What is BGP (Border Gateway Protocol)?
Turkish: BGP
BGP is the internet routing protocol where autonomous systems announce which IP prefixes can be reached through which paths.
What is BGP?
BGP (Border Gateway Protocol) is the routing protocol large networks use to announce which IP prefixes can be reached through which paths. Internet service providers, data centers, and large cloud networks use BGP to exchange traffic policy.
How Does It Work?
In BGP, each large network is represented as an autonomous system (AS) with an AS number. It announces prefixes to neighboring networks. A prefix represents a range of IP addresses. Routers evaluate these announcements using policy information such as AS path, local preference, MED, and communities.
BGP does not simply choose the shortest physical route; it chooses the best route according to defined network policy. Peering, transit contracts, and redundancy design all influence routing decisions.
Business Use
BGP is critical for data centers with multiple internet links, CDN networks, DDoS protection routing, and large SaaS infrastructure. TCP/IP is the foundational protocol suite for internet communication, while an IP address is the addressing basis for the prefixes BGP announces.
Incorrect BGP announcements can cause outages or route hijacking risk. Route filtering, prefix limits, monitoring, and RPKI validation should therefore be part of operational safety.