Simple definition
The routing protocol used to exchange routes between large networks and operators.
Technical definition
Border since the first phase of the project, the project is a multi-domain routing protocol based on autonomous systems and path selection policies.
What is it used for ?
Interconnect multi-home operators, cloud or networks and control prefix ads.
Practical example
A company with two Internet operators can use BGP to announce its prefixes by both links.
Common issues
- Bad road announcement
- Prefix leak
- Insufficient screening of roads received
Related terms
Key takeaway: This entry explains the general operation of the term. Exact settings may vary depending on software, vendors and environments.