BGP

Définition

BGP[1] is a path-vector protocol used to exchange routing information between different AS[2] on the Internet.

Key characteristics of BGP:

  • Path-vector protocol used between AS[2]

  • Exchanges reachability information

  • Each route contains the AS[2]-PATH (list of AS[2] numbers the route passes through)

  • Route selection is based on policies, AS[2]-PATH length, and attributes

  • It is the main protocol that connects large networks on the Internet

  • Suitable for very large networks (Internet)