hardMultiple ChoiceObjective-mapped
300-410 Practice Question: Runs the following command to troubleshoot a…
A network engineer runs the following command to troubleshoot a VRF-Lite CoPP issue:
R1# show policy-map control-plane input class CoPP-ACL vrf CUSTOMER_I
Output: Class-map: CoPP-ACL (match-all) 0 packets, 0 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: access-group 100 police: cir 8000 bps, bc 1500 bytes, be 1500 bytes conformed 0 packets, 0 bytes; actions: transmit exceeded 0 packets, 0 bytes; actions: drop violated 0 packets, 0 bytes; actions: drop
What does this output indicate?
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 CoPP policy is rate-limiting traffic to 8000 bps, but no traffic has matched the class yet.
The 'show policy-map control-plane input class vrf' command displays CoPP policy statistics for a specific VRF. The output shows class CoPP-ACL matching access-group 100, with a police rate of 8000 bps. All counters are zero, indicating no traffic has matched this class. This could mean the ACL is not matching any packets, or no traffic is being sent to the control plane for this VRF.
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 CoPP policy is dropping all packets that match access-group 100.
Why it's wrong here
Incorrect. The conformed action is 'transmit', and no packets have exceeded or violated.
- ✓
The CoPP policy is rate-limiting traffic to 8000 bps, but no traffic has matched the class yet.
Why this is correct
Correct. The police rate is 8000 bps, but all counters are zero, so no matching traffic has been seen.
- ✗
The CoPP policy has matched many packets and is dropping them due to exceeding the rate.
Why it's wrong here
Incorrect. All counters are zero, so no packets have matched.
- ✗
The CoPP policy is not applied to the control plane for this VRF.
Why it's wrong here
Incorrect. The output shows the policy-map is applied to the control-plane input.
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Introduction to ENARSI Exam and Network Fundamentals
Key term
MPLS Layer 3 VPN
A technology that uses Multiprotocol Label Switching to create secure, scalable virtual private networks that connect multiple sites at the network layer, where the service provider manages routing between customer sites.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 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 300-410 exam.