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Fault-tolerant computer networks

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• Fault-tolerant Network Topologies
  • Network failures:

    Links can fail (accidentally cut) Nodes (switches) can fail

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  • Fault tolerant computer networks:

    Fault tolerant computer networks = the remaining operational portion of the computer network will operate normally (= can (send/receive)) when some component(s) have failed

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• How to construct fault-tolerant networks
  • Design of fault tolerant computer networks:

    A fault will cause a disruption of a route: Fault tolerance is achieved by providing alternate routes between nodes: Result: When one of the route is disrupted: the frames can still reach the destination through another route

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• A very unfortunate consequence of fault tolerant networking
  • Very unfortunate consequence of fault tolerant networking:

    A fault tolerant network will always contain loops:

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  • Warning:

    Loops in a computer network has very unpleasant effects...