A local router shows an EBGP neighbor in the Active state.
Which statement is true about the local router?
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A. B. C. D.A.
When a local router shows an EBGP neighbor in the Active state, it means that the router is trying to establish a BGP connection with the neighbor but has not been successful yet. In this state, the local router is actively attempting to initiate a TCP session with the neighboring router.
Option A is therefore the correct answer: The local router is attempting to open a TCP session with the neighboring router.
When a BGP session is established successfully, the routers exchange prefixes and other routing information. The local router will add the received prefixes in the RIB-IN (Routing Information Base-In) table, which is the BGP table where received prefixes are stored before the best path selection process.
Once the best path is selected, the prefixes are moved to the RIB-OUT (Routing Information Base-Out) table and can be used by the forwarding table to forward traffic. Therefore, option B is incorrect as the local router has not yet received prefixes from the neighboring router.
Option C is also incorrect as the forwarding table is only populated after the best path selection process, which occurs after the BGP session is established and the prefixes are exchanged.
Option D is also incorrect as BGP passive mode is a configuration where the router only accepts incoming BGP connections and does not initiate any outgoing connections. This would not cause the local router to be in the Active state when attempting to establish a connection with the neighboring router.