The answer is that the IPsec tunnel is up and EIGRP is exchanging routes over the tunnel. This is correct because the `show ip route 192.168.2.0` output reveals a route learned via EIGRP with a next hop of 10.0.0.2 reachable through Tunnel0, and the last update was only 23 seconds ago—proof that the tunnel interface is active and EIGRP hello packets are successfully traversing the encrypted path. On the Cisco CCNP ENARSI 300-410 exam, this scenario tests your ability to verify IPsec tunnel and EIGRP routing integration; a common trap is mistaking a static route or a route via a physical interface for a working VPN, but the presence of Tunnel0 as the outgoing interface and a recent EIGRP update confirms dynamic routing is functioning. Remember the memory tip: “Tunnel0 + EIGRP = VPN is up and routing.”
300-410 IPsec Site-to-Site VPN Practice Question
This 300-410 practice question tests your understanding of ipsec site-to-site vpn. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 to troubleshoot an IPsec Site-to-Site VPN issue:
R1# show ip route 192.168.2.0
Routing entry for 192.168.2.0/24
Known via "eigrp 100", distance 90, metric 2684416, type internal
Redistributing via eigrp 100
Last update from 10.0.0.2 on Tunnel0, 00:00:23 ago
Routing Descriptor Blocks:
* 10.0.0.2, from 10.0.0.2, via Tunnel0
Route metric is 2684416, traffic share count is 1
Total delay is 20000 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
What does this output indicate?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The IPsec tunnel is up and EIGRP is exchanging routes over the tunnel.
The output shows a route to 192.168.2.0/24 learned via EIGRP (distance 90) with the next hop 10.0.0.2 reachable through Tunnel0. The last update was 23 seconds ago, confirming the tunnel is up and EIGRP is actively exchanging routing information over the IPsec tunnel. This indicates the IPsec Site-to-Site VPN is functioning and dynamic routing is working correctly.
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 route to the remote LAN is not present, indicating a routing issue.
Why it's wrong here
The route is present and learned via EIGRP over Tunnel0.
✓
The IPsec tunnel is up and EIGRP is exchanging routes over the tunnel.
Why this is correct
The route is learned via EIGRP on Tunnel0, meaning the tunnel is operational and routing is working.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The route is using a static route, not a dynamic routing protocol.
The tunnel interface is down, causing the route to be unreachable.
Why it's wrong here
The route has a last update 23 seconds ago, indicating the tunnel is up.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that a route learned via a tunnel interface implies the tunnel is down or that dynamic routing is not functioning, but the presence of a recent update and valid next hop confirms the tunnel is operational.
Detailed technical explanation
How to think about this question
EIGRP over an IPsec tunnel uses the tunnel interface as the outgoing interface, and the next-hop IP (10.0.0.2) is the tunnel endpoint. The metric calculation includes delay (20000 microseconds) and bandwidth (100000 Kbit), which are typical for a tunnel interface. In real-world scenarios, if the IPsec tunnel goes down, EIGRP would remove the route after the hold timer expires (default 15 seconds), and the route would no longer appear in the routing table.
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.
IPsec Site-to-Site VPN — This question tests IPsec Site-to-Site VPN — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The IPsec tunnel is up and EIGRP is exchanging routes over the tunnel. — The output shows a route to 192.168.2.0/24 learned via EIGRP (distance 90) with the next hop 10.0.0.2 reachable through Tunnel0. The last update was 23 seconds ago, confirming the tunnel is up and EIGRP is actively exchanging routing information over the IPsec tunnel. This indicates the IPsec Site-to-Site VPN is functioning and dynamic routing is working correctly.
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.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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