Basic HTML version of Foils prepared Dec. 6 98

Foil 47 BGP - Border Gateway Protocol (1)

From Introduction to Network Security Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski


Routing involves 2 activities
  • optimal path determination ( complex issue)
  • transport of packets through network (relatively straightforward)
BGP performs inter-domain routing in TCP/IP networks
BGP is an exterior gateway protocol (performs routing between multiple autonomous systems or domains and exchanges routing information with other BGP systems)
BGP was developed to replace its predecessor: EGP (Exterior Gateway Protocol - a particular instance if an exterior gateway protocol)
RFC 1771, 1654 (obsolete 1105, 1163, 1267)
autonomous system (routing domain) - portion of inter-network under common administrative authority



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