300-320 · Question #595
An engineer must be create a BGP design that allows traffic load balancing. Which BGP feature must be enabled manually to achieve this design?
The correct answer is C. Maximum-paths. By default, BGP installs only a single best path into the routing table, even if multiple equal-cost paths exist. The 'maximum-paths' command (for eBGP) or 'maximum-paths ibgp' (for iBGP) must be explicitly configured to allow BGP to install multiple paths and perform load…
Question
An engineer must be create a BGP design that allows traffic load balancing. Which BGP feature must be enabled manually to achieve this design?
Options
- AConfederations
- BMaximum-prefix
- CMaximum-paths
- DExtended communities
How the community answered
(38 responses)- A3% (1)
- B5% (2)
- C87% (33)
- D5% (2)
Explanation
By default, BGP installs only a single best path into the routing table, even if multiple equal-cost paths exist. The 'maximum-paths' command (for eBGP) or 'maximum-paths ibgp' (for iBGP) must be explicitly configured to allow BGP to install multiple paths and perform load balancing. Confederations (A) address iBGP scalability, Maximum-prefix (B) limits the number of prefixes accepted from a peer to prevent table overflow, and Extended communities (D) are used for policy attributes such as VPN route targets - none of these enable load balancing.
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