Basic HTML version of Foils prepared Dec. 6 98

Foil 21 Request for Comments (3)

From Network Design for Internetworking Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
1 Planning Assumptions and Constraints
  • technology, in-house expertise and manpower
  • financial resources, aversion to risk
  • research/educational needs of various departments
  • scope of the project (backbone, departments)
2 Key Technologies
  • bridges -have knowledge of Ethernet or Token Ring; have no knowledge of TCP/IP or Apple Talk; designed to improve network performance by filtering network traffic; inexpensive, fast, easy to install and manage
  • routers - operate at layer 3 of OSI RM; have knowledge of higher layer protocols like TCP/IP or AppleTalk; effective in controlling the flow of traffic; enforce security polices; control the propagation of broadcasts; fairly expensive
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