Question 495 of 2,152

VRF-Lite →mediumMultiple ChoiceObjective-mapped

EIGRP Topology in VRF

This 300-410 practice question tests your understanding of vrf-lite. 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 a VRF-Lite issue:

R1# show ip eigrp vrf CUSTOMER_B topology 10.1.1.0/24

Output: IP-EIGRP (AS 100): Topology entry for 10.1.1.0/24 for VRF CUSTOMER_B State is Passive, Query origin flag is 1, 1 Successor(s), FD is 131072 Routing Descriptor Blocks:

10.1.1.1 (GigabitEthernet0/1), from 10.1.1.1, Send flag is 0x0

Composite metric is (131072/128256), Route is Internal Vector metric: Minimum bandwidth is 100000 Kbit Total delay is 100 microseconds Reliability is 255/255 Load is 1/255 Minimum MTU is 1500 Hop count is 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.

A
The route 10.1.1.0/24 is in Active state, indicating an EIGRP query is in progress.
Why wrong: Incorrect. The state is Passive, not Active.
B
The route 10.1.1.0/24 has one successor with a feasible distance of 131072 and is learned via 10.1.1.1.
Correct. The output shows one successor, FD 131072, and next hop 10.1.1.1.
C
The route 10.1.1.0/24 is an external EIGRP route redistributed into the VRF.
Why wrong: Incorrect. The output says 'Route is Internal', not external.
D
The route 10.1.1.0/24 has multiple successors due to equal-cost paths.
Why wrong: Incorrect. There is only one successor listed in the Routing Descriptor Blocks.

Full breakdown with real-world context →

Quick Answer

The answer is that the route 10.1.1.0/24 has one successor with a feasible distance of 131072 and is learned via 10.1.1.1. This is correct because the EIGRP topology verification VRF output explicitly shows the route in a Passive state with a single Routing Descriptor Block, indicating a stable, loop-free path where the Feasible Distance (FD) of 131072 represents the total metric to the destination, and the next hop 10.1.1.1 is the sole successor. On the Cisco CCNP ENARSI 300-410 exam, this command tests your ability to interpret EIGRP topology entries within a VRF-Lite context, often appearing in troubleshooting scenarios where you must distinguish between Passive and Active states or identify the number of successors. A common trap is confusing the reported distance (128256) with the feasible distance; remember that the FD is always the first metric in the parentheses. Memory tip: "Passive means no query, one successor means one path—check the FD, not the RD, for the true cost."

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 route 10.1.1.0/24 has one successor with a feasible distance of 131072 and is learned via 10.1.1.1.

The 'show ip eigrp vrf topology' command displays the EIGRP topology table entry for a specific prefix within a VRF. The output shows the route 10.1.1.0/24 is in Passive state, meaning no EIGRP query is pending. It has one successor (the best path) with a feasible distance (FD) of 131072. The next hop is 10.1.1.1 via GigabitEthernet0/1.

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 10.1.1.0/24 is in Active state, indicating an EIGRP query is in progress.
Why it's wrong here
Incorrect. The state is Passive, not Active.
✓
The route 10.1.1.0/24 has one successor with a feasible distance of 131072 and is learned via 10.1.1.1.
Why this is correct
Correct. The output shows one successor, FD 131072, and next hop 10.1.1.1.
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 10.1.1.0/24 is an external EIGRP route redistributed into the VRF.
Why it's wrong here
Incorrect. The output says 'Route is Internal', not external.
✗
The route 10.1.1.0/24 has multiple successors due to equal-cost paths.
Why it's wrong here
Incorrect. There is only one successor listed in the Routing Descriptor Blocks.

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.

Trap categories for this question

Command / output trap
Incorrect. The output says 'Route is Internal', not external.

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.

Visual reference

Quick reference

Routing Protocol Comparison

Protocol	Metric	Max Hops	Algorithm	Type
RIP v2	Hop count	15	Bellman-Ford	Distance vector
OSPF	Cost (bandwidth)	Unlimited	Dijkstra (SPF)	Link state
EIGRP	Composite metric	Unlimited	DUAL	Hybrid
IS-IS	Cost	Unlimited	Dijkstra	Link state
BGP	Policy / attributes	Unlimited	Path vector	Path vector

RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.

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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FAQ

Questions learners often ask

What does this 300-410 question test?

VRF-Lite — This question tests VRF-Lite — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: The route 10.1.1.0/24 has one successor with a feasible distance of 131072 and is learned via 10.1.1.1. — The 'show ip eigrp vrf topology' command displays the EIGRP topology table entry for a specific prefix within a VRF. The output shows the route 10.1.1.0/24 is in Passive state, meaning no EIGRP query is pending. It has one successor (the best path) with a feasible distance (FD) of 131072. The next hop is 10.1.1.1 via GigabitEthernet0/1.

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: "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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