Basic HTML version of Foils prepared Dec. 6 98

Foil 38 Open Shortest Path First (2)

From Introduction to Network Security Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
AS is divided into areas
  • topological database keeps overall picture of networks in relationship to routers
  • area's topology is invisible to entities outside the area
  • intra-area routing ( source and destination within an area)
  • inter-area routing ( source and destination in different areas)
  • OSPF backbone connects Areas

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