What is bgp and ad vlaue

Question

Accepted Answer

BGP (Border Gateway Protocol) is a routing protocol used to exchange routing information between different autonomous systems.

BGP is an exterior gateway protocol used in large-scale networks.
It allows routers in different autonomous systems to communicate and exchange routing information.
BGP uses path vector routing, which takes into account multiple factors to determine the best path for data transmission.
BGP assigns an administrative distance (AD) value to each route, which helps routers prioritize routes from different sources.
The AD value is used to select the best route when multiple routes to the same destination exist.
Lower AD values indicate higher priority routes.
For example, BGP may assign an AD value of 20 to routes learned from external BGP peers and an AD value of 200 to routes learned from internal BGP peers.

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