200-301 · Question #170
200-301 Question #170: Real Exam Question with Answer & Explanation
The correct answer is A: The two devices must reside in different autonomous systems. Just like OSPF or EIGRP, BGP establishes a neighbor adjacency with other BGP routers before they exchange any routing information. Unlike other routing protocols however, BGP does not use broadcast or multicast to “discover” other BGP neighbors. Neighbors have to be configured ma
Question
Which two statements about eBGP neighbor relationships are true? (Choose two)
Options
- AThe two devices must reside in different autonomous systems
- BNeighbors must be specifically declared in the configuration of each device
- CThey can be created dynamically after the network statement is configured.
- DThe two devices must reside in the same autonomous system
- EThe two devices must have matching timer settings
Explanation
Just like OSPF or EIGRP, BGP establishes a neighbor adjacency with other BGP routers before they exchange any routing information. Unlike other routing protocols however, BGP does not use broadcast or multicast to “discover” other BGP neighbors. Neighbors have to be configured manually and BGP uses TCP port 179 for the connection.
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