Home » Cisco » 200-105 v.2 » Which three states does a BGP routing process pass when it establishes a peering session with a neighbor?
Through which three states does a BGP routing process pass when it establishes a peering session with a neighbor? (Choose three.)
A. Open receive
B. Inactive
C. Active
D. Connected
E. Open sent
F. Idle
Correct Answer: CEF
Explanation/Reference:
Explanation:
BGP states are as follows:
1. IDLE – Router is searching routing table to see whether a route exists to reach the neighbor.
2. CONNECT – Router found a route to the neighbor and has completed the three-way TCP handshake.
3. OPEN SENT – Open message sent, with parameters for the BGP session.
4. OPEN CONFIRM – Router received agreement on the parameters for establishing session.
5. ACTIVE – Router didn’t receive agreement on parameters of establishment.
6. ESTABLISHED – Peering is established; routing begins.