The answer is show interfaces tunnel 0 and show ipv6 interface tunnel 0. These two commands are correct because they verify different layers of the tunnel’s operational status: the first checks the interface’s line protocol and encapsulation, confirming the tunnel is physically up/up, while the second confirms IPv6 is enabled and that the IPv6 address and link-local address are properly assigned, ensuring IPv6 traffic can traverse the tunnel. On the Cisco CCNP ENARSI 300-410 exam, this question tests your ability to distinguish between general interface verification and IPv6-specific verification for manually configured tunnels like 6in4 or GRE. A common trap is choosing show ip interface brief, which only shows a summary status without IPv6 details. Remember the memory tip: “General for up/up, IPv6 for traffic flow”—use show interfaces for the physical state and show ipv6 interface for the protocol readiness.
300-410 IPv6 Tunneling Techniques Practice Question
This 300-410 practice question tests your understanding of ipv6 tunneling techniques. 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.
Which TWO commands can be used to verify the operational status of a manually configured IPv6 tunnel on a Cisco IOS router? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
show interfaces tunnel 0
The 'show interfaces tunnel 0' command displays the operational status, line protocol state, and encapsulation details of the tunnel interface, which directly verifies whether the manually configured IPv6 tunnel is up/up. The 'show ipv6 interface tunnel 0' command shows IPv6-specific information such as the IPv6 address, link-local address, and whether IPv6 is enabled on the tunnel interface, confirming that IPv6 traffic can be processed. Both commands provide essential operational verification for a manually configured IPv6 tunnel, such as a 6in4 or GRE tunnel carrying IPv6.
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.
✓
show interfaces tunnel 0
Why this is correct
Displays tunnel interface status, encapsulation, and counters.
Related concept
Read the scenario before looking for a memorised answer.
Read the scenario before looking for a memorised answer.
✗
show ipv6 route
Why it's wrong here
Shows IPv6 routing table, not tunnel interface status.
✗
show ipv6 tunnel 0
Why it's wrong here
This is not a valid Cisco IOS command.
✗
show running-config interface tunnel 0
Why it's wrong here
Shows configuration, not operational status.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between configuration verification commands (like 'show running-config') and operational status commands (like 'show interfaces' and 'show ipv6 interface'), leading candidates to mistakenly choose 'show running-config interface tunnel 0' as a verification tool for operational status.
Trap categories for this question
Command / output trap
Shows IPv6 routing table, not tunnel interface status.
Detailed technical explanation
How to think about this question
Manually configured IPv6 tunnels, such as 6in4 (IPv6 over IPv4) defined in RFC 4213, encapsulate IPv6 packets within IPv4 headers using protocol type 41. The 'show interfaces tunnel 0' output includes the tunnel source/destination, encapsulation type (e.g., Tunnel6), and the line protocol state, which reflects the reachability of the tunnel destination. In real-world scenarios, if the tunnel destination becomes unreachable, the line protocol will show 'down', and 'show ipv6 interface tunnel 0' will indicate that IPv6 is not enabled on the interface, even if the configuration is correct.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
IPv6 Tunneling Techniques — This question tests IPv6 Tunneling Techniques — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: show interfaces tunnel 0 — The 'show interfaces tunnel 0' command displays the operational status, line protocol state, and encapsulation details of the tunnel interface, which directly verifies whether the manually configured IPv6 tunnel is up/up. The 'show ipv6 interface tunnel 0' command shows IPv6-specific information such as the IPv6 address, link-local address, and whether IPv6 is enabled on the tunnel interface, confirming that IPv6 traffic can be processed. Both commands provide essential operational verification for a manually configured IPv6 tunnel, such as a 6in4 or GRE tunnel carrying IPv6.
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.
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 →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.