Quick Answer
The answer is 0. This is the default BGP weight value assigned to all routes learned from a neighbor, because weight is a Cisco-proprietary attribute that is locally significant only to the router itself and is not advertised to peers. Routes originated locally on the router, such as those injected via the network or aggregate-address commands, default to 32768, creating a clear distinction that ensures locally sourced routes are preferred by default. On the ENCOR 350-401 exam, this concept tests your understanding of BGP path selection order, where weight is evaluated first—higher weight wins. A common trap is confusing weight with local preference, which has a default of 100 and is exchanged between iBGP peers. Remember that weight is the only attribute that is purely local, so think of it as the router’s personal bias: zero for outsiders, 32768 for its own children. A simple memory tip: “Weight starts at zero for neighbors, 32K for home.”
This 350-401 practice question tests your understanding of bgp. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
What is the default value of the BGP 'weight' attribute for routes learned from a neighbor?
0
Correct. Weight defaults to 0 for routes learned from BGP neighbors.
100
Why wrong: Incorrect. 100 is the default local preference.
32768
Why wrong: Incorrect. 32768 is the default weight for locally originated routes, not learned routes.
1
Why wrong: Incorrect. There is no default weight of 1.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
0
The BGP 'weight' attribute is a Cisco-proprietary attribute that is locally significant only to the router on which it is configured. By default, routes learned from a BGP neighbor have a weight of 0, while routes originated locally on the router (e.g., via network or aggregate-address commands) have a weight of 32768. Weight is the highest priority BGP attribute in the path selection process, so a route with a higher weight is preferred over one with a lower weight.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
0
Why this is correct
Correct. Weight defaults to 0 for routes learned from BGP neighbors.
Related concept
Read the scenario before looking for a memorised answer.
100
Why it's wrong here
Incorrect. 100 is the default local preference.
32768
Why it's wrong here
Incorrect. 32768 is the default weight for locally originated routes, not learned routes.
1
Why it's wrong here
Incorrect. There is no default weight of 1.
Common exam traps
Cisco often tests the distinction between the default weight for locally originated routes (32768) versus routes learned from a neighbor (0), causing candidates to mistakenly choose 32768 when asked about learned routes.
Detailed technical explanation
The weight attribute is evaluated first in the BGP best-path selection algorithm, before local preference, AS-path length, and other attributes. It is not advertised to BGP peers and is stored only in the local BGP table. In a real-world scenario, an administrator might set weight on a per-neighbor basis to influence outbound traffic for specific prefixes without affecting other routers in the AS, providing granular control over path selection.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
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FAQ
BGP — This question tests BGP — Read the scenario before looking for a memorised answer..
The correct answer is: 0 — The BGP 'weight' attribute is a Cisco-proprietary attribute that is locally significant only to the router on which it is configured. By default, routes learned from a BGP neighbor have a weight of 0, while routes originated locally on the router (e.g., via network or aggregate-address commands) have a weight of 32768. Weight is the highest priority BGP attribute in the path selection process, so a route with a higher weight is preferred over one with a lower weight.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This 350-401 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-401 exam.
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