Communication protocol | |
Abbreviation | BGP |
---|---|
Purpose | exchange Internet Protocol routing information |
Introduction | June 1, 1989[1] |
Based on | EGP |
OSI layer | Application layer |
Port(s) | tcp/179 |
RFC(s) | § Standards documents |
Internet protocol suite |
---|
Application layer |
Transport layer |
Internet layer |
Link layer |
Border Gateway Protocol (BGP) is a standardized exterior gateway protocol designed to exchange routing and reachability information among autonomous systems (AS) on the Internet.[2] BGP is classified as a path-vector routing protocol,[3] and it makes routing decisions based on paths, network policies, or rule-sets configured by a network administrator.
BGP used for routing within an autonomous system is called Interior Border Gateway Protocol (iBGP). In contrast, the Internet application of the protocol is called Exterior Border Gateway Protocol (EBGP).
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