Month: May 2017

Network Working Group David C. Plummer Request For Comments: 826 (DCP@MIT-MC) November 1982 An Ethernet Address Resolution Protocol -- or -- Converting Network Protocol Addresses to 48.bit Ethernet Address for Transmission on Ethernet Hardware Abstract The implementation of protocol P on a sending host S decides, through protocol P's routing mechanism, that it wants to transmit to a target host T located some place on a connected piece of 10Mbit Ethernet cable. To actually transmit the Ethernet packet a 48.bit Ethernet address must be generated. The addresses of hosts within protocol P are not always compatible with the corresponding Ethernet address (being different lengths or values). Presented here is a protocol that allows dynamic distribution of the information needed to build tables to translate an address A in protocol P's…

RFC: 793 TRANSMISSION CONTROL PROTOCOL DARPA INTERNET PROGRAM PROTOCOL SPECIFICATION September 1981 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   September 1981 Transmission Control Protocol TABLE OF CONTENTS PREFACE ........................................................ iii 1. INTRODUCTION ..................................................... 1 1.1 Motivation .................................................... 1 1.2 Scope ......................................................... 2 1.3 About This Document ........................................... 2 1.4 Interfaces .................................................... 3 1.5 Operation ..................................................... 3 2. PHILOSOPHY ....................................................... 7 2.1 Elements of the Internetwork System ........................... 7 2.2 Model of Operation ............................................ 7 2.3 The Host Environment .......................................... 8 2.4 Interfaces .................................................... 9 2.5 Relation to Other Protocols ................................... 9 2.6 Reliable Communication ........................................ 9 2.7 Connection Establishment and Clearing ........................…

Network Working Group J. Postel Request for Comments: 792 ISI September 1981 Updates: RFCs 777, 760 Updates: IENs 109, 128 INTERNET CONTROL MESSAGE PROTOCOL DARPA INTERNET PROGRAM PROTOCOL SPECIFICATION Introduction The Internet Protocol (IP) [1] is used for host-to-host datagram service in a system of interconnected networks called the Catenet [2]. The network connecting devices are called Gateways. These gateways communicate between themselves for control purposes via a Gateway to Gateway Protocol (GGP) [3,4]. Occasionally a gateway or destination host will communicate with a source host, for example, to report an error in datagram processing. For such purposes this protocol, the Internet Control Message Protocol (ICMP), is used. ICMP, uses the basic support of IP as if it were a higher level protocol, however, ICMP is actually an integral part…

RFC: 791 INTERNET PROTOCOL DARPA INTERNET PROGRAM PROTOCOL SPECIFICATION September 1981 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   September 1981 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 ................................... 9 2.2 Model of Operation ............................................ 5 2.3 Function Description .......................................... 7 2.4 Gateways ...................................................... 9 3. SPECIFICATION ................................................... 11 3.1 Internet Header Format ....................................... 11 3.2 Discussion ................................................... 23 3.3 Interfaces ................................................... 31 APPENDIX A: Examples & Scenarios ................................... 34 APPENDIX B: Data…

RFC 768 J. Postel ISI 28 August 1980 User Datagram Protocol ---------------------- Introduction ------------ This User Datagram Protocol (UDP) is defined to make available a datagram mode of packet-switched computer communication in the environment of an interconnected set of computer networks. This protocol assumes that the Internet Protocol (IP) [1] is used as the underlying protocol. This protocol provides a procedure for application programs to send messages to other programs with a minimum of protocol mechanism. The protocol is transaction oriented, and delivery and duplicate protection are not guaranteed. Applications requiring ordered reliable delivery of streams of data should use the Transmission Control Protocol (TCP) [2]. Format ------ 0 7 8 15 16 23 24 31 +--------+--------+--------+--------+ | Source | Destination | | Port | Port | +--------+--------+--------+--------+ | |…