The purpose of this report is to document how the requirements for advancing a routing protocol to Draft Standard have been satisfied by the Border Gateway Protocol version 4 (BGP-4). This report summarizes the key features of BGP, and analyzes the protocol with respect to scaling and performance. This is the first of two reports on the BGP protocol.
BGP-4 is an inter-autonomous system routing protocol designed for TCP/IP internets. Version 1 of the BGP protocol was published in RFC 1105. Since then BGP versions 2, 3, and 4 have been developed. Version 2 was documented in RFC 1163. Version 3 is documented in RFC1267. The changes between versions are explained in Appendix 2 of .
Possible applications of BGP in the Internet are documented in .
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