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Building & Planning Computer Networks Week 8 COMPUTER PLATFORMS Use the time to work on your assignments and do some background reading about networks NO LECTURE WEDNESDAY (19 th Nov. 2003) Week 8 Basic LAN Networks 10 Base 2 10 Base 5 10/100 Base T 1000 Base T Token Ring

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Building & Planning Computer Networks

Week 8

COMPUTER PLATFORMS

Stuart Cunningham - Computer Platforms - 2003


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


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


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


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


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


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


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


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


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


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


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


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