You are troubleshooting a downed BGP session. Referring to the exhibit, what is the cause of the problem?

Question

Exhibit

Options

• AThe UDP session between the peers has not been established.
• BThe local peer has sent an Open message but not received one from the remote peer.
• CThe TCP session between the peers has not been established.
• DThe local peer has sent an Update message but not received one from the remote peer.

• A
  16% (3)
• B
  5% (1)
• C
  74% (14)
• D
  5% (1)

Explanation

The BGP session in the exhibit shows the state as Connect, which indicates that the TCP session between the BGP peers has not been fully established. BGP State "Connect": The Connect state is the second stage in the BGP finite state machine (FSM). At this stage, BGP is trying to establish a TCP session with the peer, but the session has not yet been successfully A successful TCP three-way handshake (SYN, SYN-ACK, ACK) is required before BGP can progress to the OpenSent state, where the peers exchange BGP Open messages. Possible Causes: A firewall blocking TCP port 179. Incorrect IP addresses or network connectivity issues between the BGP peers.

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