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# [1991] Proceedings 16th Conference on Local Computer Networks

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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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• ### Internetworking data services

Publication Year: 1991, Page(s):223 - 229
Cited by:  Patents (1)
| | PDF (740 KB)

This paper describes considerations for potential future public data communication services interconnecting users on private local area networks belonging to different administrative domains. The relevant management issues are addressed in an architecture consisting of distributed software modules organized in a hierarchical structure supporting network administration functions. The authors descri... View full abstract»

• ### The evolution of FDDI at CERN and Digital Equipment Corporation's participation

Publication Year: 1991, Page(s):332 - 334
| | PDF (188 KB)

In 1987, CERN (European Laboratory for Particle Physics) began investigating FDDI technology. This was due to the increasing load on the then ethernet backbone, due to the LEP accelerator. CERN began to seek an alternative high-speed industry standard for their backbone. In an open environment such as CERN, this is of crucial importance. Moreover this key factor of interoperability amongst differe... View full abstract»

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

Publication Year: 1991, Page(s):214 - 222
Cited by:  Papers (2)  |  Patents (1)
| | PDF (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»

• ### A parallel implementation of XTP on transputers

Publication Year: 1991, Page(s):321 - 329
Cited by:  Papers (10)
| | PDF (844 KB)

High performance communication systems have to provide very high data rates of more than 100 Mbit/s to new applications such as multimedia applications. To overcome the bottleneck in communication systems, the protocol processing of the layers above media access control layer, light weight protocols such as XTP (Xpress Transfer Protocol) are used. XTP is a protocol with functionality of layers thr... View full abstract»

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

Publication Year: 1991, Page(s):204 - 213
| | PDF (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»

• ### XTP/KRM implementation on a transputer network

Publication Year: 1991, Page(s):310 - 320
Cited by:  Papers (3)
| | PDF (856 KB)

XTP is a real time transfer protocol designed to be implemented in a dedicated hardware environment. To obtain a transputer based parallel implementation, the authors modified a standard implementation (based on UNIX BSD system) on three aspects: the structure of the implementation, interfaces with host, and system primitive references. This new implementation was modelled. Performance was analyze... View full abstract»

• ### A traffic control strategy for a DQDB-type MAN

Publication Year: 1991, Page(s):195 - 203
Cited by:  Papers (1)  |  Patents (6)
| | PDF (508 KB)

The joint problem of admission control of isochronous traffic and bandwidth sharing between isochronous and asynchronous traffic is addressed, in a MAN environment of the DQDB type. Local access controllers at the users' sites independently decide on the acceptance of each new isochronous call be applying a randomized decision rule. A central controller periodically reassigns bandwidth partitions ... View full abstract»

• ### FDDI network availability analysis

Publication Year: 1991, Page(s):24 - 33
Cited by:  Papers (7)
| | PDF (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»

• ### A partitioned implementation of the Xpress Transfer Protocol. I

Publication Year: 1991, Page(s):301 - 309
Cited by:  Papers (3)
| | PDF (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»

• ### A transputer based OSI-gateway for LAN-interconnection across ISDN

Publication Year: 1991, Page(s):158 - 165
Cited by:  Papers (1)  |  Patents (2)
| | PDF (780 KB)

Interconnections of remote local area networks (LANs) across public networks are of growing interest. The paper presents an OSI gateway to interconnect LANs across ISDN. The OSI connectionless network protocol (CLNP) supports interconnection of different subnetworks. The most important component of the gateway is an adaption layer to integrate ISDN into the gateway structure. The main task of this... View full abstract»

• ### FDDI advanced concentrator architecture considerations

Publication Year: 1991, Page(s):356 - 361
| | PDF (476 KB)

This paper addresses architectural issues regarding the design of an advanced concentrator for FDDI networks. The main theme is the advanced management, configuration and control capabilities provided by this architecture. The following major points are addressed: advantages inherent to a multiple MAC concentrator (i.e. at least one MAC residing on each of the three possible internal path types: p... View full abstract»

• ### Distributing the Stuttgart Tetrahedron

Publication Year: 1991, Page(s):185 - 194
| | PDF (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»

• ### Defense data network management system

Publication Year: 1991, Page(s):375 - 377
Cited by:  Patents (1)
| | PDF (220 KB)

The management system provides network management of defense related computer networks for the armed services within the Continental United States (CONUS). The architecture is discussed from the standpoint of the flow of diagnostic information and the role of equipment and personnel. The hierarchy of the network management is discussed to give the overall picture of the network management system View full abstract»

• ### Graceful insertion and removal of stations in FDDI networks

Publication Year: 1991, Page(s):494 - 502
Cited by:  Papers (2)
| | PDF (708 KB)

The effects of station insertion and removal from concentrators attached to the dual ring in FDDI networks are examined. The frame-loss caused by the insertion and removal of stations is compared to the frame-loss caused by the ring bit error rate (BER). This is found to be significant for most FDDI networks. Algorithms for 'graceful' insertion and removal are proposed to minimize the impact of th... View full abstract»

• ### Performance evaluation of FDDI-what about packet loss?

Publication Year: 1991, Page(s):18 - 23
Cited by:  Papers (5)
| | PDF (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»

• ### Making transport protocols fast

Publication Year: 1991, Page(s):295 - 300
Cited by:  Papers (5)  |  Patents (1)
| | PDF (556 KB)

An international group of researchers, led by Dr. G. Chesson at Silicon Graphics Inc., has developed a new transport+network protocol for modern distributed computing systems. Extant protocols (e.g. TCP, TP4, Delta-t, NETBLT, GAM-T-103, VMTP, URP) were first examined to understand their solutions to common data transfer problems. Then, a new protocol called XTP (Xpress Transfer Protocol) was devel... View full abstract»

• ### Comparison of DQDB and FDDI MAC access protocols

Publication Year: 1991, Page(s):84 - 95
Cited by:  Papers (1)
| | PDF (736 KB)

A comparison of the MAC access protocols of the IEEE 802.6 DQDB MAN and FDDI standards is presented. The results are derived from simulation studies, and verified by analytical approximations. The comparison is based on average packet access delays of nodes on DQDB and FDDI networks. By setting the available bandwidth of the two networks to be equal, the authors draw broad conclusions regarding th... View full abstract»

• ### TESLA as a tool of developing bridge protocols

Publication Year: 1991, Page(s):148 - 157
| | PDF (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»

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

Publication Year: 1991, Page(s):467 - 472
| | PDF (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»

• ### Interconnecting LANs and MANs to ATM

Publication Year: 1991, Page(s):259 - 270
Cited by:  Papers (6)
| | PDF (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»

• ### Performance modelling of LAN bridges and routers

Publication Year: 1991, Page(s):554 - 561
Cited by:  Papers (1)
| | PDF (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»

• ### FDDI network architectures, performance and futures

Publication Year: 1991, Page(s):343 - 345
| | PDF (808 KB)

Standards compliant FDDI interfaces have been available for between one and two years. As measured by the installed base, the authors believe that the technology is being accepted and deployed, with the number of nodes per network growing rapidly. In this paper, based on their experiences as a vendor of FDDI equipment, they first briefly recount certain features of FDDI. Next, they examine the rea... View full abstract»

• ### Brouter: the transparent bridge with shortest path in interconnected LANs

Publication Year: 1991, Page(s):175 - 183
Cited by:  Papers (1)  |  Patents (6)
| | PDF (668 KB)

Transparency is a popular feature in a distributed system where users can access any local or remote resources just as if they were local. The paper proposes a protocol which combines the features of transparency and shortest path. The result is a bridge which supports self learning and distributed routing computation. Since this bridge has all routing facilities as a router, it is called brouter ... View full abstract»

• ### An expert integrator for communication networks management

Publication Year: 1991, Page(s):369 - 374
| | PDF (388 KB)

Network management is a difficult problem. How to manage the multi-vendor network efficiently and effectively has become a growing concern in the international communication networks community. OSI management has defined a basic set of facilities (functional areas) that the network management should provide. The authors propose an integrated architecture which allows the expert systems, one for ea... View full abstract»