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Network, IEEE

Issue 3 • Date July 1987

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Displaying Results 1 - 18 of 18
  • [Front cover]

    Page(s): c1
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  • [Front inside cover]

    Page(s): c2
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  • Contents

    Page(s): 1
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  • [Advertisements]

    Page(s): 2
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  • Guest editorial

    Page(s): 3 - 5
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    Local Area Networks (LANs) are a recent technology and are used for the high speed interconnection and networking of computers and terminals in a local environment. As LANs evolved, the need to maintain, troubleshoot, and characterize their performance also evolved. Test tools, measurement techniques, and simulators became necessary entities to achieve this objective. Focusing on this new technology and its application to measurements is extremely interesting and relevant because LAN test tools represent a state-of-the-art method to debug, troubleshoot, and evaluate local area networks and their performance. View full abstract»

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  • Application-level performance prediction tools for network-based svstems

    Page(s): 6 - 12
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    A description is given of a network simulation system that is used to monitor process-to-process efficiency in a special purpose network developed for real-time applications. The tool, which is called VISA (Visually Integrated System Analyzer), uses information about application-specific interactions to predict how well a network-based implementation of that application will perform. VISA is part of a larger collection of system-level engineering tools that are being developed under the CASE (Computer-Aided System Engineering) environment. The VISA approach partitions a graph-based application system into a set of interconnected network clusters, each cluster able to support up to 200 processing nodes, and can be used to determine if a particular network partitioning can support the requirements of the application graph. The nature of the applications that the VISA system supports is briefly discussed, as well as the system itself, along with a short example of its use, and how it is logically structured. The structure of the CASE environment is discussed, and it is shown how the VISA system is integrated into it. View full abstract»

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  • A distributed approach to lan monitoring using intelligent high performance monitors

    Page(s): 13 - 20
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    A summary of the local area network (LAN) environment and its characteristics is provided. The architecture of a decentralized monitoring system and the specifics of an implementation are presented. These monitors are intelligent in that they do not require specification of what the monitor should examine; the monitor simply receives every packet and learns the required information to provide a meaningful presentation of the LAN statistics. The monitor's design guarantees that every LAN packet will be processed regardless of the LAN traffic rate. The author's experience with this system in monitoring Ethernets and 10-Mb/s 802.3 LANs is reviewed, and the complementary use of bridges to support LAN maintenance is introduced. The benefits of this approach are summarized. The techniques used by this monitoring system are applicable to all IEEE Standard 802 LANs. View full abstract»

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  • Transport layer performance tools and measurement

    Page(s): 21 - 31
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    The function and design of software developed at the US National Bureau of Standards (NBS) to serve as a transport experiment control system (TECS) are discussed. The implementation of the TECS within a local area network testbed is described, and some limitations of TECS are discussed. The use of TECS to provide a performance evaluation of Intel's iNA-960 within the testbed discussed is demonstrated. View full abstract»

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  • A multipurpose, distributed lan traffic monitoring tool

    Page(s): 32 - 39
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    A description is given of a distributed monitoring system that comprises one or more high-speed hardware monitoring engines, which perform the network traffic sampling and do initial data reduction, and a set of software functions, which perform further data reduction and traffic analysis. The hardware monitoring engine monitors the wire itself, facilitating the detection of all traffic, not just traffic to or from known entities, The monitor communicates with a remote system, or host, running an integrated set of software functions and providing a user interface to these functions. Monitoring the wire itself allows the monitoring complexity to be off-loaded from all of the network entities being monitored to the hardware monitoring engines, thereby decreasing the cost of data collection software having to be built into all of the entities being monitored. This is especially advantageous in multivendor, multiprotocol environments, where it is not usually possible to require that each entity in the network implements the necessary data collection function. View full abstract»

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  • A master/slave monitor measurement technique for an operating ethernet network

    Page(s): 40 - 48
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    A performance measurement technique that is applicable to CSMA/CD-based local area networks, such as the Ethernet, is described. The protocol and its performance characteristics as they affect monitoring are reviewed. Existing monitoring techniques are examined. A master/slave monitor measurement technique and the functions and measurements that the monitor supports are presented. An experimental implementation of the monitoring technique is described. View full abstract»

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  • The IEEE network forum

    Page(s): 49 - 50
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  • Technology perspective

    Page(s): 51
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    Sometimes, I sit back and wonder where we are going. Especially in data networking. Why do we need it? There are, of course, simple applications like electronic mail and file transfer, or more complex special applications like Common Channel Interoffice Signalling and 800 service. But what will make data networking ubiquitous? Operations Systems, of course! I expect tremendous growth in Operations Systems in the next five years and beyond. Why? View full abstract»

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  • Information infrastructure

    Page(s): 52 - 53
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    The delivery of information where it is needed, when it is needed and in the form it is needed is among the most valuable functions that can be provided by an information infrastructure. Indeed, once the economy has become dependent on such functions, it is also strongly affected by the strengths and weaknesses of the technology underlying the infrastructure. Loss of power service, telephone service, access and use of roads and freeways, even for brief periods of time, serve as vivid reminders both of the utility and of the potential fragility of economic dependence on infrastructure. View full abstract»

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  • Open systems standards

    Page(s): 54 - 55
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    The muddle of alphabet soup of standards organizations generally leaves people quite bewildered. There are many activities involved in the standards development process both internationally and nationally. I will try to put the international scene into perspective in this issue. View full abstract»

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  • Advertiser's index

    Page(s): 55
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  • Conference calendar

    Page(s): 56
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  • [Back inside cover]

    Page(s): c3
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  • [Back cover]

    Page(s): c4
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Aims & Scope

IEEE Network covers topics which include: network protocols and architecture; protocol design and validation; communications software; network control, signaling and management; network implementation (LAN, MAN, WAN); and micro-to-host communications.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Xuemin (Sherman) Shen, PhD
Engineering University of Waterloo