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300-410 Practice Question: An engineer configures EIGRP stub with `eigrp…
An engineer configures EIGRP stub with `eigrp stub connected static` on a remote router. The remote router has a directly connected network and a static route redistributed into EIGRP. Unexpectedly, the hub router does not receive the static route, although the connected route is learned. Which is the most likely explanation?
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
✓
The stub router must also have `redistribute static` configured under the EIGRP process for the static route to be advertised.
The `eigrp stub connected static` command only advertises connected and static routes that are directly configured on the stub router, but it does not automatically redistribute the static route into EIGRP unless redistribution is explicitly configured. The stub command only controls which routes are advertised, not the redistribution process. Without `redistribute static` under the EIGRP process, the static route is not injected into EIGRP.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The stub router must also have `redistribute static` configured under the EIGRP process for the static route to be advertised.
Why this is correct
The `eigrp stub static` keyword only permits advertisement of static routes that are already in the EIGRP topology; redistribution is required first.
- ✗
The hub router has a route filter that blocks the static route due to administrative distance mismatch.
Why it's wrong here
Administrative distance does not affect advertisement; redistribution is the issue.
- ✗
The stub router is configured with `eigrp stub connected static` but the static route is not directly connected, so it is ignored.
Why it's wrong here
Static routes are not required to be directly connected; the keyword 'static' refers to static routes in the routing table.
- ✗
The stub router must use `eigrp stub receive-only` to advertise static routes.
Why it's wrong here
`receive-only` prevents all outbound advertisements, which is opposite of what is needed.
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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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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