The answer is that the metric-type 1 keyword makes redistributed RIP routes become OSPF Type 1 external LSAs, where the final metric equals the sum of the external metric (50) plus the internal OSPF cost to the ASBR. This is because Type 1 external routes add the internal path cost to the redistributed metric, providing a more accurate end-to-end cost, whereas the default Type 2 uses only the external metric regardless of distance to the ASBR. On the Cisco CCNP ENARSI 300-410 exam, this distinction tests your understanding of OSPF redistribution behavior and is a common trap: many candidates forget that Type 1 includes internal cost, while Type 2 does not. A reliable memory tip is “Type 1 adds the internal journey,” so when you see metric-type 1, think of the metric as a cumulative total from the source to the destination.
300-410 Route Redistribution Practice Question
This 300-410 practice question tests your understanding of route redistribution. 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.
Examine this partial configuration on Router R3:
router ospf 1
redistribute rip subnets metric-type 1 metric 50
What is the effect of the 'metric-type 1' keyword?
Redistributed RIP routes become OSPF Type 1 external LSAs, and the metric is the sum of the external metric (50) plus the internal OSPF cost to the ASBR.
Type 1 external LSAs add internal OSPF cost to the external metric.
B
Redistributed RIP routes become OSPF Type 2 external LSAs with a fixed metric of 50.
Why wrong: The metric-type 1 overrides the default Type 2.
C
The 'metric-type 1' is ignored because the 'metric' keyword is also used.
Why wrong: Both keywords are valid and work together.
D
The redistributed routes will have a metric of 50 and will not be affected by internal OSPF cost.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Redistributed RIP routes become OSPF Type 1 external LSAs, and the metric is the sum of the external metric (50) plus the internal OSPF cost to the ASBR.
The metric-type 1 keyword makes the redistributed routes Type 1 external LSAs, which add the internal OSPF cost to the external metric. Type 2 (default) does not add internal cost.
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.
✓
Redistributed RIP routes become OSPF Type 1 external LSAs, and the metric is the sum of the external metric (50) plus the internal OSPF cost to the ASBR.
Why this is correct
Type 1 external LSAs add internal OSPF cost to the external metric.
The 'metric-type 1' is ignored because the 'metric' keyword is also used.
Why it's wrong here
Both keywords are valid and work together.
✗
The redistributed routes will have a metric of 50 and will not be affected by internal OSPF cost.
Why it's wrong here
That describes Type 2, not Type 1.
Common exam traps
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
Both keywords are valid and work together.
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 Redistribution — This question tests Route Redistribution — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: Redistributed RIP routes become OSPF Type 1 external LSAs, and the metric is the sum of the external metric (50) plus the internal OSPF cost to the ASBR. — The metric-type 1 keyword makes the redistributed routes Type 1 external LSAs, which add the internal OSPF cost to the external metric. Type 2 (default) does not add internal cost.
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.
What is the key concept behind this question?
OSPF neighbours must agree on key parameters.
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.