BGP is an exterior gateway protocol which runs among ASs. It focuses on routes control and selection of optimal routes rather than discovery and calculation of routes.

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BGP (Border Gateway Protocol) is designed to manage how packets are routed across the internet through the exchange of routing and reachability information between autonomous systems (ASs). It focuses on route control and selection rather than discovering or calculating routes, which is typically the role of interior gateway protocols.

BGP Is an Exterior Gateway Protocol Which Runs Among ASs