What is the correct state between two BGP peers that are neighbors?

The correct answer is C. established. BGP uses a finite state machine with six states: Idle, Connect, Active, OpenSent, OpenConfirm, and Established. 'Established' is the final and only fully operational state, indicating that the BGP session is up, the OPEN messages have been successfully exchanged and…

Advanced Addressing and Routing Solutions

Question

Options

Aactive
Boperational
Cestablished
Dup

How the community answered

(63 responses)

A
6% (4)
B
3% (2)
C
89% (56)
D
2% (1)

Explanation

BGP uses a finite state machine with six states: Idle, Connect, Active, OpenSent, OpenConfirm, and Established. 'Established' is the final and only fully operational state, indicating that the BGP session is up, the OPEN messages have been successfully exchanged and acknowledged, and the peers can now exchange UPDATE messages (routes). 'Active' is actually a BGP state where the router is actively trying to initiate a TCP connection to the peer, not a healthy operational state. 'Operational' and 'Up' are not valid BGP state machine terms.

Topics

#BGP session states#BGP neighbor relationship#BGP established

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