300-410 Layer 3 Technologies Practice Question
A network engineer is configuring EIGRP on a Cisco IOS XE router. The router is connected to two different autonomous systems: AS 100 and AS 200. The engineer wants to redistribute routes from AS 100 into AS 200. Which two statements are true regarding EIGRP redistribution? (Choose two.)
⚠ Common exam trap
Test-takers frequently confuse the direction of redistribution; the command must be placed under the target EIGRP process, not the source, and a seed metric is mandatory.
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
✓
A seed metric must be specified using the `default-metric` command or in the redistribute statement.
To redistribute routes from EIGRP AS 100 into EIGRP AS 200, you must configure the `redistribute eigrp 100` command under the EIGRP AS 200 process. Additionally, a seed metric must be provided, either within the redistribute command or via the `default-metric` command, because EIGRP requires specific metric parameters. Without these, redistribution will not occur.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A seed metric must be specified using the `default-metric` command or in the redistribute statement.
Why this is correct
When redistributing routes into EIGRP, a seed metric is required because EIGRP uses a composite metric (bandwidth, delay, load, reliability, MTU). If no seed metric is provided, the routes will not be redistributed. You can specify the metric in the `redistribute` command using the `metric` keyword or set a default metric with the `default-metric` command under the EIGRP process.
- ✓
The `redistribute eigrp 100` command must be configured under router eigrp 200.
Why this is correct
To redistribute routes from EIGRP AS 100 into EIGRP AS 200, you must enter the EIGRP AS 200 routing process and issue the `redistribute eigrp 100` command. This command imports routes from AS 100 into the AS 200 topology table. Without this, routes from AS 100 will not be advertised into AS 200.
- ✗
The `redistribute eigrp 100` command must be configured under router eigrp 100.
Why it's wrong here
Configuring `redistribute eigrp 100` under router eigrp 100 would attempt to redistribute EIGRP AS 100 into itself, which is not allowed and has no effect. Redistribution always occurs from a source routing protocol into the target routing protocol's process. Therefore, the command must be placed under the target process, which is AS 200.
- ✗
Redistribution between different EIGRP autonomous systems requires the `redistribute connected` command.
Why it's wrong here
The `redistribute connected` command is used to redistribute directly connected networks into EIGRP, not to redistribute between different EIGRP autonomous systems. To redistribute between EIGRP AS 100 and AS 200, you use the `redistribute eigrp 100` command under the target process. The `redistribute connected` command is unrelated to this scenario.
- ✗
The `default-metric` command is optional and only needed for OSPF redistribution.
Why it's wrong here
The `default-metric` command is not optional for EIGRP redistribution; it is required if the metric is not specified in the redistribute statement. OSPF also requires a seed metric for redistribution, but the statement is incorrect because it implies that EIGRP does not need it. In EIGRP, without a seed metric, redistribution fails.
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.