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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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Computer platforms l.jpg

Building & Planning Computer Networks

Week 8

COMPUTER PLATFORMS

Stuart Cunningham - Computer Platforms - 2003


No lecture wednesday 19 th nov 2003 l.jpg

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


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Week 8 background reading about networks

  • 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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10 Base 2 background reading about networks

  • ‘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


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10 Base 5 background reading about networks

  • ‘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


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10 / 100 Base T background reading about networks

  • 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


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1000 Base T background reading about networks

  • 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


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Token Ring background reading about networks

  • 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


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Planning the network background reading about networks

  • 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


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Planning the network background reading about networks

  • 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


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Building the network background reading about networks

  • 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


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Week 8 – What u know? background reading about networks

  • 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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