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1995, Eighteenth Convention of Electrical and Electronics Engineers in Israel
AI
TechLAN is an experimental high-speed Asynchronous Transfer Mode (ATM) local area network designed to provide a low-cost sharing solution for ATM switch connections among users while ensuring local interconnection without disrupting traffic. It utilizes innovative Buffer Insertion Ring and Shared Bus Switch architectures to support Quality of Service (QoS) parameters crucial for a shared networking environment. The network supports various applications and traffic types, with modular components allowing easy expansion and performance analysis conducted through dedicated traffic generator and monitoring cards.
The paper begins with a discussion of current trends in networking and a historical reviews of past networking technologies some of which failed. This leads us to the discussion about what it takes for a new technology to succeed and what challanges we face in making the current dream of a seamless worldwide high-speed ATM network a reality. Issues in using ATM cells for very high speed applications are presented. Ensuring that the users beneet from ATM networks involves several other related disciplines. These are reviewed. 1 Trend: Networking is Critical Networking has become the most critical part of computing. Today, computers are used mostly for transferring information from one peripheral to another, from network to the disk, from disk to the video screen, from keyboard to the disk, and so on. Mail, le transfer, information browsing using World Wide Web, Gopher, and WAIS takes up more time of the computing resources than computing perse. Initially, when the computers were designed, the performance was measured by the add" instruction time. Today, it is the move" instruction that is the key to the perceived performance of a system. This means that the bus performance is more important than the arithmetic logical unit ALU performance. IIO performance is more important than the SPECmarks. There are several other reasons for communications and networking becoming critical. First, the users have been moving away from the computer. In the sixties, computer users went to computer rooms to use them. In the seventies, they moved to terminal rooms away from the the computer rooms. In the eighties, the users moved to their desktop. In the nineties, they are mobile and can beanywhere. This distance between the users and the computers has lead to a natural need for communication between the user and the computer or the user interface device which may b e a portable computer and the servers. Second, the system extent has been growing continuously. Up until eighties, the computers consisted of one node spread within 10 meters. In nineties, the systems consists of hundreds of nodes within a campus. The increasing extent leads to increasing needs for computing.
31st Annual Frontiers in Education Conference. Impact on Engineering and Science Education. Conference Proceedings (Cat. No.01CH37193), 2001
Special consideration was taken concerning the cabling and the planning of the physical and logical configuration of the classroom network, due to the need to run experiments using network equipment like routers and ATM switches. An important part of the laboratories is to reinforce the concepts acquired in the theoretical lectures and, for this reason, the experiments were planned for every network layer. Most of the experiments use software tools specifically developed for the experiments, like runtime libraries and simulators. Besides, the course material profits from tools developed for web distance learning training, including multimedia, on-line evaluation tests, chats and simulators. The laboratory has been running for three years and a new revision of the classrooms and of the experiments is being implemented.
IEEE Communications Magazine, 2000
T he last decade has witnessed tremendous productivity in the field of local area networks (LANs). The productivity has ranged from many different available commercial LANs to detailed technical analyses, performance evaluation models and simulation results. T h e need now arises for networks to teach students in university and engineers in industry how to build and design LANs. The purpose of this paper is to present the Ed-Net; a multi-protocol local area network for educational and design purposes. The network uses available VLSI chips that implement LAN protocols. The intelligent co-processors LAN controllers such as INTEL 82586 for the Ethernet and Western Digital WD 2840 for the token-passing are used. Also advanced encoder/decoder chips such as Seeq 8023 and Harris HD-6409 are utilized.
1999
Traditional methods of measuring network interface performance have been based on throughputsensitive benchmarks. However, the performance of an ever-increasing number of applications depends on the latency, and not on the throughput of the underlying communication network system. Experimental performance evaluation of latency and its constituent parts for high speed network interfaces of personal computers has not been studied in depth to date. We have developed performance evaluation methods that derive detailed PCI to ATM network interface latency results for personal computers, based on a combined software-hardware cooperation. Our methods address the seamless data collection of events that have six orders of magnitude di erence in their duration, and range from user level requests down to segmentation latencies for packets within the network interface. As a result, all steps which contribute to the total transmission latency have been accurately measured for a speci c network interface type. Experimental results derived with the new method are presented, and its adaptation to vendor-independent measurements is described. Our experience suggests that measuring network interface latency using our methods is entirely feasible with equipment normally found in digital design laboratories. Furthermore it may lead to a deep understanding of the underlying communication system, which would be di cult (if not impossible) to acquire only with throughput-sensitive benchmarks.
IBM Systems Journal, 2000
A new generation of networking requirements is fueling the growth of a cell-based communications technology known as the asynchronous transfer mode (ATM). ATM technology allows the integration of voice, video, traditional data, and other traffic types on a single network. ATM offers a unique opportunity to deploy the same standardized networking technology in both the wide-area and local-area environments. IBM has introduced a family of products that provides a complete ATM solution for customers. The products support ATM standards, allowing the products to interwork with devices from other vendors. This paper provides a tutorial on ATM technology and an overview of the IBM ATM product family. The IBM 8260 Intelligent SWitching Hub is described as a representative ATM product. T he past few years have brought rapid growth to the Internet and a variety of private online computer services. Usenet and the World Wide Web have attracted a new community of casual network users. Increasing interest in personal videoconferencing, entertainment on demand, remote robotics, intelligent transportation systems, and other applications is placing new demands on communication networks. There has been a parallel growth in the popularity of multimedia computing, driven in part by the development of CD-ROM technology. Users increasingly expect the same high-quality multimedia service across a network as they receive locally. A proposed new communications infrastructure, known as the "information superhighway," is aimed at meeting these requirements. The concept of the superhighway is receiving wide attention in the press and by governmental organizations.
Conference on Frontiers in Education, 2002
This paper describes a set of new laboratory experiments developed for the senior level undergraduate networking course at the School of Electrical and Computer Engineering, Purdue University. These experiments differ from existing networking experiments in that they emphasize the understanding of the dynamics of network protocols in addition to their applications, which makes them more suitable for ECE curricula. Students
The first networks were time-sharing networks that used mainframes and attached terminals. Such environments were implemented by both IBM's Systems Network Architecture (SNA) and Digital's network architecture.
ITRE 2005. 3rd International Conference on Information Technology: Research and Education, 2005., 2005
The project, "Advanced Technologies and Applications of Next Generation Information Communication Networb," is a four-year, multidisciplinary research project sponsored by the Ministry of Education, RO.C., under the "Program ror Promoting Academic Excellence of Universities" The project started in January 2000 and completed in March 2004. In this paper, we give an overview of the project and highlight some of the major achievements. Index Terms-high-speed switch, wireless network, middleware, security, multimodal retrieval, digital learning and society
Microprocessing and Microprogramming, 1995
This paper deals with an experimental network application. As an example, an environment with on screen display of low density information is selected. Such an environment can be found in hospitals where patients have to be guided from one place to another, as well as in many other situations, like airports. The method used is a fiber based 20 Mbit/set network. In order to have a homogeneous structure transputer links are used throughout. Both, packet oriented inter processor communications and low level bit streams for the video frames, can coexist over these links. Uniformity in the physical layer [l] ensures maximum reliability and flexibility. With the usage of transputer links, fault detection in this application is inherent. The overall design is a highly distributed and low cost solution. Interfaces to standard networks are easily available.
European Transactions on Telecommunications, 1991
ABSTRACT The objectives and the early technical results of a project for the realization of an ATM local network testbed are described. The aim of the project is to realize a flexible experimentation environment to investigate the critical issues related to the introduction of ATM techniques in the network, including signalling, interworking and service support, in addition to the basic switching technology. After presenting the general structure and the solutions adopted for the testbed, the paper describes the main characteristics of its building blocks currently under development: the switching node with its ATM switching fabric and control units, the access network with the related interfaces and protocols, the customer equipment composed by ATM workstations, ATM terminal adaptors and LAN gateways, the interworking unit connecting the testbed to the telephone network. Finally the resources allocation and policing functions adopted are also discussed.
The Computer Network Laboratory of Computer Science department in Tsinghua University provides experimental environment for undergraduate computer network serial courses offered by CS Dept. In order to meet the demand of different elective students, we combed experimental teaching system of computer network serial courses, then designed and implemented a remote network laboratory supported multi-level network practice. We mainly deployed three series of experimental system: Virtual Network Experiment System based on commercial network equipment, Network Protocols Experiment System named NetRiver and IPv4/IPv6 Transition Technologies Experiment System based on 4over6 tunneling technology. With the help of our network laboratory, the following goals can be achieved: 1) Remote. Students can access experimental environment from classroom, dormitory and etc.; 2) Multi-level. Experimental contents include both network principle and commercial realization, include both classical sliding window protocol, IPv4 or IPv6 data transceiver protocol, IPv4 or IPv6 data forwarding protocol, routing protocol and up-to-date IPv4/IPv6 Transition Technologies. Every network course can construct experimental content by combination of them; 3) Up-to-date. We introduced the latest technology in the field of computer network research, such as IPv6 network protocol and 4over6 tunneling technologies.
This paper reviews the complex system implemented for teaching the network design and management topics, taught at Vilnius University. The special attention to sustain the practical skills is foreseen in these courses. The set of training tools, blending i) the emulators, ii) the real in-class lab and iii) the remote online laboratories, is deployed with the aim to expand advantages of interactive teaching. These tools as well as their benefits and limitations in teaching process are discussed in this paper.
2007
This paper aims to show the benefits and the experiences of ISABEL application ??. The aim of ISABEL is to assess the benefits of New Distributed Multimedia Applications using Integrated Broadband Communications (IBC) to support modern cooperative services. In contrast to single user computer applications, distributed collaborative systems consists of both the interconnection technology and the people who are interconnected. ISABEL application has been developed inside ISABEL (I2001) and IBER (RACE 93117) projects, to demonstrate the real usage of ATM technology in two different fields: 1. The first one is a particular configuration of the ISABEL application specially devoted to offer computer support distance learning facilities. This Tele Education Application is developed in order to allow two types of tele-teaching. One oriented to individual training and the second oriented to support the real time remote distribution of a conference between big auditoriums. 2. The second is devoted to provide an advanced distributed multimedia application in the field of Computer Support Cooperative Work (CSCW). This application allows users to maintain computer support conference in order to exchange information, edit documents or distribute special presentations. This paper is devoted to summarize the application functionality and the main usage experiences in the filed of tele-education.
2010
The conference platform allowed live presentations by several presenters from different locations, with the audio, video and PowerPoint presentations transmitted to attendees throughout the internet, even on dial up connections. Attendees were able to ask both audio and written questions in a chat room format, and presenters could mark up their slides as they deem fit • The live audio presentations were also recorded and distributed to participants along with the power points presentations and paper manuscripts within the conference DVD. The conference organizers and we are confident that you will find the papers included in this book interesting and useful.
ICC 91 International Conference on Communications Conference Record
Bellcore is assembling an experimental research prototype for investigation of the end-to-end integration of broadband networks, multimedia terminals, and potential services and applications. The testbed includes an ATM-based exchange network prototype, adaptors to MANs, LANs, and terminals, a Broadband ISDN network termination for should a public broadband network and customer networks and equipment work together?", with implications for signaling, network services architecture, and the division of functionality between networks and terminals. A third question is "Can an ATM-based network support the whole range of future communications requirements?" From these questions we can derive a long list of challenges, including the following: a multi-terminal environment, and experimental terminals. The capabilities of the prototype will be stressed by services including multimedia, multipoint connections, connectionless data service, multimedia teleconferencing, adaptable-rate video, and video on demand. The testbed is intended to have impacts on services definition, signaling standards, and network software, and offer insights and technology to broadband field trials.
1994
Using the Asynchronous Transfer Mode (ATM) network infrastructure of the AURORA Gigabit Testbed §, we were able to carry out a trial of interactive distance learning. The trial used teleconferencing hardware which converts NTSC television and audio signals to and from ATM cells. This hardware connected the Bellcore VideoWindow(TM) with other apparatus to create a realistic two-way interaction. In our trial, the interaction was between teams of undergraduate computer science students and researchers at Bellcore, and was used to support work by these students on advanced laboratory projects for a course.
European Transactions on Telecommunications, 1991
An experimental ATM switching node being developed by CSELT in the framework of CNR PFT is described. The node is built around a self-routing buffered multistage switching network based on a single type of integrated component. Each port of the network is connected to a packet processor which is in charge of interfacing with external ATM flows at 150 Mbit/s and of dealing with the ATM layer protocols. A distributed control structure is implemented, together with a software architecture which permits a rapid and easy introduction and testing of new services by abstracting system resources and defining a forma1 interface to application software. The access network developed within the ATM testbed is based on an active star shaped B-NT which controls the access of the customer equipment to the local exchange and performs statistical multiplexing of the generated information flows. The terminals and interworking unit being provided in the ATM testbed have also been described, to give a picture of the services which will be considered in the experimentations. 1.1) which wilI comprise a switching node, an access (*) Presented at the CNR Seminar: <<Broadband Communication Networks and Services~ (Roma. October 3 5 3 I, 1990). By courtesy of CNR Telecommunication Project.
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