While designing a backup BGP solution, a network engineer wants to ensure that a single router with multiplex connections prefers the routes from a specific connection over all others. Which BGP…

The correct answer is D. Weight. Cisco's BGP best-path selection algorithm evaluates attributes in a specific order, and Weight is always checked first. Weight is a Cisco-proprietary attribute that is locally significant to a single router-it is never advertised to BGP peers. A higher weight is preferred, and…

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Question

While designing a backup BGP solution, a network engineer wants to ensure that a single router with multiplex connections prefers the routes from a specific connection over all others. Which BGP path selection attribute is considered first when seleccting a route?

Options

AAs-Length
BLink Bandwidth
CLocal preference
DWeight
EMED

How the community answered

(47 responses)

B
2% (1)
C
6% (3)
D
89% (42)
E
2% (1)

Explanation

Cisco's BGP best-path selection algorithm evaluates attributes in a specific order, and Weight is always checked first. Weight is a Cisco-proprietary attribute that is locally significant to a single router-it is never advertised to BGP peers. A higher weight is preferred, and it allows an administrator to influence which path a single router prefers without affecting the broader network. Because weight is the first tiebreaker evaluated, setting a higher weight on routes learned from a specific connection guarantees those routes are preferred over all others regardless of Local Preference, AS Path length, MED, or any other attribute. This makes Weight the correct answer for influencing a single router with multiple BGP connections to prefer one specific connection.

Topics

#BGP#path selection#weight attribute#route preference

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