Basic HTML version of Foils prepared Dec. 6 98

Foil 12 Designer Viewpoint (6)

From Network Design for Internetworking Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
1 Congestion
  • can occur in switches, routers, ports, buffers, transmission links, processors
  • cannot be avoided
  • blocking: - the user traffic is blocked when congestion occurs
  • Storage and queuing - data is stored in buffers in order it was received until there is sufficient bandwidth to transmit it
2 Maintainability
  • network must allow to maintain its operating efficiency
  • how to expand/modify in future when requirements increase
  • easy software upgrades
  • built-in tools for network monitoring, troubleshooting
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