Which statement about iBGP neighbor formation is true?

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Multiple Choice

Which statement about iBGP neighbor formation is true?

Explanation:
iBGP is used inside the same autonomous system to exchange routes between routers, so the neighbors must reside in the same AS. To form a BGP session, the neighbor's IP address has to be reachable, because BGP builds a TCP connection (port 179) between the peers, which requires underlying IP connectivity. The option that describes iBGP as needing to be in a different AS would refer to EBGP, not iBGP, and reachability is essential for session establishment, not optional.

iBGP is used inside the same autonomous system to exchange routes between routers, so the neighbors must reside in the same AS. To form a BGP session, the neighbor's IP address has to be reachable, because BGP builds a TCP connection (port 179) between the peers, which requires underlying IP connectivity. The option that describes iBGP as needing to be in a different AS would refer to EBGP, not iBGP, and reachability is essential for session establishment, not optional.

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