the ROAD group with whom many of the ideas contained in this document were inspired and developed.

Next: 1. Problem, Goal, and Motivation

Connected: An Internet Encyclopedia
RFC 1519