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Published byBlanche Horton Modified over 9 years ago
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IS 477 BUSINESS DATA COMMUNICATIONS Design 1
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Overview Designing a LAN for a small company (<10 people) Needs analysis Technology design Cost assessment
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2x2 Classification Table USER APPLICATION Typical High Traffic Typical High Traffic 100 100/1000 ???
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Classify users (I) Owner: 1 person plays a great deal of golf rakes in the money doesn’t do much else OK, does the accounts (stand-alone) Typical
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Classify users (II) Travel Consultants: 6 people mainly working the telephones some walk-ins require (online) access to Travel Systems, such as Pegasus, Sabre, etc. Typical
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Classify users (III) Clerical Assistants: 2 people does all the paperwork, including faxing, ticket issuing, postage, etc. Typical
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Classify applications Travel Systems Pegasus, Sabre, etc. Word Processing MS Office 2010 Accounting Software Quicken High Traffic Typical
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Design in threes 1.Cheapest alternative: Meets only the core requirements, but cheap 2.Most likely: Meets critical requirements close to the stated budget 3.Gold-plated Takes advantage of the best of available products
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Nomenclature P1 Typical PC (1.5GHz) P2 High Traffic PC (2.8GHz) PR Printer FS File Server EF Email/Fax Server M Modem H Hub SW Switch R Router
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Design 1-1 H FS M Internet (ISP) Shared Ethernet P2 P1 PR 6 Consultants 1 Assistant Owner 1 Assistant
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Design 1-2 SW Travel ConsultantsManagement/Clerical Internet (ISP) M FS EF P2 P1 PR P2 PR Owner 2 Assistant 6 Consultants
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Design 1-3 RSW Travel ConsultantsManagement/Clerical Internet (T1) FS EF P2 PR P2 PR FS P2 PR P2 FO 6 Consultants 2 Assistants Owner X2
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Design 1-3-1 R SW Travel ConsultantsManagement/Clerical Internet (T1) FS EF P2 PR P2 PR FS P2 PR P2 FO 6 Consultants 2 Assistants X2 Owner
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Decision time! Which one will work? Which one works best? Which is best value for money? Therefore, which one would you recommend?
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Hardware Costs Typical PC (inc. NICs) High Traffic PC (inc. NICs) Hub (10/100 BaseT) Switch (10/100 Mbps) Router Cabling (Cat5e) WAN/MAN connection (T1, DSL, ISDN, Modem, ISP)
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Software Costs Windows 7 (9-clients) $3500 Microsoft Office 2010 (9-clients) $4500 Quicken $500 Who is going to manage the network? $50-60K
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Summary For a small company LAN: Most traffic will probably be confined to a particular group of users in this case, the Travel Consultants Plan to design in threes (most likely, cheapest, gold-plated) The design chosen will depend on: budget availability of space for devices, and, experience of management to recognize what is needed
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