H12-821_V1.0 · Question #860
After a BGP connection is established, without load balancing configured, the BGP Speaker only advertises the best route in the BGP routing table to the neighbor.
The correct answer is A. TRUE. A (TRUE) is correct because BGP's path selection algorithm evaluates all routes to a destination and selects exactly one "best" route, which is the only route advertised to peers - this is a fundamental BGP design principle that prevents routing loops and ensures deterministic…
Question
Options
- ATRUE
- BFALSE
How the community answered
(26 responses)- A73% (19)
- B27% (7)
Explanation
A (TRUE) is correct because BGP's path selection algorithm evaluates all routes to a destination and selects exactly one "best" route, which is the only route advertised to peers - this is a fundamental BGP design principle that prevents routing loops and ensures deterministic forwarding without load balancing.
B (FALSE) is wrong because BGP does not advertise multiple equal-cost paths by default; multipath/load balancing (via maximum-paths or BGP Multipath) must be explicitly configured before BGP will install or advertise more than one path to the same destination.
Memory tip: Think of BGP as an opinionated selector - it picks one winner from its Loc-RIB and only that winner gets shared. "One best route out the door" unless you explicitly tell it otherwise with multipath configuration.
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