Protocol for communicating routing information on the Internet
"BGP" redirects here. For other uses, see BGP (disambiguation).
Border Gateway Protocol
Communication protocol
BGP state machine
Abbreviation
BGP
Purpose
exchange Internet Protocol routing information
Introduction
June 1, 1989; 34 years ago (1989-06-01)[1]
Based on
EGP
OSI layer
Application layer
Port(s)
tcp/179
RFC(s)
§ Standards documents
Internet protocol suite
Application layer
BGP
DHCP (v6)
DNS
FTP
HTTP (HTTP/3)
HTTPS
IMAP
IRC
LDAP
MGCP
MQTT
NNTP
NTP
OSPF
POP
PTP
ONC/RPC
RTP
RTSP
RIP
SIP
SMTP
SNMP
SSH
Telnet
TLS/SSL
XMPP
more...
Transport layer
TCP
UDP
DCCP
SCTP
RSVP
QUIC
more...
Internet layer
IP
v4
v6
ICMP (v6)
NDP
ECN
IGMP
IPsec
more...
Link layer
ARP
Tunnels
PPP
MAC
more...
v
t
e
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).
^"History for rfc1105". IETF. Retrieved 1 December 2023.
^"BGP: Border Gateway Protocol Explained". Orbit-Computer Solutions.Com. Archived from the original on 2013-09-28. Retrieved 2013-10-08.
^Sobrinho, João Luís (2003). "Network Routing with Path Vector Protocols: Theory and Applications" (PDF). Archived (PDF) from the original on 2010-07-14. Retrieved March 16, 2018.
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the NSFNET Backbone Phase II. He co-designed the BorderGatewayProtocol (BGP), the core routing protocol of the Internet. He was also one of the lead designers...
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