- A
NetFlow is fully enabled for both ingress and egress traffic.
Why wrong: Egress is disabled.
- B
NetFlow is only monitoring incoming traffic on this interface.
Ingress is enabled, egress is disabled.
- C
NetFlow is not configured on this interface.
Why wrong: It is enabled for ingress.
- D
NetFlow is only monitoring MPLS traffic.
Why wrong: MPLS monitoring is disabled.
Question 1,894 of 2,152
How to Read 'show flow interface' Output on Cisco IOS
This 300-410 practice question tests your understanding of device management. Examine the command output carefully: the correct answer depends on what the output actually shows, not on general recall alone. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A network engineer runs the following command on Router R1:
R1# show flow interface GigabitEthernet0/0 Interface GigabitEthernet0/0
FNF: enabled Ingress IPV4/IPV6 flow monitoring: enabled Exporter: EXPORTER1 Monitor: MONITOR1 Egress IPV4/IPV6 flow monitoring: disabled Ingress MPLS flow monitoring: disabled Egress MPLS flow monitoring: disabled
Based on this output, what is the state of NetFlow on this interface?
Quick Answer
The answer is that NetFlow is only monitoring incoming traffic on this interface. This is correct because the show flow interface output explicitly shows “Ingress IPV4/IPV6 flow monitoring: enabled” with an exporter and monitor assigned, while “Egress IPV4/IPV6 flow monitoring: disabled” confirms no outbound data is being collected. On the Cisco CCNP ENARSI 300-410 exam, this command tests your ability to interpret NetFlow operational state from the CLI, often appearing in troubleshooting or configuration verification scenarios. A common trap is assuming that “FNF: enabled” alone means full bidirectional monitoring, but you must check the ingress and egress lines separately. Remember the memory tip: “Ingress is in, egress is out—check both lines to leave no doubt.”
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
✓
NetFlow is only monitoring incoming traffic on this interface.
The output shows that ingress IPv4/IPv6 flow monitoring is enabled with an exporter and monitor configured, while egress IPv4/IPv6 flow monitoring is disabled. This means NetFlow is only monitoring incoming traffic on the interface, not outgoing traffic. The FNF (Flexible NetFlow) status confirms NetFlow is operational, but only for ingress direction.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
NetFlow is fully enabled for both ingress and egress traffic.
Why it's wrong here
Egress is disabled.
- ✓
NetFlow is only monitoring incoming traffic on this interface.
Why this is correct
Ingress is enabled, egress is disabled.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
NetFlow is not configured on this interface.
Why it's wrong here
It is enabled for ingress.
- ✗
NetFlow is only monitoring MPLS traffic.
Why it's wrong here
MPLS monitoring is disabled.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates see 'FNF: enabled' and assume full bidirectional NetFlow, missing the specific ingress/egress status lines that reveal only one direction is active.
Detailed technical explanation
How to think about this question
Flexible NetFlow (FNF) allows separate configuration of ingress and egress monitoring per interface, as shown by the distinct status lines for each direction. The 'Exporter: EXPORTER1' and 'Monitor: MONITOR1' lines indicate that a flow exporter (defining destination and transport protocol, typically UDP 2055) and a flow monitor (defining match and collect fields) are applied. In real-world scenarios, ingress-only monitoring is common for traffic analysis without the overhead of egress flows, but it can miss asymmetric routing effects.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 300-410 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this 300-410 question test?
Device Management — This question tests Device Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: NetFlow is only monitoring incoming traffic on this interface. — The output shows that ingress IPv4/IPv6 flow monitoring is enabled with an exporter and monitor configured, while egress IPv4/IPv6 flow monitoring is disabled. This means NetFlow is only monitoring incoming traffic on the interface, not outgoing traffic. The FNF (Flexible NetFlow) status confirms NetFlow is operational, but only for ingress direction.
What should I do if I get this 300-410 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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