Question 1,423 of 2,152

IP SLA →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is a misconfigured track object that is not properly linked to the IP SLA or uses an incorrect threshold condition. When IP SLA 10 shows as 'Active' but the route is not installed, the most common cause is that the track object references the IP SLA with a command like `track 1 ip sla 10 reachability`, yet the static route points to a different track number or the track object itself is missing the correct IP SLA association. On the Cisco CCNP ENARSI 300-410 exam, this scenario tests your understanding of the relationship between IP SLA probes, track objects, and conditional static routing—a classic trap is assuming an active IP SLA automatically installs the route. Remember that the track object acts as the bridge: the IP SLA feeds state into the track, and the static route only reacts to the track’s up/down status. A helpful memory tip is “Track the track, not the SLA”—verify the track object’s configuration and its link to the static route before blaming the probe itself.

300-410 IP SLA Practice Question

This 300-410 practice question tests your understanding of ip sla. 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 is troubleshooting a site-to-site VPN that intermittently drops. The engineer configured IP SLA 10 to track reachability of the remote LAN gateway (10.1.2.1) using ICMP echo probes every 5 seconds. The IP SLA is used in a static route to influence failover. The engineer notices that the IP SLA state shows 'Active' but the tracked route is not installed. What is the most likely cause?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

Question 1mediummultiple choice

Read the full VPN explanation →

A
The IP SLA probe is sending packets to the wrong destination IP.
Why wrong: The IP SLA shows 'Active', so the probe is reaching the destination; the destination IP is likely correct.
B
The track object is configured with 'ip sla 10 reachability' but the static route references the track object incorrectly.
If the track object is not properly linked (e.g., 'track 1 ip sla 10 reachability' missing), or the static route uses a different track number, the route will not be installed even though the IP SLA is active.
C
The IP SLA probe frequency is too high, causing the router to ignore the results.
Why wrong: A high frequency does not cause the router to ignore results; it may increase CPU but does not prevent route installation.
D
The remote gateway is not responding to ICMP echo requests due to firewall rules.
Why wrong: If the remote gateway were not responding, the IP SLA would show 'Timeout' or 'Down', not 'Active'.

Full breakdown with real-world context →

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 track object is configured with 'ip sla 10 reachability' but the static route references the track object incorrectly.

The IP SLA is active, but the tracked object might not be configured correctly to react to the IP SLA state. The issue is that the track object is not linked to the IP SLA or the threshold is misconfigured.

Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

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 IP SLA probe is sending packets to the wrong destination IP.
Why it's wrong here
The IP SLA shows 'Active', so the probe is reaching the destination; the destination IP is likely correct.
✓
The track object is configured with 'ip sla 10 reachability' but the static route references the track object incorrectly.
Why this is correct
If the track object is not properly linked (e.g., 'track 1 ip sla 10 reachability' missing), or the static route uses a different track number, the route will not be installed even though the IP SLA is active.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
The IP SLA probe frequency is too high, causing the router to ignore the results.
Why it's wrong here
A high frequency does not cause the router to ignore results; it may increase CPU but does not prevent route installation.
✗
The remote gateway is not responding to ICMP echo requests due to firewall rules.
Why it's wrong here
If the remote gateway were not responding, the IP SLA would show 'Timeout' or 'Down', not 'Active'.

Common exam traps

Common exam trap: NAT rules depend on direction and matching traffic

NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.

Trap categories for this question

Command / output trap
The IP SLA shows 'Active', so the probe is reaching the destination; the destination IP is likely correct.

Detailed technical explanation

How to think about this question

NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.

KKey Concepts to Remember

Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.

TExam Day Tips

Identify inside and outside interfaces first.
Check whether the scenario needs static NAT, dynamic NAT or PAT.
Do not confuse NAT matching ACLs with normal packet-filtering intent.

Key takeaway

NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.

Real-world example

How this comes up in practice

A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.

What to study next

Got this wrong? Here's your next step.

Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 300-410 NAT questions on configuration and troubleshooting.

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FAQ

Questions learners often ask

What does this 300-410 question test?

IP SLA — This question tests IP SLA — Static NAT maps one inside address to one outside address..

What is the correct answer to this question?

The correct answer is: The track object is configured with 'ip sla 10 reachability' but the static route references the track object incorrectly. — The IP SLA is active, but the tracked object might not be configured correctly to react to the IP SLA state. The issue is that the track object is not linked to the IP SLA or the threshold is misconfigured.

What should I do if I get this 300-410 question wrong?

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Static NAT maps one inside address to one outside address.

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