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300-410 Practice Question: Which THREE symptoms indicate a BGP route…
Which THREE symptoms indicate a BGP route dampening issue that is causing routes to be suppressed? (Choose THREE.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The show ip bgp command displays the route with a 'd' status code.
Route dampening suppresses routes that flap frequently. Symptoms include routes showing as 'dampened' in the BGP table, routes being absent from the routing table despite being in the BGP table, and the show ip bgp dampened-paths command listing those routes. Option A is incorrect because dampening does not affect the neighbor state. Option E is incorrect because the prefix-list is not directly related to dampening.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The BGP neighbor state flaps between Established and Idle.
Why it's wrong here
Neighbor state flapping is caused by connectivity issues, not dampening.
- ✓
The show ip bgp command displays the route with a 'd' status code.
Why this is correct
The 'd' status code indicates the route is dampened.
- ✓
The route is present in the BGP table but missing from the IP routing table.
Why this is correct
Dampened routes are suppressed and not installed in the routing table.
- ✓
The show ip bgp dampened-paths command shows the suppressed routes.
Why this is correct
This command specifically lists routes that are currently dampened.
- ✗
The show ip prefix-list command indicates that routes are being filtered.
Why it's wrong here
Prefix-list filtering is separate from route dampening.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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