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Local Computer Networks, 1991. Proceedings., 16th Conference on

Date 14-17 Oct. 1991

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Displaying Results 1 - 25 of 69
  • Proceedings. 16th Conference on Local Computer Networks (Cat. No.91TH0397-0)

    Publication Year: 1991
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    Freely Available from IEEE
  • Using infrared impulses to transmit data asynchronously

    Publication Year: 1991, Page(s):282 - 287
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    This paper presents a data transmission technique using infrared pulse modulation which differs from usual schemes such as FSK or bi-phase PPM. It is based on HDLC-like frames including the `bit stuffing' mechanism. HDLC is basically a synchronous transmission oriented protocol, used here however to transmit an asynchronous flow of characters. The automatically inserted `flags' maintain a `data ca... View full abstract»

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  • FDDI network availability analysis

    Publication Year: 1991, Page(s):24 - 33
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    Various FDDI network configurations are characterized and their availabilities evaluated. From these results it is concluded that an FDDI network backbone should be interconnected using dual attachment concentrators. This is essential for guaranteeing high availability. Furthermore, dual-homing configurations are required to maintain high availability of the path between end-stations and the backb... View full abstract»

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  • Analysis of CISC versus RISC microprocessors for FDDI network interfaces

    Publication Year: 1991, Page(s):485 - 493
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    In recent years, RISC manufacturers have focussed attention on the enhanced performance of RISC microprocessors in meeting high speed microprocessor requirements. FDDI has such needs at the network to host computer interface. This paper presents design alternatives for the network interface and a model that can be used to examine the achievable throughput assuming different CISC and RISC processor... View full abstract»

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  • A hybrid indoor data network with radio and wire: radio propagation measurements and performance evaluation in a Rayleigh channel

    Publication Year: 1991, Page(s):276 - 281
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    The authors propose a hybrid indoor data network system that uses radio as a transmission medium for the lower layer and uses conventional LAN for the upper, and its distributed dynamic channel assignment scheme in the 15th LCN and other conferences. In this paper indoor radio propagation measurements at 1.2 GHz are presented in order to develop a fading channel model. The system performance is an... View full abstract»

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  • Performance evaluation of FDDI-what about packet loss?

    Publication Year: 1991, Page(s):18 - 23
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    Recently, a discussion came up dealing with the frame copied indicator in the frame status sequence of FDDI. This indicator shows whether or not the destination has copied the frame and this way allows the sender to react in a proper way. However, in interconnected networks the destination node may represent a large number of destinations with different addresses making it difficult to check withi... View full abstract»

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  • TESLA as a tool of developing bridge protocols

    Publication Year: 1991, Page(s):148 - 157
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    In a distributed computing environment, a testbed is built to investigate topology learning behaviors of bridges for LAN interconnection. It is flexible to configure on any networked computing facility and thus serves as an environment for rapid prototyping of bridge systems. Unlike a pure simulator, the testbed employs distributed computing in itself so that the parallelism embedded in protocols ... View full abstract»

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  • Control of duplicate addresses for FDDI

    Publication Year: 1991, Page(s):473 - 484
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1132 KB)

    Duplicate station addresses can disrupt operation of a token ring. Failure symptoms include failure to initialize the ring (make a token), false re-initialization of the ring, and the inability of certain stations to communicate with other stations. These problems were recognized and some solutions for simple cases are included in the FDDI standards Additional cases result from common usage of sta... View full abstract»

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  • Performance modelling of LAN bridges and routers

    Publication Year: 1991, Page(s):554 - 561
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    Bridges and routers are used to interconnect local area networks (LANs). The performance of these devices is important since they can become bottlenecks in large multi-segment networks. Performance metrics and a test methodology for bridges and routers have not been standardized. Performance data reported by vendors is not applicable to the actual scenarios encountered in an operational network. H... View full abstract»

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  • Jitter accumulation in token ring UTP networks

    Publication Year: 1991, Page(s):52 - 66
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (900 KB)

    The paper discusses jitter accumulation in token ring unshielded twisted pair (UTP) networks. Topics of discussion include correlated jitter, near end crosstalk (NEXT), and the feasibility of supporting 100 m lobes of standard UTP (DIW) using two different types of active concentrators View full abstract»

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  • Priority-based dynamic access policies to WAN from LAN/MAN

    Publication Year: 1991, Page(s):214 - 222
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    The authors consider the integration problem of LAN/MAN traffic to WAN by ATM/SONET multiplexing. They propose separate buffers for voice and data to efficiently control the throughput of each traffic type. Transmission bandwidth is dynamically and adaptively shared between voice and data to guarantee grade of service (GOS) requirements for each traffic type. The authors propose two algorithms for... View full abstract»

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  • Optical-electrical interface for IR wireless Ethernet local area network

    Publication Year: 1991, Page(s):273 - 275
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    This paper deals with the implementation of an electrical-optical interface for data transmission among PCs, via wireless in-house IR radiation, using commercial and available devices. Data transmission is achieved using the CSMA/CD IEEE 802.3 standard. The main advantages of this system are lower costs (no cabling required), mobility and no interference with neighbor networks. These advantages, t... View full abstract»

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  • Conquering complexity: data networking trends as technology meets market reality

    Publication Year: 1991, Page(s):4 - 17
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    Small data networks are usually easy to maintain. However, the cost of support for growing networks can start to increase exponentially. If allowed to continue, additional network expansion comes up against a limit known as the complexity barrier. It then becomes too costly to add new network capabilities. The article discusses how today's data networks can more adequately deal with complexity usi... View full abstract»

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  • Distributing the Stuttgart Tetrahedron

    Publication Year: 1991, Page(s):185 - 194
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (688 KB)

    The paper describes the `Stuttgart Tetrahedron' and how it is distributed under the `ideal' campus situation. The need for knowledge sharing and cooperation between researchers in strategic fields is shown to be the main driving force for distributing such tetrahedrons over Germany and necessarily over Europe. The Stuttgart VBN projects and the MAN field trial are described within this context. Th... View full abstract»

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  • Performance study of the MetaRing with Gb/s links

    Publication Year: 1991, Page(s):137 - 147
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    MetaRing is a Gigabit/second local area network architecture based on a dual(bi-directional) optical fiber ring with spatial reuse mechanism. The paper uses simulation to study the performance of MetaRing in the buffer insertion mode with variable length packets. It shows through various delay-throughput curves the major performance aspects of the MetaRing architecture. The results indicate that t... View full abstract»

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  • A new protocol for efficient bandwidth distribution in integrated service networks

    Publication Year: 1991, Page(s):467 - 472
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    IEEE 802.5 token ring standard has been widely used in integrated service networks. Due to the nature of messages, preferences are usually given to voice packets in most implementations of 802.5 standard. Although such an approach is reasonable, it results in ill network resources utilization and inefficient bandwidth distributions among data and voice stations. The authors present a new protocol ... View full abstract»

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  • The multiple switch-connected token passing ring networks

    Publication Year: 1991, Page(s):544 - 553
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (828 KB)

    A pairwise switch-connection mechanism for interconnecting multiple token passing ring networks is proposed. The total number of internetwork packet store-and-forwards occurring at the bridges can be significantly reduced under the new switching method. A simple scheduling algorithm is developed to guarantee non-overlapped pairwise connection among the interconnected ring networks. Easy network ac... View full abstract»

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  • An evaluation of priority consistency in protocol architectures

    Publication Year: 1991, Page(s):386 - 398
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1108 KB)

    Workstations for digital audio and video applications must support predictable processing, presentation, and transmission of continuous media data while making efficient use of limited hardware resources. The authors present techniques for managing network resources and processing messages in a predictable fashion. Their solutions use a novel structure for the protocol processing software, and the... View full abstract»

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  • Reliability analysis of the FDDI token ring

    Publication Year: 1991, Page(s):41 - 51
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    The paper develops reliability models and derives closed-form results for network reliability and network mean time to failure, including both node and link failures, for a very popular high speed LAN, the FDDI (fiber distributed data interface). It then extends the results to composite measures of performance and reliability View full abstract»

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  • Temperature-related changes in dielectric constant and dissipation factor of insulations increase attenuation in data cables used in building plenums

    Publication Year: 1991, Page(s):74 - 79
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    Local area network performance can deteriorate when high temperatures cause cable attenuation to increase. This problem can be prevented by careful selection of insulating materials. Dissipation factor and dielectric constant for FEP, PVC, and ECTFE were measured at frequencies from 1 kHz to 300 MHz at 20°C and 60°C. Increases in values for these properties can be related to increases in c... View full abstract»

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  • A multiple-priority scheme for distributed queue dual bus networks

    Publication Year: 1991, Page(s):204 - 213
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    Studies have shown that earlier versions of the distributed queue dual bus (DQDB) exhibited asymmetric segment access delay under heavy loads. A bandwidth balancing (BWB) mechanism was subsequently adopted to improve the access delay characteristics of DQDB. This mechanism, however, does not effectively support multiple levels of priority that DQDB may need in order to provide new services to the ... View full abstract»

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  • Performance comparison of DQDB and FDDI for integrated networks

    Publication Year: 1991, Page(s):96 - 105
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    The performance of two high speed network protocols, IEEE 802.6 distributed queue dual bus MAN and fiber distributed data interface are compared based on their ability to support integrated traffic. The comparison includes the asynchronous priority characteristics of the two protocols as well as the performance characteristics of their isochronous service classes. In the integrated network conside... View full abstract»

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  • Experiences with IFS: a distributed image filing system

    Publication Year: 1991, Page(s):599 - 610
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (980 KB)

    The authors have designed and implemented a distributed image filing system. Users sitting at workstations can scan, store and retrieve images stored on optical disk at an image server. The system is built as a set of client and server processes performing specialized tasks. The system is network independent, in the sense that it runs on any of the local networks currently available on the market,... View full abstract»

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  • Interconnecting LANs and MANs to ATM

    Publication Year: 1991, Page(s):259 - 270
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (972 KB)

    One of the challenges in the interconnection of LANs and MANs to ATM is the support of connectionless traffic in the ATM network. Several solutions have been proposed. A popular strategy seems to be that of maintaining a `thin' (i.e. low bandwidth) VP (virtual path) between each pair of gateways, and of requesting more bandwidth whenever a burst comes in from the LAN or MAN. Unfortunately, this st... View full abstract»

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  • A partitioned implementation of the Xpress Transfer Protocol. I

    Publication Year: 1991, Page(s):301 - 309
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    This paper focuses on the practical aspects of implementing the Xpress Transfer Protocol (XTP). A strategy is proposed for partitioning XTP across host and off-board processors in a distributed system in which an existing XTP implementation is changed in a step-wise fashion to meet the system requirements. The architecture is described, and the XTP development strategy is presented. Finally, XTP p... View full abstract»

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