DoD standard Internet Protocol
RFC 760

Document Type RFC - Unknown (January 1980; No errata)
Obsoleted by RFC 791
Updated by RFC 777
Last updated 2013-03-02
Stream Legacy
Formats plain text pdf html bibtex
Stream Legacy state (None)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state RFC 760 (Unknown)
Telechat date
Responsible AD (None)
Send notices to (None)
RFC: 760
IEN: 128
                                    
                                    
                                    
                                    
                                    
                                    
                                    
                              DOD STANDARD
                                    
                           INTERNET PROTOCOL
                                    
                                    
                                    
                              January 1980

                              prepared for
                                    
               Defense Advanced Research Projects Agency
                Information Processing Techniques Office
                         1400 Wilson Boulevard
                       Arlington, Virginia  22209

                                   by

                     Information Sciences Institute
                   University of Southern California
                           4676 Admiralty Way
                   Marina del Rey, California  90291


January 1980                                                            
                                                       Internet Protocol

                           TABLE OF CONTENTS

    PREFACE ........................................................ iii

1.  INTRODUCTION ..................................................... 1

  1.1  Motivation .................................................... 1
  1.2  Scope ......................................................... 1
  1.3  Interfaces .................................................... 1
  1.4  Operation ..................................................... 2

2.  OVERVIEW ......................................................... 5

  2.1  Relation to Other Protocols ................................... 5
  2.2  Model of Operation ............................................ 5
  2.3  Function Description .......................................... 7

3.  SPECIFICATION ................................................... 11

  3.1  Internet Header Format ....................................... 11
  3.2  Discussion ................................................... 21
  3.3  Examples & Scenarios ......................................... 30
  3.4  Interfaces ................................................... 34

GLOSSARY ............................................................ 37

REFERENCES .......................................................... 41

                                                                [Page i]



                                                            January 1980
Internet Protocol

[Page ii]                                                               



January 1980                                                            
                                                       Internet Protocol

                                PREFACE

This document specifies the DoD Standard Internet Protocol.  This
document is based on five earlier editions of the ARPA Internet Protocol
Specification, and the present text draws heavily from them.  There have
been many contributors to this work both in terms of concepts and in
terms of text.  This edition revises the details security,
compartmentation, and precedence features of the internet protocol.

                                                           Jon Postel

                                                           Editor

                                                              [Page iii]



January 1980 
RFC: 760
IEN: 128
Replaces:  IENs 123, 111,
80, 54, 44, 41, 28, 26

                              DOD STANDARD

                           INTERNET PROTOCOL

                            1.  INTRODUCTION

1.1.  Motivation

  The Internet Protocol is designed for use in interconnected systems of
  packet-switched computer communication networks.  Such a system has
  been called a "catenet" [1].  The internet protocol provides for
  transmitting blocks of data called datagrams from sources to
  destinations, where sources and destinations are hosts identified by
  fixed length addresses.  The internet protocol also provides for
  fragmentation and reassembly of long datagrams, if necessary, for
  transmission through "small packet" networks.

1.2.  Scope

  The internet protocol is specifically limited in scope to provide the
  functions necessary to deliver a package of bits (an internet
  datagram) from a source to a destination over an interconnected system
  of networks.  There are no mechanisms to promote data reliability,
  flow control, sequencing, or other services commonly found in
  host-to-host protocols.

1.3.  Interfaces

  This protocol is called on by host-to-host protocols in an internet
  environment.  This protocol calls on local network protocols to carry
Show full document text