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300-410 Practice Question: In a CoPP policy, what is the effect of the…
In a CoPP policy, what is the effect of the 'violate-action' parameter in the police command?
⚠ Common exam trap
Cisco often tests the distinction between 'exceed-action' and 'violate-action' in three-color policers, and the trap here is that candidates confuse the exceed-action (for packets within excess burst) with the violate-action (for packets beyond the excess burst), especially in single-rate policers where both are configurable.
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
✓
It specifies the action for packets that exceed both the conform rate and the excess burst.
In a Control Plane Policing (CoPP) policy, the 'violate-action' parameter in the police command specifies the action taken for packets that exceed both the conform rate and the excess burst (i.e., packets that are beyond the peak rate). This is part of a three-color policer (conform, exceed, violate), where violate-action handles the most severe traffic violations, such as dropping or remarking packets that exceed the excess burst.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It specifies the action for packets that exceed the conform rate but are within the excess burst.
Why it's wrong here
Incorrect. That is the exceed-action.
- ✓
It specifies the action for packets that exceed both the conform rate and the excess burst.
Why this is correct
Correct. The violate-action applies to packets that exceed the excess burst (i.e., violate the token bucket).
- ✗
It specifies the action for packets that are below the conform rate.
Why it's wrong here
Incorrect. That is the conform-action.
- ✗
It is only used in two-rate policers and is ignored in single-rate policers.
Why it's wrong here
Incorrect. The violate-action can be used in both single-rate and two-rate policers.
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