Refer to the exhibit, which shows the output of a BGP debug command. Why has the local router at 172.16.23.58 been unable to establish adjacency with its only neighbor?
A.
The local router has not received a keepalive message from the neighbor.
B.
There is no active route to the BGP neighbor.
C.
The local router has not received a SYN/ACK packet from the neighbor.
D.
The local router has not received an OPEN message from the neighbor.
This slide shows a flow chart of the BGP neighbor states and how they change:
• Idle: Initial state
• Connect: Waiting for a successful three-way TCP connection
• Active: Unable to establish the TCP session
• OpenSent: Waiting for an OPEN message from the peer
• OpenConfirm: Waiting for the keepalive message from the peer
• Established: Peers have successfully exchanged OPEN and keepalive messages
Network Security Support Engineer Study Guide p403
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joeytrib
2 weeks agod9eeb6d
2 weeks, 1 day ago