- A
Enter EIGRP router configuration mode using the 'router eigrp <as-number>' command.
Correct: You must be in EIGRP configuration mode to issue the redistribute command.
- B
Configure a route-map under OSPF to match OSPF routes for redistribution.
Why wrong: Incorrect: A route-map is optional, not required, for redistribution.
- C
Use the 'redistribute eigrp <as-number>' command under OSPF router configuration mode.
Why wrong: Incorrect: This would redistribute EIGRP into OSPF, not OSPF into EIGRP.
- D
Set a seed metric for EIGRP using the 'default-metric' command or specify metric in the redistribute command.
Correct: EIGRP requires a seed metric; otherwise, routes are not advertised.
- E
Issue the 'default-information originate' command under OSPF to advertise redistributed routes.
Why wrong: Incorrect: This command is for originating a default route in OSPF, not for redistribution.
Quick Answer
The correct answer is that you must set a seed metric for EIGRP using the default-metric command or specify the metric directly in the redistribute command. This is required because EIGRP, unlike OSPF, has no default metric for redistributed routes; without an explicit metric value—comprising bandwidth, delay, reliability, load, and MTU—the redistributed OSPF routes will be rejected and never installed in the EIGRP topology table. On the Cisco CCNP ENARSI 300-410 exam, this question tests your understanding of redistribution mechanics and the critical difference in metric handling between protocols. A common trap is assuming you can redistribute under OSPF instead of EIGRP, or that a default metric is optional—both will cause redistribution to fail silently. Remember the memory tip: “EIGRP needs a seed to grow,” meaning you must always plant a metric when feeding routes into EIGRP from another protocol.
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.
Which TWO configuration steps are required to successfully redistribute OSPF routes into EIGRP on a Cisco router? (Choose TWO.)
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
Enter EIGRP router configuration mode using the 'router eigrp <as-number>' command.
To redistribute OSPF into EIGRP, you must enter EIGRP configuration mode and use the redistribute command. Additionally, you must set a seed metric for EIGRP because EIGRP does not have a default metric for redistributed routes. Option A is correct because you need to enter EIGRP router configuration. Option D is correct because you must set a metric (e.g., bandwidth, delay) for the redistributed routes. Option B is incorrect because you do not need to explicitly match routes in OSPF; you can redistribute all OSPF routes. Option C is incorrect because the redistribute command is under EIGRP, not OSPF. Option E is incorrect because the default-information originate command is for OSPF to inject a default route, not for redistribution.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enter EIGRP router configuration mode using the 'router eigrp <as-number>' command.
Why this is correct
Correct: You must be in EIGRP configuration mode to issue the redistribute command.
Related concept
Authentication checks who the user is.
- ✗
Configure a route-map under OSPF to match OSPF routes for redistribution.
Why it's wrong here
Incorrect: A route-map is optional, not required, for redistribution.
- ✗
Use the 'redistribute eigrp <as-number>' command under OSPF router configuration mode.
- ✓
Set a seed metric for EIGRP using the 'default-metric' command or specify metric in the redistribute command.
- ✗
Issue the 'default-information originate' command under OSPF to advertise redistributed routes.
Why it's wrong here
Incorrect: This command is for originating a default route in OSPF, not for redistribution.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Trap categories for this question
Command / output trap
Incorrect: This command is for originating a default route in OSPF, not for redistribution.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 300-410 questions on access control and AAA configuration.
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FAQ
Questions learners often ask
What does this 300-410 question test?
Route Redistribution — This question tests Route Redistribution — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Enter EIGRP router configuration mode using the 'router eigrp <as-number>' command. — To redistribute OSPF into EIGRP, you must enter EIGRP configuration mode and use the redistribute command. Additionally, you must set a seed metric for EIGRP because EIGRP does not have a default metric for redistributed routes. Option A is correct because you need to enter EIGRP router configuration. Option D is correct because you must set a metric (e.g., bandwidth, delay) for the redistributed routes. Option B is incorrect because you do not need to explicitly match routes in OSPF; you can redistribute all OSPF routes. Option C is incorrect because the redistribute command is under EIGRP, not OSPF. Option E is incorrect because the default-information originate command is for OSPF to inject a default route, not for redistribution.
What should I do if I get this 300-410 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 300-410 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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 →
Same concept, more angles
4 more ways this is tested on 300-410
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Consider the following partial configuration on Router R1: router eigrp 100 redistribute ospf 1 metric 10000 100 255 1 1500 router ospf 1 redistribute eigrp 100 subnets Which statement about this configuration is true?
medium- ✓ A.Redistributed OSPF routes into EIGRP will have a default metric of 10000 100 255 1 1500.
- B.OSPF routes redistributed into EIGRP will have a metric of 20 by default.
- C.EIGRP routes redistributed into OSPF will be Type 1 external LSAs.
- D.The 'subnets' keyword in OSPF redistribution is optional but recommended.
Why A: The configuration redistributes OSPF routes into EIGRP with specific bandwidth, delay, reliability, load, and MTU metrics. The 'subnets' keyword in OSPF redistribution ensures that all subnets (including classless prefixes) are redistributed. Without 'subnets', only classful networks are redistributed.
Variation 2. Given the following configuration on Router R2: router eigrp 200 redistribute ospf 1 metric 10000 100 255 1 1500 default-metric 10000 100 255 1 1500 What is the effect of having both the 'metric' keyword in the redistribute command and the 'default-metric' command?
medium- A.The 'metric' keyword is ignored; the default-metric is used for all redistributed routes.
- B.Both metrics are applied, causing a conflict and potential routing issues.
- ✓ C.The 'metric' keyword overrides the default-metric for routes redistributed from OSPF into EIGRP.
- D.The default-metric command is not needed and can be removed without any effect.
Why C: The 'metric' keyword in the redistribute command overrides the default-metric for that specific redistribution. The default-metric applies to all other redistribution without an explicit metric.
Variation 3. Given this configuration on Router R5: route-map OSPF-to-EIGRP permit 10 match ip address prefix-list EIGRP-ONLY set metric 10000 100 255 1 1500 ! router eigrp 100 redistribute ospf 1 route-map OSPF-to-EIGRP What is the purpose of the route-map in this configuration?
medium- A.The route-map sets the metric for all redistributed OSPF routes, but does not filter any routes.
- ✓ B.The route-map filters OSPF routes based on the prefix-list and sets the metric for matching routes.
- C.The route-map is applied to inbound EIGRP updates, not to redistribution.
- D.The route-map will deny all routes because there is no 'permit' statement for the prefix-list.
Why B: The route-map is used to filter which OSPF routes are redistributed into EIGRP (via the prefix-list) and to set the metric for those routes. Only routes matching the prefix-list will be redistributed.
Variation 4. When redistributing OSPF into EIGRP, which EIGRP metric components are used to calculate the default metric?
hard- A.Bandwidth and delay only
- B.Bandwidth, delay, reliability, load, and MTU
- ✓ C.No default metric is assigned; redistribution fails unless a metric is configured.
- D.The OSPF cost is converted to an EIGRP metric using a default formula.
Why C: EIGRP requires all five K-values (bandwidth, delay, reliability, load, MTU) for metric calculation, but by default, only bandwidth and delay are used; the default metric for redistribution is not automatically derived and must be explicitly set.
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Last reviewed: Jun 18, 2026
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