Proceedings of 19th Conference on Local Computer Networks

2-5 Oct. 1994

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Displaying Results 1 - 25 of 50
  • An empirical study of packet voice distribution over a campus-wide network

    Publication Year: 1994, Page(s):456 - 465
    Cited by:  Papers (3)  |  Patents (8)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (880 KB)

    Support for digital audio and video streams (continuous media) in desktop computers is increasingly widespread and hence the demand for high-quality network distribution of continuous media streams is growing. While current local area and campus-wide networks have high-bandwidth links and powerful routers, the delay sensitivities of continuous media streams pose a challenge. Our paper provides an ... View full abstract»

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  • BATS: a high-performance transport system for broadband applications

    Publication Year: 1994, Page(s):448 - 455
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (569 KB)

    Broadband applications require high-performance networking facilities and the guarantee of quality of service (QOS). Existing transport protocols are incapable of providing QOS. Should a transport entity result in insufficient processing bandwidth, the layer becomes a performance bottleneck and can no longer guarantee QOS. In addition, the problem of how transfer rates can be determined in the imp... View full abstract»

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  • LAN-based office for the enterprise, a case study

    Publication Year: 1994, Page(s):440 - 447
    Cited by:  Patents (30)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (625 KB)

    Describes an enterprise architecture for LAN-based office applications developed for the IBM Corporation. The LAN-based office applications include Lotus Notes, E-Mail gateways to the host, a host to LAN calendar system, word processors, graphics applications, and spreadsheet applications. The focus of the article is on the architecture of this LAN-based office system over IBM's wide area networks... View full abstract»

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  • Limited effects of finite storage on a beneficial file migration policy

    Publication Year: 1994, Page(s):432 - 439
    Cited by:  Papers (4)  |  Patents (9)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (721 KB)

    With the availability of high-speed local-area networks, file migration becomes an attractive option in a distributed file system. However, certain limitations may exist which restrict the movement of files. One such limitation is that storage space is finite and thus, storage sites (file servers) can only store a limited number of files. We use simulation to show that for a homogeneous distribute... View full abstract»

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  • Capacity planning of LAN using network management

    Publication Year: 1994, Page(s):425 - 430
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (482 KB)

    Most research on network management concentrates on technical issues. We discuss the possibility of using a network management system as an integrated environment for capacity planning of local area networks. The paper gives an overview of network management systems and relevance to capacity planning, and this also looks into the capabilities of the current network management frameworks of Interne... View full abstract»

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  • Network management platform approach and its application-KView II

    Publication Year: 1994, Page(s):417 - 424
    Cited by:  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (687 KB)

    The rapid adoption of the SNMP standard is creating complex new competitive challenges for the traditional providers of LAN and internet management. An emerging strategy among some system and network vendors, is the adaptation of a platform approach to develop custom applications. Network management platform provides an environment in which network management software can be written quickly, and i... View full abstract»

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  • Total systems management in open architecture provisioning systems

    Publication Year: 1994, Page(s):411 - 416
    Cited by:  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (611 KB)

    A growing challenge in the transition of telecommunications provisioning systems from a closed architecture to a distributed open architecture is the need for effective system management tools that encompass not only network management, but also application management functionality. Networking the various provisioning system components resulted in a heterogeneous multivendor environment. At the ti... View full abstract»

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  • Network management's impact on managed networks

    Publication Year: 1994, Page(s):404 - 410
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (462 KB)

    Network management, when conducted in-band, adds traffic load to the managed network. Sometimes it is hard to tell how much traffic will result from network management. SNMP-based management stations can behave in surprising ways. Direct measurement of this traffic is needed, but needs to be done carefully. In the case studied, network management creates a significant, but tolerable amount of traf... View full abstract»

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  • Performance analysis of multiple priorities on token ring LANs to support multimedia

    Publication Year: 1994, Page(s):387 - 401
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (757 KB)

    Transporting multimedia traffic is becoming an essential requirement for communications networks. Unlike data traffic, multimedia traffic has strict demands on latency, throughput, jitter, and bandwidth. This paper demonstrates the capabilities of the currently available 16-Mbps token ring to simultaneously carry data and multimedia traffic. Experimental data and simulation results that show the e... View full abstract»

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  • Multimedia delivery on demand: capacity analysis and implications

    Publication Year: 1994, Page(s):380 - 386
    Cited by:  Papers (11)  |  Patents (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (501 KB)

    CATV networks are targeted to provide multimedia services to the home. This paper presents a simulation model aimed at evaluating the capacity of CATV networks. The model is based on the user profile, the service discipline and the CATV bandwidth. The issues addressed include the number of users supported by a single broadcast CATV-tree, the probability of accepting a request for multimedia servic... View full abstract»

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  • Priority communication schemes on local area networks for multimedia traffic

    Publication Year: 1994, Page(s):372 - 379
    Cited by:  Papers (6)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    We address the issues related to the delivery of multimedia streams on local area networks. Multimedia integrates voice and video along with text and images into existing systems. Traditionally, local area networks were designed to handle regular data traffic which are bursty in nature and for which variable delay is acceptable. Multimedia traffic, on the other hand, requires constant delay in add... View full abstract»

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  • Quality and performance of a desktop video conferencing system in the network of interconnected LANs

    Publication Year: 1994, Page(s):365 - 371
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (597 KB)

    We describe the results obtained when using a desktop videoconferencing system for distance learning and, at the same time, doing measurements about its performance. The system hardware is based on a PC with a LAN network controller, and a compression card implementing the CCITT H.261 algorithm. Our network environment consists of a campus network (Ethernets connected with routers and bridges) and... View full abstract»

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  • On multipoint control units for videoconferencing

    Publication Year: 1994, Page(s):356 - 364
    Cited by:  Papers (19)  |  Patents (34)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (665 KB)

    This paper examines the issues involved in the design of conference servers that support multiparty, multimedia conferences. These servers, called multipoint control units (MCUs) in the telephony world, coordinate the distribution of audio, video, and data streams amongst the multiple participants in a videoconference. The MCU is responsible for the processing of video and audio so that a conferen... View full abstract»

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  • Bandwidth management for ATM-based LANs

    Publication Year: 1994, Page(s):345 - 353
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (658 KB)

    In this paper the bandwidth assignment criteria, well suited in ATM LANs environments, have been extensively examined. In particular. After a discussion of the various schemes, we analyzed the bandwidth advertising criterion both by analytical methods and simulation. The cell loss and packet loss probability have been evaluated as a function of the usual network parameters (number of users, packet... View full abstract»

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  • Exposed buffering and sub-datagram flow control for ATM LANs

    Publication Year: 1994, Page(s):324 - 334
    Cited by:  Papers (3)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (1079 KB)

    We implemented an ATM network interface featuring two novel techniques: exposed buffering and subdatagram flow control. Exposed buffering allows applications to send or receive data from buffers shared with the network interface, thereby avoiding the latency of data copying or VM manipulations. Separate buffer areas maintain user privacy. Sub-datagram flow control uses feedback from the receiver t... View full abstract»

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  • Performance characteristics of end-stations in an ATM network as viewed for applications and network

    Publication Year: 1994, Page(s):316 - 323
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (658 KB)

    Traffic shaping at a (traffic) source station as a prominent congestion control solution in ATM networks. The "leaky bucket" scheme in conjunction with a cell spacer is an extensively studied and used mechanism for such a traffic shaping. By dimensioning the leaky bucket and spacer parameters, a source station attempts to regulate the behavior of its own traffic in order to conform to a "good beha... View full abstract»

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  • Implementing traffic shaping

    Publication Year: 1994, Page(s):307 - 314
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (810 KB)

    Traffic shaping is important in ATM networks, especially those that are interconnected or provide service guarantees. We examine what shaping may be considered ideal, and what is attainable under the constraints of transmission systems and cost. We justify the use of FCFS multiplexing of multiple single-stream shaper outputs as a performance reference for multi-stream shapers, but also point out s... View full abstract»

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  • Analysis of a threshold priority queueing system with applications to ATM

    Publication Year: 1994, Page(s):298 - 306
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (519 KB)

    A queueing model with two finite-size buffers, a single constant rate server using a serving strategy based on buffer thresholds is studied. Exact relationships for buffer size, overflow probabilities, and queueing delay are obtained. The queueing model is very general, and an application in ATM switching is described. The results are presented in-graphs that are useful in selecting a threshold pa... View full abstract»

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  • An overview of the pipelined common buffer architecture (PCBA) for memory based packet/cell switching systems

    Publication Year: 1994, Page(s):288 - 297
    Cited by:  Papers (1)  |  Patents (11)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (954 KB)

    A pipelined common buffer architecture (PCBA) is proposed for memory based switching systems. Unlike previously proposed shared-memory switching system, the PCBA is suitable for prioritized and multicast (without multiple memory write) traffic for both fixed length and variable length cell/packet. Therefore, switching among ATM traffic and existing LAN can be accomplished. The PCBA can route both ... View full abstract»

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  • Moving ATM closer to multimedia applications

    Publication Year: 1994, Page(s):278 - 287
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (813 KB)

    Enterprise serving with client-server as the underlying computing paradigm has become the computing model for organizations. In enterprise serving, an interconnected set of specialized and heterogeneous servers provide the computational and storage needs of client workstations, all in a transparent fashion. Asynchronous transfer mode (ATM) has the promise of capturing the total network upon which ... View full abstract»

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  • Performance of circuit switched LANs under different traffic conditions

    Publication Year: 1994, Page(s):266 - 276
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (868 KB)

    Switched LANs are become more widely used because they can provide a higher bandwidth than LANs based on shared media. Examples of packet switched LANs include HIPPI, and switched FDDI and Ethernet. A number of studies have evaluated the performance of HIPPI networks, making simplifying assumptions about both the network and the traffic load. In this paper we present the results of a simulation st... View full abstract»

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  • Multimedia communication networking architecture model for high speed network

    Publication Year: 1994, Page(s):257 - 265
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (947 KB)

    This paper describes and discusses the modeling of multimedia communication networking architecture suitable to high speed networks such as LAN, B-ISDN, etc. for the flexible management and rapid introduction of services. In this model, the applications are deployed in units of software building blocks called group call server, service control server, resource management server and client agent. E... View full abstract»

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  • Interconnection of large-scale LANs via a two-stage switching hub for multimedia applications

    Publication Year: 1994, Page(s):249 - 256
    Cited by:  Patents (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    As broadband multimedia applications to the desk top are becoming popular today, the high-speed bandwidth demand from a single user will occupy large shares of the LAN's channel capacity. Therefore, the evolution of LAN technologies has shifted from shared to dedicated media. More and more LANs are being installed and their interconnection will require parallel switching techniques such as a high-... View full abstract»

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  • Emerging trends-Full-duplex and the switched LAN

    Publication Year: 1994, Page(s):242 - 248
    Cited by:  Papers (1)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (543 KB)

    Ethernet, token-ring, and FDDI are well established protocols for regulating the access to a common transmission medium among a large number of stations. All of the attached stations share this common medium and its bandwidth. Sharing of a common medium reduces the bandwidth that is available to an individual station. To increase bandwidth to the end user, emerging LAN topologies are departing fro... View full abstract»

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  • The Ethernet capture effect: analysis and solution

    Publication Year: 1994, Page(s):228 - 240
    Cited by:  Papers (46)  |  Patents (7)
    Request permission for reuse | Click to expandAbstract | PDF file iconPDF (1241 KB)

    We analyze the behavior of the Ethernet in networks with a small number of active stations, and describe what is known as the Ethernet capture effect. Where a station transmits consecutive packets exclusively for a prolonged period despite other stations contending for access. The capture effect causes transient unfairness, which results in substantial performance degradation. We report measuremen... View full abstract»

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