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300-410 Practice Question: When redistributing routes from EIGRP into OSPF,…
When redistributing routes from EIGRP into OSPF, what is the default OSPF metric assigned to redistributed routes if no metric is specified?
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
✓
20
Cisco IOS assigns a default metric of 20 to redistributed routes from other protocols into OSPF if no metric is explicitly configured. This is defined in Cisco's implementation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
20
Why this is correct
The default metric for redistributed routes into OSPF is 20.
- ✗
1
Why it's wrong here
1 is not the default; it is the default for connected routes under certain conditions.
- ✗
10
Why it's wrong here
10 is the default cost for a FastEthernet interface in OSPF, not for redistribution.
- ✗
0
Why it's wrong here
0 is not a valid default metric; redistribution without a metric may fail.
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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Variation 1. When redistributing routes into OSPF, which OSPF metric value is assigned by default if none is specified?
easy- A.1
- B.10
- ✓ C.20
- D.100
Why C: Cisco IOS assigns a default metric of 20 to redistributed routes into OSPF, except for BGP routes which default to 1.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.