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CCNP Enterprise Core (350-401) Cisco Routing

Border Gateway Protocol (BGP)

In BGP, a group of routers under a single organisations control is usually housed within a single autonomous system (AS) number, with optionally a number of other interior gateway protocols within that domain to route packets within that group of routers. BGP can be used as the only interior gateway protocol as well as the exterior network protocol if the network administrator chooses.

It is important to note that if other interior gateway protocols are being used to provide information to BGP, that information must be consistent and not change often.

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