- A
The SPAN session is configured correctly and will forward traffic received on Gi0/10 into the network.
Ingress enabled on the destination port allows traffic received on that port to be forwarded, which is atypical and can cause issues.
- B
The SPAN session is misconfigured because source ports cannot be monitored in both directions.
Why wrong: Both directions are valid for SPAN source ports.
- C
The SPAN session is using RSPAN because the destination port has ingress enabled.
Why wrong: RSPAN uses a VLAN as destination, not a port. Ingress enabled is unrelated to RSPAN.
- D
The SPAN session is disabled because the destination port has ingress enabled.
Why wrong: The session is still active; ingress enabled does not disable the session.
Question 1,204 of 2,152
How to Interpret Local SPAN Session Output: Ingress Enabled on Destination Port
This 300-410 practice question tests your understanding of span, rspan, and erspan. 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 switch SW4:
SW4# show monitor session 6
Session 6 --------- Type : Local Session Source Ports : Both : Gi0/8, Gi0/9 Destination Ports : Gi0/10
Encapsulation : Native
Ingress : Enabled
Based on this output, which statement is correct?
Quick Answer
The correct statement is that the SPAN session is configured correctly and will forward traffic received on Gi0/10 into the network. This is because the output shows ingress is enabled on the destination port, which means the switch will process and forward any packets arriving on Gi0/10 just like a normal access port, rather than dropping them as is standard for a SPAN destination. On the Cisco CCNP ENARSI 300-410 exam, this scenario tests your understanding of how local SPAN sessions handle destination port behavior—specifically, that enabling ingress on the destination port breaks the typical one-way mirroring rule and can introduce loops or unwanted traffic. A common trap is assuming the destination port only receives mirrored traffic; in reality, with ingress enabled, it becomes a fully functional switch port. Memory tip: "Ingress on destination = traffic injection risk," so remember that a SPAN destination should normally have ingress disabled to keep mirrored traffic isolated.
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 SPAN session is configured correctly and will forward traffic received on Gi0/10 into the network.
This is a local SPAN session with source ports Gi0/8 and Gi0/9, and destination port Gi0/10. The destination port has ingress enabled, which means traffic received on Gi0/10 will be processed and forwarded by the switch. This is unusual because SPAN destination ports typically have ingress disabled to prevent loops and forwarding of mirrored traffic. This configuration can cause network issues.
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.
- ✓
The SPAN session is configured correctly and will forward traffic received on Gi0/10 into the network.
Why this is correct
Ingress enabled on the destination port allows traffic received on that port to be forwarded, which is atypical and can cause issues.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The SPAN session is misconfigured because source ports cannot be monitored in both directions.
Why it's wrong here
Both directions are valid for SPAN source ports.
- ✗
The SPAN session is using RSPAN because the destination port has ingress enabled.
Why it's wrong here
RSPAN uses a VLAN as destination, not a port. Ingress enabled is unrelated to RSPAN.
- ✗
The SPAN session is disabled because the destination port has ingress enabled.
Why it's wrong here
The session is still active; ingress enabled does not disable the session.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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SPAN, RSPAN, and ERSPAN — study guide chapter
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FAQ
Questions learners often ask
What does this 300-410 question test?
SPAN, RSPAN, and ERSPAN — This question tests SPAN, RSPAN, and ERSPAN — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The SPAN session is configured correctly and will forward traffic received on Gi0/10 into the network. — This is a local SPAN session with source ports Gi0/8 and Gi0/9, and destination port Gi0/10. The destination port has ingress enabled, which means traffic received on Gi0/10 will be processed and forwarded by the switch. This is unusual because SPAN destination ports typically have ingress disabled to prevent loops and forwarding of mirrored traffic. This configuration can cause network issues.
What should I do if I get this 300-410 question wrong?
Identify which 300-410 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
4 more ways this is tested on 300-410
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A network engineer runs the following command to troubleshoot a SPAN issue: R1# show monitor session 1 detail Session 1 --------- Type : Local Session Source Ports : Both : Gi0/0 Destination Ports : Gi0/1 Encapsulation : Native Ingress : Disabled What does this output indicate?
medium- ✓ A.The session is correctly configured to send traffic from Gi0/0 to Gi0/1.
- B.The session is misconfigured because the destination port should have ingress enabled.
- C.The session is misconfigured because the source port must be a VLAN.
- D.The session is misconfigured because encapsulation must be set to 'replicate'.
Why A: The output shows a local SPAN session with source port Gi0/0 (both directions) and destination port Gi0/1. The destination port is configured with native encapsulation and no ingress traffic is allowed.
Variation 2. A network engineer runs the following command to troubleshoot a SPAN issue: R1# debug monitor session 1 *Mar 1 00:00:01.123: MONITOR: Session 1: Packet captured on Gi0/0, forwarded to Gi0/1 *Mar 1 00:00:02.456: MONITOR: Session 1: Packet captured on Gi0/0, forwarded to Gi0/1 What does this output indicate?
medium- ✓ A.The SPAN session is correctly forwarding packets from Gi0/0 to Gi0/1.
- B.The SPAN session is misconfigured because packets should not be forwarded.
- C.The SPAN session is misconfigured because the debug output shows errors.
- D.The SPAN session is misconfigured because the destination port is not specified.
Why A: The debug output shows that packets captured on source port Gi0/0 are being forwarded to destination port Gi0/1 for session 1. This indicates that the SPAN session is operational.
Variation 3. A network engineer runs the following command on switch SW5: SW5# show monitor session 7 Session 7 --------- Type : Local Session Source Ports : Both : Gi0/11 Destination Ports : Gi0/12 Encapsulation : Replicate Ingress : Disabled Based on this output, which statement is correct?
medium- ✓ A.The SPAN session will replicate the original VLAN tag on the mirrored traffic sent to Gi0/12.
- B.The SPAN session will strip the VLAN tag from the mirrored traffic.
- C.The SPAN session is using RSPAN because the encapsulation is set to Replicate.
- D.The SPAN session is misconfigured because encapsulation Replicate is not supported.
Why A: This is a local SPAN session with source port Gi0/11 and destination port Gi0/12. The encapsulation is set to 'Replicate', which means the mirrored traffic retains its original VLAN tag. This is typical when the destination port is a trunk port and the analyzer expects tagged traffic.
Variation 4. A network engineer runs the following command on switch SW1: SW1# show monitor session 1 Session 1 --------- Type : Local Session Source Ports : Both : Gi0/1, Gi0/2 Destination Ports : Gi0/3 Encapsulation : Native Ingress : Disabled Based on this output, which statement is correct?
medium- ✓ A.The SPAN session is monitoring traffic on Gi0/1 and Gi0/2 and sending it to Gi0/3.
- B.The SPAN session is monitoring traffic on Gi0/3 and sending it to Gi0/1 and Gi0/2.
- C.The SPAN session is using RSPAN because the destination port has ingress disabled.
- D.The SPAN session is not active because the destination port is not in forwarding state.
Why A: The output shows a local SPAN session with source ports Gi0/1 and Gi0/2, and destination port Gi0/3. The destination port is configured with native encapsulation and ingress is disabled, meaning traffic received on the destination port is not forwarded. The session is active and correctly configured.
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Last reviewed: Jun 19, 2026
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