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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

Building & Planning Computer Networks

Week 8

COMPUTER PLATFORMS

Stuart Cunningham - Computer Platforms - 2003

no lecture wednesday 19 th nov 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
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
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
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
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
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
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
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 network10
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
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
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