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COMPUTER PLATFORMS

COMPUTER PLATFORMS

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COMPUTER PLATFORMS

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  1. Building & Planning Computer Networks Week 8 COMPUTER PLATFORMS Stuart Cunningham - Computer Platforms - 2003

  2. Use the time to work on your assignments and do some background reading about networks NO LECTURE WEDNESDAY(19th Nov. 2003) Stuart Cunningham - Computer Platforms - 2003

  3. Week 8 • Basic LAN Networks • 10 Base 2 • 10 Base 5 • 10/100 Base T • 1000 Base T • Token Ring • Planning Network • Factors affecting planning • Building the Network • Responding to requirements Stuart Cunningham - Computer Platforms - 2003

  4. 10 Base 2 • ‘thinnet’ or ‘cheapernet’ • Bus Topology • Co-axial cable (RG-58) (5mm thick) • BNC Connectors • Network Interface Card (NIC) and T-Piece • 50 Ohm Terminators • 10 Mbps (Megabits per second) Data Rate • 30 connections - maximum on one piece of coaxial cable • 185 meters - maximum distance between connections Stuart Cunningham - Computer Platforms - 2003

  5. 10 Base 5 • ‘thicknet’ • Bus Topology • Co-axial cable (10mm thick) • 50 Ohm Terminators • ‘vampire’ taps • 10 Mbps (Megabits per second) Data Rate • 100 connections (taps) - maximum on one piece of coaxial cable • 500 meters - maximum distance between connections Stuart Cunningham - Computer Platforms - 2003

  6. 10 / 100 Base T • Star Topology • Uses Network Interface Card (NIC) • Uses UTP (Unshielded Twisted Pair) Cables • Category 3 or better • Uses hubs to interconnect multiple nodes • 10 / 100 Mbps Data Rate • Uses RJ-45 modular connectors (plugs and sockets) • 100 meters - maximum distance between connections Stuart Cunningham - Computer Platforms - 2003

  7. 1000 Base T • Star Topology • Uses category 5 or better UTP cable • 1000 Mbps (Megabits per second) / 1 Gbps (Gigabits per second) Data Rate • Hubs / switches • Otherwise the same as 100 Base T Stuart Cunningham - Computer Platforms - 2003

  8. Token Ring • First developed by IBM (International Business Machines) • Uses UTP, STP (Shielded Twisted Pair), or fibre cables • Number of maximum connections and distance of cable depends on the equipment being used • PHYSICAL Star - LOGICAL ring topology • MAU (Multi-station Access Unit) acts as a hub • Need special NIC to connect to MAU • Still in use, but becoming an old technology Stuart Cunningham - Computer Platforms - 2003

  9. Planning the network • What will network be used for? • Bandwidth • Security issues • Reliability • Traffic issues • Interconnection • How many users/nodes? • Topology • Bandwidth • Traffic issues • Compatibility issues • Client / Server or Peer-to-peer • Administration • Physical requirements / constraints Stuart Cunningham - Computer Platforms - 2003

  10. Planning the network • Expansion / future proofing • Scalability • Interconnection • Bandwidth • Number of users supported • Centralised control / administration • Installation / maintenance • Costs • Reliability • Physical restrictions / considerations • Any special requirements? Stuart Cunningham - Computer Platforms - 2003

  11. Building the network • To be effective network must meet needs • Obvious, but the network is useless if it doesn’t do what it was intended to do • Total cost should not exceed savings • Price of installation should not be greater than the amount of money the network will save the organisation • Analyse options available • Topology • Bandwidth • Number of users supported • Client / Server • Peer-to-peer • Media • Security Stuart Cunningham - Computer Platforms - 2003

  12. Week 8 – What u know? • Basic LAN Networks • 10 Base 2 • 10 Base 5 • 10/100 base T • 1000 Base T • Token Ring • Planning Network • Factors affecting planning • Building the Network • Responding to requirements Stuart Cunningham - Computer Platforms - 2003