Performance analysis of deflection routing multichannel-metropolitan area networks
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The authors evaluate the performance of two different network architectures, implementing multichannel metropolitan area networks (M-MANs). Deflection routing, no internal storage, and a high connectivity degree are the main characteristics of regular networks built by interconnecting small-size multichannel nodes. Analytical models have been developed for network architectures with a connectivity degree equal to four: the bidirectional Manhattan street network (BMSN) and the shuffle net (SN). The authors evaluate the performance under uniform traffic distribution and also under the realistic assumption that the user's attachments to network nodes are equipped with input and output buffers. The performances under investigation are throughput, average delay, and packet loss. The availability of an analytical model makes it possible to investigate the performance of networks with a large number of nodes. The strong and weak points of the two M-MAN architectures are pointed out in the discussion of the results.< Keywords:
Deflection routing
Metropolitan area network
Abstract The first generation of local/metropolitan-area networks (LANs/MANs) used copper-based media, spread out typically across a building or a campus under one autonomous administration. With the arrival of optical-fiber transmission, considerable developments took place to enhance the speed and size of these copper-based LANs and MANs, by using optical fibers over various possible topologies, such as bus, ring, and star. We begin with the earlier experiments carried out on optical LANs/MANs in various research groups, and then present some of the standardized optical LANs/MANs, such as distributed queue dual bus (DQDB), fiber-distributed digital interface (FDDI), and different versions of high-speed Ethernet (1/10/40/100 Gbps). Finally, we describe some of the storage-area networks (SANs) augmented by optical fiber transmission, where small locally networked clusters of servers and storage devices are accessed by workstations through LANs such as, HIPPI, ESCON, and fiber channel. (139 words)
Metropolitan area network
Distributed-queue dual-bus
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Issues discussed at the 13th International Teletraffic Congress (ITC-13) regarding high speed local area networks (LANs), wide area networks (WANs) and metropolitan area networks (MANs) are reviewed, and some important problem areas that remain are noted. Specific areas addressed include performance of two important emerging MAN standards, namely distributed queue dual bus (DQDB) and fiber distributed data interface (FDDI), retransmission protocols in high-speed networks, and related questions of fairness.< >
Retransmission
Distributed-queue dual-bus
Metropolitan area network
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The superior transmission characteristics of optical fiber led to its initial and continuing application in long-distance point-to-point communications. For multiuser, packet-switched, local and metropolitan area networks (LAN's and MAN's), perhaps the most dramatic appeal of lightwave technology is the opportunity to share an enormous networkcapacity (potentially tens of terabits per second on a single fiber) among all network users.
Metropolitan area network
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According to the fact of the computer network developing, the implementation and application of the virtual local area network on the broadband MAN(Metropolitan Area Network) are introduced. The technology of VLAN is simply expound, and how to implement the communication of VLAN on multi switches、the planning of VLAN、the internetworking of LAN are introduced.
Virtual LAN
Metropolitan area network
Internetworking
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From the actuality of Educational Metropolitan Area Network in Ankang,in line with principle of Application of priority,unified planning and implementation of the distribution.First,constructed virtual Educational Metropolitan Area Network based on VPN,then,constructed shareable educational resources database based on unified message standards,finally,constructed Educational Metropolitan Area Network in Ankang based on RPR.
Metropolitan area network
Educational resources
Line (geometry)
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This paper introduces firstly the basic concept and construction of the metropolitan area optical network. And then the authors summarize the actual construction of metropolitan area optical network in Zhejiang province. On the base of that, the present paper briefly discusses the evolution that metropolitan area optical network develops form the ring topology networks to the mesh networks. Finally, some suggestions are given about the principle of the planning and designing of metropolitan area optical network.
Metropolitan area network
Network Structure
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A tutorial providing a comprehensive introduction to LAN and MAN technology and standards, combining original material and reprinted articles in the following organization: local area networks, metropolitan area networks, the network interface, LAN and MAN performance, internetworking, glossary, lis
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High capacity metropolitan area networks must be developed to enable future generations of high-speed multimedia Internet applications and services. This paper discusses emerging issues in the development of future optical metropolitan area networks and describes the pioneering research at Stanford University to address some of them. In particular, the HORNET project, which boasts a new architecture and novel subsystems for next generation high capacity metropolitan networks, is featured in this paper.
Metropolitan area network
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Metropolitan area networks (MANs) are network technologies similar in nature to local area networks (LANs), but with the capability to extend the reach of the LAN across whole cities or metropolitan areas, rather than being limited to 100 metres or so of cabling. This chapter reviews the most important MAN technologies; FDDI (fibre distributed data interface), and SMDS (switched multimegabit digital service), which is based on the DQDB (distributed queue dual bus) technique.
Distributed-queue dual-bus
Metropolitan area network
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