hardMultiple Choice
300-410 Practice Question: When redistributing OSPF into EIGRP, which EIGRP…
When redistributing OSPF into EIGRP, which EIGRP metric components are used to calculate the default metric?
⚠ Common exam trap
The trap is assuming that EIGRP will automatically derive a metric from OSPF cost. Candidates might think there is a default conversion, but there is none. The key is to remember that EIGRP requires explicit metric configuration for redistribution, unlike some other protocols that have default seed metrics.
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
✓
No default metric is assigned; redistribution fails unless a metric is configured.
When redistributing OSPF into EIGRP, no default metric is assigned; redistribution fails unless a metric is explicitly configured. EIGRP requires five metric components (bandwidth, delay, reliability, load, MTU) to calculate its composite metric, and there is no automatic conversion from OSPF cost. Therefore, the administrator must specify a seed metric using the 'default-metric' command or per-redistribution metric.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Bandwidth and delay only
Why it's wrong here
EIGRP's default seed metric when redistributing from OSPF is bandwidth 100000 Kbps, delay 10000 microseconds, reliability 255, load 1, and MTU 1500 — so bandwidth and delay alone omit the reliability, load and MTU values that EIGRP actually seeds. Bandwidth and delay are the components used when manually configuring the metric with the metric keyword.
- ✗
Bandwidth, delay, reliability, load, and MTU
Why it's wrong here
Only bandwidth and delay form the default seed metric; reliability, load and MTU are not set by default and must be configured manually. All five components apply when an engineer explicitly specifies the full metric during redistribution, not for the default.
- ✓
No default metric is assigned; redistribution fails unless a metric is configured.
Why this is correct
EIGRP has no default seed metric for redistributed routes. Unlike OSPF, which defaults to 20, redistribution into EIGRP fails unless a seed metric (bandwidth, delay, reliability, load, MTU) is explicitly supplied via the redistribute command.
- ✗
The OSPF cost is converted to an EIGRP metric using a default formula.
Why it's wrong here
EIGRP does not derive its seed metric from OSPF cost; the default is fixed values regardless of the source metric. Cost translation applies when redistributing into OSPF, where the seed is set by the redistributing router, not into EIGRP.
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.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
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.