An experimental prototype of an IP router, interconnecting standard Ethernet LANs by means of ATM networks, is presented. The suite of ATM protocols up to the SAR sublayer has been implemented partially in hardware an...
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ISBN:
(纸本)0444818340
An experimental prototype of an IP router, interconnecting standard Ethernet LANs by means of ATM networks, is presented. The suite of ATM protocols up to the SAR sublayer has been implemented partially in hardware and partially in software. In particular, the physical layer is implemented in hardware with a data rate of 155.520 Mbps while the other functions are software based. The global throughput for this implementation can be up to 6-8 Mbps, fast enough for the considered context. An upgrade of the design is presented where most of the functions up to the AAL protocol are hardware based. The throughput of this upgraded architecture is expected to improve considerably up to several tens of Mbps.
Dynamic synchronous Transfer Mode (DTM) is a new protocol suite based on synchronous fast circuit switching. The DTM network is based on bandwidth reservation and supports dynamic reallocation of bandwidth. It is desi...
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ISBN:
(纸本)044482023X
Dynamic synchronous Transfer Mode (DTM) is a new protocol suite based on synchronous fast circuit switching. The DTM network is based on bandwidth reservation and supports dynamic reallocation of bandwidth. It is designed to support real-time multimedia applications and high-speed computer communication. DTM uses a novel medium-access technique and provides a multicast connection-oriented service. In this paper, the connection establishment in the DTM network is discussed and a scheme for fast connection establishment is presented. The scheme allows for fast set-up of channels which results in an efficient usage of the network's bandwidth and a short access delay for the user. Buffer handling and memory management implementations at a host interface supporting this scheme are also presented.
This paper presents the features of the BSS: Bus Structure Switching, which complies with the Asynchronous Transfer Mode (ATM) requirements. The main originality of this switch is supported by the sequential scan of t...
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ISBN:
(纸本)0444815120
This paper presents the features of the BSS: Bus Structure Switching, which complies with the Asynchronous Transfer Mode (ATM) requirements. The main originality of this switch is supported by the sequential scan of the N inputs. Each input may deliver at each time slot an information to one output among P, or to a designated group of outputs. The communication is performed through a bus structure. A BSS switch element is of the output - buffer type with no throughput degradation since internal contention is eliminated. This study deals with basic performance parameters (cell delay and cell loss probability) of the BSS switch under a uniform traffic pattern, to dimension the output buffet size.
With the advent of high speed packet networks capable of supporting integrated services, there is increasing scope for multi-party applications such as multi-media conferencing, file distribution, video distribution, ...
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ISBN:
(纸本)0444814817
With the advent of high speed packet networks capable of supporting integrated services, there is increasing scope for multi-party applications such as multi-media conferencing, file distribution, video distribution, real-time data collection and computer supported cooperative work. Such applications need to be properly supported by the network in order to encourage their development. This paper presents a layered framework offering the necessary support mechanisms at appropriate levels to make effective and efficient use of networking resources. Two aspects of multicast provision are then dealt with in more detail: first, multicast routing for networks of arbitrary topology and secondly, a flexible set of group management procedures.
Frame Relay is revealing itself as a popular interface far data communication across Wide Area networks. ATM is the transfer method of the future B-ISDN, which is expected to support any kind of service including data...
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ISBN:
(纸本)0444814817
Frame Relay is revealing itself as a popular interface far data communication across Wide Area networks. ATM is the transfer method of the future B-ISDN, which is expected to support any kind of service including data communications. As B-ISDN deployment will be gradual and Frame Relay provides a cheap and efficient access interface, it is envisaged that ATM will not replace Frame Relay immediately, and that both of them will coexist to access the B-ISDN. This paper attempts to identify the scenarios for interworking between Frame Relay and ATM. Possible approaches to give FR service over ATM are introduced, and several ATM Adaptation Layers are explored to find the most suitable to support it. Interworking procedures at the FR-B-ISDN border are also sketched for each of these AALs.
Issues in the, implementation of high performance communication systems for parallel computers are discussed with special reference to the networks of the INMOS T9000 and Meiko CS2.
ISBN:
(纸本)0444817913
Issues in the, implementation of high performance communication systems for parallel computers are discussed with special reference to the networks of the INMOS T9000 and Meiko CS2.
Multimedia communication, with its strong requirements for high speed, assured quality, and reliable networking, is stimulating a great research effort towards the development of real-time protocols. Some protocols of...
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ISBN:
(纸本)0444814817
Multimedia communication, with its strong requirements for high speed, assured quality, and reliable networking, is stimulating a great research effort towards the development of real-time protocols. Some protocols of this type have been proposed, which offer communication services with different levels of commitment in providing quality of service guarantees. In this paper we study the feasibility of an extended client interface that allows more flexibility in the client-network interactions. The proposed model improves the utilisation of network resources, and increases the network's capability to support multimedia traffic, while continuing to offer a guaranteed quality of service.
Two new service disciplines in an ATM Multiplexer or a Multiplexer based ATM switch for connectionless services are presented. Their main advantage is to avoid or minimize a fragmentation process that a frame undergoe...
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ISBN:
(纸本)0444815120
Two new service disciplines in an ATM Multiplexer or a Multiplexer based ATM switch for connectionless services are presented. Their main advantage is to avoid or minimize a fragmentation process that a frame undergoes when applying commonly used ATM Multiplexing disciplines. This is especially important when the data sources are applications running on Local Area networks and generating frames, and the Multiplexer is an access unit in the BISDN ATM based Public network used for a public LAN -WAN -LAN interconnection service. The disciplines proposed offer several advantages, namely they facilitate the reassembling of cells into frames and offer an overall better frame error rate performance, if similar strategies are carried out throughout the ATM network, when the network is lossy in terms of cells, and the cell loss tends to occur in bursts, as it is the case when by overloading, some buffers overflow. This is particularly likely to happen when the ATM network is operated not in connection oriented mode, or when resource allocation cannot be done effectively due to the impossibility to know in advance the bandwidth requirements of the connectionless sources, and where, as the case will be, one wants to obtain statistical gains in the network. This paper presents the new disciplines, simulate the performance against other disciplines already proposed for ATM Multiplexers, and compares their performance and the complexity for their hardware implementation.
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