Networking History Resources
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Lecture 10: Switching & Internetworking
Lecture 10: Switching & Internetworking CSE 123: Computer Networks Alex C. Snoeren HW 2 due WEDNESDAY Lecture 10 Overview ● Bridging & switching ◆ Spanning Tree ● Internet Protocol ◆ Service model ◆ Packet format CSE 123 – Lecture 10: Internetworking 2 Selective Forwarding ● Only rebroadcast a frame to the LAN where its destination resides ◆ If A sends packet to X, then bridge must forward frame ◆ If A sends packet to B, then bridge shouldn’t LAN 1 LAN 2 A W B X bridge C Y D Z CSE 123 – Lecture 9: Bridging & Switching 3 Forwarding Tables ● Need to know “destination” of frame ◆ Destination address in frame header (48bit in Ethernet) ● Need know which destinations are on which LANs ◆ One approach: statically configured by hand » Table, mapping address to output port (i.e. LAN) ◆ But we’d prefer something automatic and dynamic… ● Simple algorithm: Receive frame f on port q Lookup f.dest for output port /* know where to send it? */ If f.dest found then if output port is q then drop /* already delivered */ else forward f on output port; else flood f; /* forward on all ports but the one where frame arrived*/ CSE 123 – Lecture 9: Bridging & Switching 4 Learning Bridges ● Eliminate manual configuration by learning which addresses are on which LANs Host Port A 1 ● Basic approach B 1 ◆ If a frame arrives on a port, then associate its source C 1 address with that port D 1 ◆ As each host transmits, the table becomes accurate W 2 X 2 ● What if a node moves? Table aging Y 3 ◆ Associate a timestamp with each table entry Z 2 ◆ Refresh timestamp for each -
Wifi Direct Internetworking
WiFi Direct Internetworking António Teólo∗† Hervé Paulino João M. Lourenço ADEETC, Instituto Superior de NOVA LINCS, DI, NOVA LINCS, DI, Engenharia de Lisboa, Faculdade de Ciências e Tecnologia, Faculdade de Ciências e Tecnologia, Instituto Politécnico de Lisboa Universidade NOVA de Lisboa Universidade NOVA de Lisboa Portugal Portugal Portugal [email protected] [email protected] [email protected] ABSTRACT will enable WiFi communication range and speed even in cases of: We propose to interconnect mobile devices using WiFi-Direct. Hav- network infrastructure congestion, which may happen in highly ing that, it will be possible to interconnect multiple o-the-shelf crowded venues (such as sports and cultural events); or temporary, mobile devices, via WiFi, but without any supportive infrastructure. or permanent, absence of infrastructure, as may happen in remote This will pave the way for mobile autonomous collaborative sys- locations or disaster situations. tems that can operate in any conditions, like in disaster situations, WFD allows devices to form groups, with one of them, called in very crowded scenarios or in isolated areas. This work is relevant Group Owner (GO), acting as a soft access point for remaining since the WiFi-Direct specication, that works on groups of devices, group members. WFD oers node discovery, authentication, group does not tackle inter-group communication and existing research formation and message routing between nodes in the same group. solutions have strong limitations. However, WFD communication is very constrained, current imple- We have a two phase work plan. Our rst goal is to achieve mentations restrict group size 9 devices and none of these devices inter-group communication, i.e., enable the ecient interconnec- may be a member of more than one WFD group. -
Engineering of Computer Networking Protocols : an Historical Perspective Gregor V
Engineering of computer networking protocols : an historical perspective Gregor v. Bochmann University of Ottawa with thanks to Colin West and Dave Rayner http://www.site.uottawa.ca/~bochmann/talks/history.ppt McNaughton Lecture 24th Canadian Conference on Electrical and Computer Engineering Niagara Falls, May 2011 Gregor v. Bochmann, University of Ottawa 1 Approximate time line 1960: first high-level programming languages 1965: time sharing operating systems and interactive terminals 1970: first experimental computer networks 1975: X.25 networking standard, proprietary networking architectures, e.g. IBM’s SNA 1980: experimental Internet, OSI standardization started, Teletex (a kind of Web service, Telidon in Canada) 1985: Formal Description Techniques (FDTs) developed, experimental tools 1990: commercial SDL tools, beginning of public use of the Internet and Web 1995: Java released, wide use of the Internet, digital wireless telephony spreads – UML (universal modeling language) 2000: XML and Web Services 2005: beginning integration of wireless services with the Internet 2011: there we are . Gregor v. Bochmann, University of Ottawa 2 Computer communications in the 1970ies Remote access to servers User terminals Batch entry terminals Line multiplexing line speed: 300 bps Link protocols (with sequence numbering) Alternating bit protocol (1969) Bisync, SDLC (IBM) Gregor v. Bochmann, University of Ottawa 3 Computer communications in the 1970ies Computer networks ARPANET (USA): first long distance computer network – first trial in 1969 NPL network (UK): first LAN Cyclade (France): introduced IP service at the network layer – around 1972 Donald Davies, NPL Leonard Kleinrock, UCLA Louis Pouzin with ARPAnet node INRIA (France) Gregor v. Bochmann, University of Ottawa 4 Computer communications in the 1970ies Protocol standards First network protocol standard: X.25 Vendor networking architectures IBM (SNA), DEC, Honeywell, etc. -
Growth of the Internet
Growth of the Internet K. G. Coffman and A. M. Odlyzko AT&T Labs - Research [email protected], [email protected] Preliminary version, July 6, 2001 Abstract The Internet is the main cause of the recent explosion of activity in optical fiber telecommunica- tions. The high growth rates observed on the Internet, and the popular perception that growth rates were even higher, led to an upsurge in research, development, and investment in telecommunications. The telecom crash of 2000 occurred when investors realized that transmission capacity in place and under construction greatly exceeded actual traffic demand. This chapter discusses the growth of the Internet and compares it with that of other communication services. Internet traffic is growing, approximately doubling each year. There are reasonable arguments that it will continue to grow at this rate for the rest of this decade. If this happens, then in a few years, we may have a rough balance between supply and demand. Growth of the Internet K. G. Coffman and A. M. Odlyzko AT&T Labs - Research [email protected], [email protected] 1. Introduction Optical fiber communications was initially developed for the voice phone system. The feverish level of activity that we have experienced since the late 1990s, though, was caused primarily by the rapidly rising demand for Internet connectivity. The Internet has been growing at unprecedented rates. Moreover, because it is versatile and penetrates deeply into the economy, it is affecting all of society, and therefore has attracted inordinate amounts of public attention. The aim of this chapter is to summarize the current state of knowledge about the growth rates of the Internet, with special attention paid to the implications for fiber optic transmission. -
Bpml 30-Nov-77 08:14 42492 This File Is a Combination Ot Two Earlier Files
BPMl 30-Nov-77 08:14 42492 ,NLS DOCUMENTS AND PUBLICATIONS LIST - May 1977 This file is a combination ot two earlier files that included a listing of ARC publl~ations and documents through May 1977. It was compiled by Nina Zolotow. 1 AUGMENTATION RESEARCH CENTER PUBLICATIONS 2 Engelbart, D.C., "Special Considerations of tne Individual as a User, Generator, and RetrieVer of Information," Reprinted from American Documentation, Vol. 12, No.2, APrll, 1961 (XDOC··0585,) 3 Engelbart, D.C., "Augmenting Human Intellect: A Conceptual Framework," Stanford Research Inst1tute, Augmentation Research Center, AFOSR-322J, AD-289 5&5m October 1962 (XDOC--3906 J ) 4 Engelbart, D.C., "A Conceptual Framework for the Augmentation Of Man·s Intellect," VISTAS IN INFORMATION HANDLING, Howerton and Weeds (Editors), spartan BOOkS, Washington, D.C~, 1963, PP. 1-29 (XDOC-·0981,) 5 Engelbart, D.C., Sorenson, P.H., "Explorations in the Automation of Sensorimotor SkIll Tralnlng," stanford Research Institute, MAVTRADEVCEN 1517-1, AD 619 046, January 1965 (XDOC--11736,) 6 Engelbart, D.C., "Augmenting Human Intellect: Experiments, Concepts, and Posslbilltles--Summary Report," Stanford Research Institute, Au~mentatlon Research Center, March 1965 (XDOC--9691,) 7 EngliSh, W.K., Engelbart, D.C., HUddart, B., "Computer Aided DiSPlay Control--Final Report.," Stanford Research Institute, Augmentation Research Center, July 1965 (XDOC--9692,) 8 English, W.K., Engelbart, D.c., Berman, M.A., "DisplaY-Selection Techniques for Text ManiPulation," IEEE TRANSACTIONS ON HUMAN FACTORS IN ELECTRONICS, VOl. HFE~8, No.1, Pp. 5-15, March 1967 (XDOc--9694,) 9 Licklider, J.C.R., Taylor, R.W., Herbert, E., "The Computer as a CommuniCation Device," INTERNATIONAL SCIENCE AND TECHNOLOGY, NO. -
Computer Organization and Design
THIRD EDITION Computer Organization Design THE HARDWARE/SOFTWARE INTERFACE ACKNOWLEDGEMENTS Figures 1.9, 1.15 Courtesy of Intel. Computers in the Real World: Figure 1.11 Courtesy of Storage Technology Corp. Photo of “A Laotian villager,” courtesy of David Sanger. Figures 1.7.1, 1.7.2, 6.13.2 Courtesy of the Charles Babbage Institute, Photo of an “Indian villager,” property of Encore Software, Ltd., India. University of Minnesota Libraries, Minneapolis. Photos of “Block and students” and “a pop-up archival satellite tag,” Figures 1.7.3, 6.13.1, 6.13.3, 7.9.3, 8.11.2 Courtesy of IBM. courtesy of Professor Barbara Block. Photos by Scott Taylor. Figure 1.7.4 Courtesy of Cray Inc. Photos of “Professor Dawson and student” and “the Mica micromote,” courtesy of AP/World Wide Photos. Figure 1.7.5 Courtesy of Apple Computer, Inc. Photos of “images of pottery fragments” and “a computer reconstruc- Figure 1.7.6 Courtesy of the Computer History Museum. tion,” courtesy of Andrew Willis and David B. Cooper, Brown University, Figure 7.33 Courtesy of AMD. Division of Engineering. Figures 7.9.1, 7.9.2 Courtesy of Museum of Science, Boston. Photo of “the Eurostar TGV train,” by Jos van der Kolk. Figure 7.9.4 Courtesy of MIPS Technologies, Inc. Photo of “the interior of a Eurostar TGV cab,” by Andy Veitch. Figure 8.3 ©Peg Skorpinski. Photo of “firefighter Ken Whitten,” courtesy of World Economic Forum. Figure 8.11.1 Courtesy of the Computer Museum of America. Graphic of an “artificial retina,” © The San Francisco Chronicle. -
Multimedia, Internet, On-Line
Section IV: Multimedia, the Internet, and On-Line Services High-End Digital Video Applications Larry Amiot Electronic and Computing Technologies Division Argonne National Laboratory The emphasis of this paper is on the high-end applications Internet and Intranet that are driving digital video. The research with which I am involved at Argonne National Laboratory is not done on dig- The packet video networks which currently support many ital video per se, but rather on how the research applications applications such as file transfer, Mbone video (talking at the laboratory drive its requirements for digital video. The heads), and World Wide Web browsing are limiting for high- paper will define what digital video is, what some of its com- quality video because of the low throughput one can achieve ponents are, and then discuss a few applications that are dri- via the Internet or intranets. Examples of national packet ving the development of these components. The focus will be switched networks developed in the last several years include on what digital video means to individuals in the research the National Science Foundation Network (NSFNet). The and education community. Department of Energy had its own network called ESNET, and the National Aeronautics and Space Administration The Digital Video Environment (NASA) had a network as well. Recently, the NSFNet was de- commissioned, and commercial interests are now starting to In 1996, a group of people from several universities in the fill that void. Research and education communities are find- Midwest and from Argonne formed a Video Working Group. ing, however, that this new commercial Internet is too re- This body tried to define the areas of digital video of impor- stricting and does not meet their throughput requirements; it tance to their institutions. -
Design of a Lan-Based Voice Over Ip (Voip) Telephone System
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by KhartoumSpace DESIGN OF A LAN-BASED VOICE OVER IP (VOIP) TELEPHONE SYSTEM A thesis submitted to the University of Khartoum in partial fulfillment of the requirement for the degree of MSC in Communication & Information Systems BY HASSAN SULEIMAN ABDALLA OMER B.SC of Electrical Engineering (2000) University of Khartoum Supervisor Dr. MOHAMMED ALI HAMAD ABBAS Faculty of Engineering & Architecture Department of Electrical & Electronics Engineering SEPTEMBER 2009 ﺑﺴﻢ اﷲ اﻟﺮﺣﻤﻦ اﻟﺮﺣﻴﻢ ﺻﺪق اﷲ اﻟﻌﻈﻴﻢ iii ACKNOWLEDGEMENTS First I would like to thanks my supervisor Dr. Mohammed Ali Hamad Abbas, because this research project would not have been possible without his support and guidance; so I take this opportunity to offer him my gratitude for his patience ,support and guidance . Special thanks to the Department of Electrical and Electronics Engineering University Of Khartoum for their facilities, also I would like to convey my thanks to the staff member of MSc program for their help and to all my colleges in the MSc program. It is with great affection and appreciation that I acknowledge my indebtedness to my parents for their understanding & endless love. H.Suleiman iv Abstract The objective of this study was to design a program to transmit voice conversations over data network using the internet protocol –Voice Over IP (VOIP). JAVA programming language was used to design the client-server model, codec and socket interfaces. The design was fully explained as to its input, processing and output. The test of the designed voice over IP model was successful, although some delay in receiving the conversation was noticed. -
The Internet ! Based on Slides Originally Published by Thomas J
15-292 History of Computing The Internet ! Based on slides originally published by Thomas J. Cortina in 2004 for a course at Stony Brook University. Revised in 2013 by Thomas J. Cortina for a computing history course at Carnegie Mellon University. A Vision of Connecting the World – the Memex l Proposed by Vannevar Bush l first published in the essay "As We May Think" in Atlantic Monthly in 1945 and subsequently in Life Magazine. l "a device in which an individual stores all his books, records, and communications, and which is mechanized so that it may be consulted with exceeding speed and flexibility" l also indicated the idea that would become hypertext l Bush’s work was influential on all Internet pioneers The Memex The Impetus to Act l 1957 - U.S.S.R. launches Sputnik I into space l 1958 - U.S. Department of Defense responds by creating ARPA l Advanced Research Projects Agency l “mission is to maintain the technological superiority of the U.S. military” l “sponsoring revolutionary, high-payoff research that bridges the gap between fundamental discoveries and their military use.” l Name changed to DARPA (Defense) in 1972 ARPANET l The Advanced Research Projects Agency Network (ARPANET) was the world's first operational packet switching network. l Project launched in 1968. l Required development of IMPs (Interface Message Processors) by Bolt, Beranek and Newman (BBN) l IMPs would connect to each other over leased digital lines l IMPs would act as the interface to each individual host machine l Used packet switching concepts published by Leonard Kleinrock, most famous for his subsequent books on queuing theory Early work Baran (L) and Davies (R) l Paul Baran began working at the RAND corporation on secure communications technologies in 1959 l goal to enable a military communications network to withstand a nuclear attack. -
The Evolution of Internet Evidence 1
Name: Sam Kavande Rocha Enrollment: 2777582 Nombre del curso: Name of professor: Information technologies Tania Zertuche Module: Activity: 1 Evidence 1 Date: 8 / September / 2015 References: The evolution of Internet Evidence 1 1 Table of contents: Introduction Page 2 Topic explanation Page 2 to 3 Conclusions Page 4 Bibliography Page 5 references 2 Introduction: The Internet is evolving. The majority of end-users perceive this evolution in the form of changes and updates to the software and networked applications that they are familiar with, or with the arrival of entirely new applications that change the way they communicate, do business, entertain themselves, and so on. Evolution is a constant feature throughout the network Topic explanation: The history of the Internet begins with the development of electronic computers in the 1950s. Initial concepts of packet networking originated in several computer science laboratories in the United States, Great Britain, and France. The US Department of Defense awarded contracts as early as the 1960s for packet network systems, including the development of the ARPANET (which would become the first network to use the Internet Protocol.) The first message was sent over the ARPANET from computer science Professor Leonard Kleinrock's laboratory at University of California, Los Angeles (UCLA) to the second network node at Stanford Research Institute (SRI). Packet switching networks such as ARPANET, NPL network, CYCLADES, Merit Network, Tymnet, and Telnet, were developed in the late 1960s and early 1970s using a variety of communications protocols. Donald Davies was the first to put theory into practice by 3 designing a packet-switched network at the National Physics Laboratory in the UK, the first of its kind in the world and the cornerstone for UK research for almost two decades. -
The Implementation of Nls on a Minicomputer by James G
\ \ \ \ \ THE IMPLEMENTATION OF NLS ON A MINICOMPUTER BY JAMES G. MITCHELL CSL 73·3 AUGUST 1973 NIC #18941 This technical report covers the research performed at Xerox Palo Alto Research Center (PARC) for the period June 30, 1972 to July I, 1973 under Contract Number DAHCl5 72 C 0223 with the Advanced Research Projects Agency, Information Processing Techniques Office. The research covers initial studies and evaluation of transferring a large, display-oriented documentation system (the NLS system developed at Stanford Research Institute) to a minicomputer system and a protocol for accessing NLS over the ARPANET. The research reported herein was supported by the Advanced Research Projects Agency under Contract No. DAHCI5 72 C 0223, ARPA Order No. 2151, Program Code No. 2PIO. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the Advanced Research Projects Agency or the U.S. Government. XEROX PALO ALTO RESEARCH CENTER 3180 PORTER DRIVE/PALO ALTO/CALIFORNIA 94304 Xerox Palo Alto Research Center (PARC): PARC is a research facility of the Xerox Corporation. It is involved in research in the physical sciences, computer hardware and software systems and the computer sciences in general. These latter include computer architecture, interactive graphics, operating systems, programming research, and natural language understanding systems. The Computer Science Laboratory (CSL) of PARe currently numbers thirty technical and support staff. INTRODUCTION The ARPA contract reported herein concerns the development of an NLS-I ike [I] display-oriented text-editing system supporting multiple users on a minicomputer configuration. -
Internetworking and Layered Models
1 Internetworking and Layered Models The Internet today is a widespread information infrastructure, but it is inherently an insecure channel for sending messages. When a message (or packet) is sent from one Website to another, the data contained in the message are routed through a number of intermediate sites before reaching its destination. The Internet was designed to accom- modate heterogeneous platforms so that people who are using different computers and operating systems can communicate. The history of the Internet is complex and involves many aspects – technological, organisational and community. The Internet concept has been a big step along the path towards electronic commerce, information acquisition and community operations. Early ARPANET researchers accomplished the initial demonstrations of packet- switching technology. In the late 1970s, the growth of the Internet was recognised and subsequently a growth in the size of the interested research community was accompanied by an increased need for a coordination mechanism. The Defense Advanced Research Projects Agency (DARPA) then formed an International Cooperation Board (ICB) to coordinate activities with some European countries centered on packet satellite research, while the Internet Configuration Control Board (ICCB) assisted DARPA in managing Internet activity. In 1983, DARPA recognised that the continuing growth of the Internet community demanded a restructuring of coordination mechanisms. The ICCB was dis- banded and in its place the Internet Activities Board (IAB) was formed from the chairs of the Task Forces. The IAB revitalised the Internet Engineering Task Force (IETF) as a member of the IAB. By 1985, there was a tremendous growth in the more practical engineering side of the Internet.