The answer is that the route map sets the metric type but does not also set the metric, which causes OSPF to ignore the type-1 instruction. When redistributing EIGRP routes into OSPF, the default metric type is type-2, and for the route map set metric OSPF type 1 to take effect, both the metric value and the metric type must be explicitly configured within the same route-map clause. This is a common trap on the Cisco CCNP ENARSI 300-410 exam, testing your understanding that OSPF requires a defined metric for type-1 to override the default type-2 behavior; without it, the router silently falls back to type-2. The exam often presents this scenario to see if you recognize that setting only the type is insufficient. Remember the memory tip: "Type-1 needs a number—set the metric or it’s a slumber."
300-410 Route Maps and Route Filtering Practice Question
This 300-410 practice question tests your understanding of route maps and route filtering. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
An engineer configures mutual redistribution between OSPF and EIGRP. A route map is used to set the OSPF metric type to type-1 when redistributing EIGRP routes into OSPF. However, the redistributed routes appear as type-2 in the OSPF database. Which is the most likely explanation?
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.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The route map sets the metric type but does not set the metric; OSPF requires both to be set for type-1 to work.
When redistributing into OSPF, the default metric type is type-2. If the route map sets the metric type but does not also set the metric, OSPF may ignore the metric type setting because the metric is not specified. In some IOS versions, the route map must set both the metric and metric type for the metric type to take effect.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
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 map sets the metric type but does not set the metric; OSPF requires both to be set for type-1 to work.
Why this is correct
OSPF may ignore the metric type if the metric is not explicitly set in the route map.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Trap categories for this question
Keyword trap
The subnets keyword only affects the network mask, not the metric type.
Command / output trap
Route maps are applied to the redistribute command, not the process.
Detailed technical explanation
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
OSPF neighbours must agree on key parameters.
Router ID selection can affect neighbour relationships and LSDB output.
OSPF cost influences the preferred path.
A route can appear in OSPF information but not become the installed route.
TExam Day Tips
→Check area mismatch first when OSPF adjacency fails.
→Review passive interfaces when a network is advertised but no neighbour forms.
→Use show ip ospf neighbor and show ip route clues carefully.
Key takeaway
OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 300-410 question in full detail.
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 300-410 OSPF questions on adjacency and route selection.
Route Maps and Route Filtering — This question tests Route Maps and Route Filtering — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: The route map sets the metric type but does not set the metric; OSPF requires both to be set for type-1 to work. — When redistributing into OSPF, the default metric type is type-2. If the route map sets the metric type but does not also set the metric, OSPF may ignore the metric type setting because the metric is not specified. In some IOS versions, the route map must set both the metric and metric type for the metric type to take effect.
What should I do if I get this 300-410 question wrong?
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related 300-410 OSPF questions on adjacency and route selection.
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?
OSPF neighbours must agree on key parameters.
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