Cisco
300-320 · Question #618
300-320 Question #618: Real Exam Question with Answer & Explanation
The correct answer is C: stub routing. EIGRP stub routing prevents spoke routers from being queried for routes they do not own and stops them from acting as transit paths, improving network stability and reducing CPU and bandwidth overhead.
Question
An engineer is working on a design solution for a large hub-and-spoke EIGRP network. Which feature helps to make this design more stable while also reducing resource utilization?
Options
- AQos
- Bnetwork summarization
- Cstub routing
- Droute filtering
Explanation
EIGRP stub routing prevents spoke routers from being queried for routes they do not own and stops them from acting as transit paths, improving network stability and reducing CPU and bandwidth overhead.
Common mistakes.
- A. QoS manages traffic bandwidth and prioritization but does not influence EIGRP topology stability, query propagation, or routing table resource consumption.
- B. Network summarization reduces routing table size and limits query scope somewhat, but it does not stop hub routers from querying spokes or prevent spokes from being used as transit paths.
- D. Route filtering controls which prefixes are exchanged but does not suppress EIGRP queries or prevent spoke routers from participating in the DUAL process as transit nodes.
Concept tested. EIGRP stub routing in hub-and-spoke design
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