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[1991] Proceedings 16th Conference on Local Computer Networks最新文献

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Replication management in large networks 大型网络中的复制管理
[1991] Proceedings 16th Conference on Local Computer Networks Pub Date : 1991-10-14 DOI: 10.1109/LCN.1991.208116
Bernd Freisleben, H. Koch, Oliver E. Theel
{"title":"Replication management in large networks","authors":"Bernd Freisleben, H. Koch, Oliver E. Theel","doi":"10.1109/LCN.1991.208116","DOIUrl":"https://doi.org/10.1109/LCN.1991.208116","url":null,"abstract":"The replication of data objects in a large computer network is a difficult task which cannot be approached by simply employing the techniques used in small networks, because the high replication factors possible raise new issues which must be addressed. The paper presents a solution to the problem of managing replicas in a large scale environment. The solution is based on a multi-level quorum algorithm for maintaining the consistency of replicas, a probabilistic addressing mechanism for efficiently locating replicas in the system and an efficient scheme for handling dynamic changes in the number of replicas. The feasibility of this approach is demonstrated by presenting performance measurements in a simulated network.<<ETX>>","PeriodicalId":163373,"journal":{"name":"[1991] Proceedings 16th Conference on Local Computer Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129173782","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Optical-electrical interface for IR wireless Ethernet local area network 红外无线以太网局域网的光电接口
[1991] Proceedings 16th Conference on Local Computer Networks Pub Date : 1991-10-14 DOI: 10.1109/LCN.1991.208074
A. Santamaria, M. J. Betancor, F. J. Gabiola, F. J. López-Hernández
{"title":"Optical-electrical interface for IR wireless Ethernet local area network","authors":"A. Santamaria, M. J. Betancor, F. J. Gabiola, F. J. López-Hernández","doi":"10.1109/LCN.1991.208074","DOIUrl":"https://doi.org/10.1109/LCN.1991.208074","url":null,"abstract":"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, together with the development in optoelectronic components, allow high bit rate wireless systems to be obtained with a low cost.<<ETX>>","PeriodicalId":163373,"journal":{"name":"[1991] Proceedings 16th Conference on Local Computer Networks","volume":"88 24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126316635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
High-speed optical workstation network 高速光工作站网络
[1991] Proceedings 16th Conference on Local Computer Networks Pub Date : 1991-10-14 DOI: 10.1109/LCN.1991.208104
K. Ohno, Michinori Masuda, Yoshinori Watanabe, H. Mizuno, T. Wada, H. Asano
{"title":"High-speed optical workstation network","authors":"K. Ohno, Michinori Masuda, Yoshinori Watanabe, H. Mizuno, T. Wada, H. Asano","doi":"10.1109/LCN.1991.208104","DOIUrl":"https://doi.org/10.1109/LCN.1991.208104","url":null,"abstract":"A high-speed workstation network system which interconnects distributed workstations and servers through a 100 Mbps optical LAN employing the OSI protocol is developed. The network throughput is maximized by employing a newly developed intelligent high-speed network controller consisted of a 100 Mbps token-ring processor(TRP) and 32-bit MPU which executes all the 7-layered OSI protocol. The remote retrieval capability of database of the system is theoretically confirmed and is experimentally proved.<<ETX>>","PeriodicalId":163373,"journal":{"name":"[1991] Proceedings 16th Conference on Local Computer Networks","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114602804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A hybrid indoor data network with radio and wire: radio propagation measurements and performance evaluation in a Rayleigh channel 无线电和有线混合室内数据网络:瑞利信道中的无线电传播测量和性能评估
[1991] Proceedings 16th Conference on Local Computer Networks Pub Date : 1991-10-14 DOI: 10.1109/LCN.1991.208075
H. Shigeno, K. Arai, Teruo Yokoyama, Y. Matsushita
{"title":"A hybrid indoor data network with radio and wire: radio propagation measurements and performance evaluation in a Rayleigh channel","authors":"H. Shigeno, K. Arai, Teruo Yokoyama, Y. Matsushita","doi":"10.1109/LCN.1991.208075","DOIUrl":"https://doi.org/10.1109/LCN.1991.208075","url":null,"abstract":"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 analyzed through computer simulations based on the fading channel model led from the propagation measurements. They adopt the following parameters: the number of radio terminals, the number of channels assigned to each base station, and the volume of traffic in the lower network. The results show that one can reduce the number of channels assigned to each base station without loss of performance under the condition that 10 Mbps CSMA/CD network is used as the upper layer, and 32 Kbps CSMA packet radio network is used as the lower.<<ETX>>","PeriodicalId":163373,"journal":{"name":"[1991] Proceedings 16th Conference on Local Computer Networks","volume":"517 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116237495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Interconnecting LANs and MANs to ATM 将局域网和城域网互连到ATM
[1991] Proceedings 16th Conference on Local Computer Networks Pub Date : 1991-10-14 DOI: 10.1109/LCN.1991.208072
M. Gerla, T. Tai, J. Monteiro, G. Gallassi
{"title":"Interconnecting LANs and MANs to ATM","authors":"M. Gerla, T. Tai, J. Monteiro, G. Gallassi","doi":"10.1109/LCN.1991.208072","DOIUrl":"https://doi.org/10.1109/LCN.1991.208072","url":null,"abstract":"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 strategy places a heavy burden on the ATM control processors; furthermore, it is overly conservative in the use of bandwidth. An alternative solution is proposed: on-the-fly transmission of bursts, without prior bandwidth reservation. The key conditions for this scheme to work are the use of the CLP (cell loss priority) bit, and the knowledge of available bandwidth on the path through 'bandwidth advertising'. An 'on-the-fly' strategy for connectionless traffic is described and is compared with a bandwidth renegotiation strategy.<<ETX>>","PeriodicalId":163373,"journal":{"name":"[1991] Proceedings 16th Conference on Local Computer Networks","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115809172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Network management using database discovery tools 使用数据库发现工具进行网络管理
[1991] Proceedings 16th Conference on Local Computer Networks Pub Date : 1991-10-14 DOI: 10.1109/LCN.1991.208090
M. Gerla, Ying-Dar Lin
{"title":"Network management using database discovery tools","authors":"M. Gerla, Ying-Dar Lin","doi":"10.1109/LCN.1991.208090","DOIUrl":"https://doi.org/10.1109/LCN.1991.208090","url":null,"abstract":"As the volume of network traffic increases due to the proliferation of distributed systems and the growth of real-time applications, a good understanding of traffic distribution and patterns becomes critical in network control and performance management. The authors upgrade the facilities of network management from traditional file systems to database and knowledge base systems and apply machine learning techniques to discover traffic patterns which are difficult to discern by human operators among a large volume of measurements. An experiment on interconnected LANs is conducted where some interesting patterns are found. The results show a strong traffic locality and some cyclic traffic patterns. The discovered rule base can describe the traffic distribution and patterns which need to be captured for any sophisticated performance management. The experiment has shown the high applicability of induction techniques to network management.<<ETX>>","PeriodicalId":163373,"journal":{"name":"[1991] Proceedings 16th Conference on Local Computer Networks","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130315598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
On performance characteristics of LAN interfaces with PING/PONG buffers 带PING/PONG缓冲的局域网接口性能特性研究
[1991] Proceedings 16th Conference on Local Computer Networks Pub Date : 1991-10-14 DOI: 10.1109/LCN.1991.208109
R. O. Onvural
{"title":"On performance characteristics of LAN interfaces with PING/PONG buffers","authors":"R. O. Onvural","doi":"10.1109/LCN.1991.208109","DOIUrl":"https://doi.org/10.1109/LCN.1991.208109","url":null,"abstract":"The authors consider a front end system consisting of a number of source stations generating LAN traffic; a queue to accommodate the transmission delays; and a number of ping/pong buffers, one for each LAN connection, served by the internal bus of the front-end processor. An incoming frame segment at a front end interface is assumed to be lost if there is no buffer available to store the segment. An algorithm is developed and used to investigate the performance characteristics of the ping/pong buffering scheme.<<ETX>>","PeriodicalId":163373,"journal":{"name":"[1991] Proceedings 16th Conference on Local Computer Networks","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121338035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The topology component of protocol performance 协议性能的拓扑组件
[1991] Proceedings 16th Conference on Local Computer Networks Pub Date : 1991-10-14 DOI: 10.1109/LCN.1991.208111
W. Dobosiewicz, P. Gburzynski
{"title":"The topology component of protocol performance","authors":"W. Dobosiewicz, P. Gburzynski","doi":"10.1109/LCN.1991.208111","DOIUrl":"https://doi.org/10.1109/LCN.1991.208111","url":null,"abstract":"The paper demonstrates that the performance of MAC-level protocols is not very meaningful, when considered alone. The true object of performance analysis should be the pair (T,P), where T stands for network topology, and P for MAC-level protocol. The paper examines the performance of two MAC-level protocols: DQDB and LCSMA-CD/U/P. As both of them are capacity-1 protocols, they achieve the same maximum throughput; thus, the focus is on the packet access time and on fairness. The investigation shows that either protocol can be shown as greatly unfair or totally fair, depending on the topology that it operates on. As a byproduct, it is shown that the UU-BUS topology is quite interesting and merits further studies.<<ETX>>","PeriodicalId":163373,"journal":{"name":"[1991] Proceedings 16th Conference on Local Computer Networks","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121130308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A multiple-priority scheme for distributed queue dual bus networks 分布式队列双总线网络的多优先级方案
[1991] Proceedings 16th Conference on Local Computer Networks Pub Date : 1991-10-14 DOI: 10.1109/LCN.1991.208066
K. Khalil
{"title":"A multiple-priority scheme for distributed queue dual bus networks","authors":"K. Khalil","doi":"10.1109/LCN.1991.208066","DOIUrl":"https://doi.org/10.1109/LCN.1991.208066","url":null,"abstract":"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 network users. This paper introduces an efficient mechanism to augment and enhance the operations of the current BWB mechanism. Simulation results have shown that with minor modifications to the current BWB mechanism, the DQDB protocol will be able to support multiple priority traffic. These modifications are shown to have no adverse effects on the access delay characteristics of the current DQDB protocol. In fact, results indicate that the proposed mechanism has better performance under light and asymmetric load conditions. In addition, the proposed mechanism can be implemented without any modification to the DQDB slot format and incurs minimal added complexity.<<ETX>>","PeriodicalId":163373,"journal":{"name":"[1991] Proceedings 16th Conference on Local Computer Networks","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125508976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
All optical multichannel multihop networks 全光多通道多跳网络
[1991] Proceedings 16th Conference on Local Computer Networks Pub Date : 1991-10-14 DOI: 10.1109/LCN.1991.208077
S. Brofferio, P. Camarda, M. Sario, A. D’orazio, M. M. Nuovo
{"title":"All optical multichannel multihop networks","authors":"S. Brofferio, P. Camarda, M. Sario, A. D’orazio, M. M. Nuovo","doi":"10.1109/LCN.1991.208077","DOIUrl":"https://doi.org/10.1109/LCN.1991.208077","url":null,"abstract":"A photonic packet switching communication network is presented and its feasibility is discussed. In particular, it is explicitly supposed that the electro-optical conversion is done only by the end users, while all other network functions (transmission, signal processing, routing, etc.) are implemented by photonic circuits. To interconnect the independent channels obtained by partitioning the global optical bandwidth, the class of topologies, called extended shufflenet, is considered. Two particular networks of this class (multiwavelength loop and extended shufflenet with shared channels), which have routing algorithms simple enough to be implemented by photonic circuits, have been analyzed. The photonic architecture developed for the multiwavelength loop has been applied to the extended shufflenet, which is a feasible possibility for a network with a sustained capacity of the order of the gigabit/s per user. The photonic components used in these circuits have been demonstrated in various laboratories and essentially comprehend delay lines, optical switches, simple optical gates, frequency converters, optical filters, etc. Some of these components have been experimentally integrated in subsystems and the implementation of the proposed circuit with today technology appears feasible.<<ETX>>","PeriodicalId":163373,"journal":{"name":"[1991] Proceedings 16th Conference on Local Computer Networks","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126826813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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