JNCIP-SP: Juniper Networks Certified Professional – Service Provider (2022) — Question 32

The link between CE1 and PE1 has a history of flapping. To avoid the impact that flapping causes to the network, you decide to use route damping.
Which statement is correct in this scenario?

Answer options

• A. Dampening is enabled on interfaces.
• B. Dampened routes decay at a sliding rate known as half-life.
• C. Routes become dampened when the configured max-suppress value is reached.
• D. Dampened routes become active when their figure of merit drops below the reuse value.

Correct answer: D

Explanation

Option D is correct because dampened routes will only become active again once their figure of merit is lower than the reuse value, which ensures stability. Option A is incorrect as dampening is not enabled on interfaces directly. Option B is misleading since the decay of dampened routes is based on specific parameters, not merely a sliding rate. Option C incorrectly suggests that routes are dampened upon reaching the max-suppress value, rather than the merit system that governs their state.