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350-501 · Question #51
350-501 Question #51: Real Exam Question with Answer & Explanation
The correct answer is B: It ensures that an unstable network with a large amount of updates does not completely consume. LSA packet pacing prevents a sudden influx of LSA updates from overwhelming router resources during periods of network instability by controlling the rate at which LSUs are transmitted.
Networking
Question
Which function of the LSA packet pacing feature is true?
Options
- AIt determines the minimum amount of time that must pass before accepting the same LSA
- BIt ensures that an unstable network with a large amount of updates does not completely consume
- CIt ensures that an unstable link does not result in uncontrolled routing churn which avoids
- DIt reduces routing protocol churn by reducing network updates during periods of network
Explanation
LSA packet pacing prevents a sudden influx of LSA updates from overwhelming router resources during periods of network instability by controlling the rate at which LSUs are transmitted.
Common mistakes.
- A. This describes LSA throttling or holddown timers, which manage the acceptance and re-origination of LSAs, not the rate of their transmission.
- C. This describes SPF (Shortest Path First) throttling or route dampening, which is concerned with reducing routing churn caused by unstable links, rather than the raw transmission rate of LSAs.
- D. LSA packet pacing manages the transmission rate of LSAs; while it contributes to network stability, it doesn't directly reduce the amount of updates or delay them in the same way SPF timers do to prevent churn.
Concept tested. LSA packet pacing function
Topics
#OSPF#LSA Pacing#Routing Protocol Stability#Network Performance
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