Question 1,646 of 2,152
SPAN, RSPAN, and ERSPANmediumMultiple ChoiceObjective-mapped

How to Interpret ERSPAN Destination Session Output

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 router R3:

R3# show monitor session 5

Session 5 --------- Type : ERSPAN Destination Session Status : Admin Enabled Source IP : 10.0.0.2 Destination Ports : Gi0/1

Encapsulation : Native

Ingress : Disabled ERSPAN ID : 100

Based on this output, which statement is correct?

Quick Answer

The correct statement is that the ERSPAN destination session receives traffic from source IP 10.0.0.2 and sends it to Gi0/1. This is correct because an ERSPAN destination session is configured to accept encapsulated mirrored traffic from a specified source IP—here, 10.0.0.2—using a unique ERSPAN ID of 100, then decapsulates that traffic and forwards the original frames out the designated destination port, Gi0/1, in native encapsulation. On the Cisco CCNP ENARSI 300-410 exam, interpreting ERSPAN session output tests your ability to distinguish between source and destination roles, as well as to read key fields like Source IP, Destination Ports, and ERSPAN ID. A common trap is confusing the source IP in a destination session with a source session’s monitor source; remember that in a destination session, the “Source IP” is where the encapsulated traffic arrives from, not where the original traffic originated. Memory tip: “Destination decaps—source IP is the sender, Gi0/1 is the receiver.”

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 ERSPAN destination session receives traffic from source IP 10.0.0.2 and sends it to Gi0/1.

This is an ERSPAN destination session. It receives ERSPAN-encapsulated traffic from source IP 10.0.0.2 with ERSPAN ID 100, decapsulates it, and sends the original mirrored traffic to destination port Gi0/1. The session is administratively enabled.

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 ERSPAN destination session receives traffic from source IP 10.0.0.2 and sends it to Gi0/1.

    Why this is correct

    The output shows source IP 10.0.0.2, destination port Gi0/1, and ERSPAN ID 100, confirming this.

    Related concept

    Read the scenario before looking for a memorised answer.

  • The ERSPAN destination session sends traffic to source IP 10.0.0.2.

    Why it's wrong here

    The source IP is where traffic comes from, not where it is sent.

  • The session is an RSPAN destination session because it uses a destination port.

    Why it's wrong here

    The type is 'ERSPAN Destination Session', not RSPAN.

  • The session is misconfigured because the destination port has ingress disabled.

    Why it's wrong here

    Ingress disabled is normal for SPAN destination ports.

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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Related 300-410 practice-question pages

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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 ERSPAN destination session receives traffic from source IP 10.0.0.2 and sends it to Gi0/1. — This is an ERSPAN destination session. It receives ERSPAN-encapsulated traffic from source IP 10.0.0.2 with ERSPAN ID 100, decapsulates it, and sends the original mirrored traffic to destination port Gi0/1. The session is administratively enabled.

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.

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Same concept, more angles

2 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 on router R4: R4# show monitor session 9 Session 9 --------- Type : ERSPAN Source Session Status : Admin Disabled Source Ports : Both : Gi0/2 Destination IP : 192.168.2.20 Origin IP : 10.0.0.3 ERSPAN ID : 200 Based on this output, which statement is correct?

medium
  • A.The ERSPAN session is configured but not currently active because it is administratively disabled.
  • B.The ERSPAN session is actively mirroring traffic from Gi0/2 to 192.168.2.20.
  • C.The ERSPAN session is using RSPAN because the status is disabled.
  • D.The ERSPAN session is misconfigured because the origin IP is missing.

Why A: This is an ERSPAN source session that is administratively disabled. The configuration is present but not active. To enable it, the engineer must use the 'no shutdown' command under the session configuration.

Variation 2. A network engineer runs the following command on router R2: R2# show monitor session 4 Session 4 --------- Type : ERSPAN Source Session Status : Admin Enabled Source Ports : Both : Gi0/0 Destination IP : 192.168.1.10 Origin IP : 10.0.0.2 ERSPAN ID : 100 Based on this output, which statement is correct?

medium
  • A.The ERSPAN session is mirroring traffic from Gi0/0 to IP address 192.168.1.10 using ERSPAN ID 100.
  • B.The ERSPAN session is mirroring traffic from IP 192.168.1.10 to Gi0/0.
  • C.The ERSPAN session is using RSPAN encapsulation.
  • D.The ERSPAN session is disabled because the status is 'Admin Enabled'.

Why A: This is an ERSPAN source session. It mirrors traffic from source port Gi0/0 and encapsulates it with an ERSPAN header, sending it to destination IP 192.168.1.10 with origin IP 10.0.0.2 and ERSPAN ID 100. The session is administratively enabled.

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Last reviewed: Jun 19, 2026

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