Plan for Constructing LAN Architecture

Added on - Sep 2019

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ContentsIntroduction...........................................................................................................................................2OSI Model..............................................................................................................................................3Interoperability..................................................................................................................................3Architecture.......................................................................................................................................4History...............................................................................................................................................4Functionality of each layer.................................................................................................................4Comparison of OSI and TCP / IP.............................................................................................................6Protocols at every layer.........................................................................................................................8Comparative analysis of media type....................................................................................................11Summary.............................................................................................................................................13References...........................................................................................................................................131
An IntroductionBackgroundThe outline of School of Electronic & Electrical Engg. at University of Leeds after renovating thefloors such as Ground, Istand 2ndis depicted in the following figure 1.2Computer Lab(50PCs)Electronics Lab(20 WS)Lecture HallOffice 1Office 2Office 3Office 4Office 5Reception (5 Desks)Lecture HallR&D Lab -1 (12Desks)R&D Lab -2 (15Desks)Office 1Office 2Office 3Office 4Office 5Office 6
Figure .1In this regard, 4thand 5thfloor has LAN architecture. The floors ground, 1stand 2ndare notinterconnected which means the computer in these floors work as an individual system. They couldnot share their resources such as storage, data or hardware etc. The small geographical area whichcovers all the three floors consist components (computers or printers etc.). Local Area Network caninterconnect every component (computers or printers etc.) to make them communicate. To buildLAN setup, it is important to select the network architecture which decides the speed of thecommunication, components to be used for networking etc. In this scenario, Ethernet is the mostoptimal choice for both wire and wireless connection. Ethernet can connect up to 1,024 computersor devices.This report gives the complete information about the OSI, TCP/IP reference model, in-depth working principles of each model and comparative analysis of different media type whichmay be used to enable network connectivity.Outline of the reportThis report gives the detailed work plan for constructing LAN architecture after performingrequirement analysis. The report also provides the elaborate description of OSI and TCP/IPreference models. It extends the study, to suggest the various mediums those are used for localarea connection as well as internet. The contributes the layout of wired and wireless LANarchitectures. The assignment task concludes with interesting findings.An O S I ModelInteroperabilityThe model of Open Systems Interconnection is a model reference for users to know or help how thecommunications can be done in between the devices. The OSI model can overcome theinteroperability issues between different devices in network. The source and destination cancommunicate each other without concerning about their own internal architectures. The referencemodels provide the conceptual layout to achieve the above said task. The end user cancommunicate only via applications to achieve their task. The reference model provides themechanism to carry out that seamless communication.In the given scenario, to provide the seamless connectivity between computers is a difficult task.The entire communication process is divided into junks of tasks in which each task is achieved byreference model individual layers.3
ArchitectureThe model of OSI has 7 layers starting from Physical layer to Application Layer. In between itincludes datalink layer, network layer, transport, session and presentation. Detailed architecture isdepicted in figure 2. Both source and destination has the universal standard model. Whilecommunication, at source end the task begins from the Application layer and proceed towardsPhysical layer. At destination end, the above said task is inverse one which starts from physical andproceed towards application layer.Figure. 2HistoryISO (International Organization of Standardization) decides to develop standard model forcommunication in between source and destination with the following consideration.The source and destination points need not be similar architecture in terms of hardware,software and communication medium.The model gives abstract (illusion) view for the end users.In the year 1974, the OSI Reference model was developed [1]. It has 7 layers each of which has setof rules and regulations (protocols) to perform specified task [2].Each Layer Functionality1. Base level Layer (Physical)The bottom level layer of OSI model is physical layer. It takes care of raw transmission such thedata are transmitted in terms of bits. It establishes the physical connection with the destination aswell as terminates the connection. The physical, electrical and mechanical specifications are comeunder physical layer [3].4
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