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352-001 · Question #526
352-001 Question #526: Real Exam Question with Answer & Explanation
The correct answer is B: At EIGRP interface boundaries. Route summarization in EIGRP is applied at the interface level using the ip summary-address command, while in OSPF it is applied at area boundaries on ABRs and ASBRs.
Question
At which two networks points is route summarization supported? (Choose two)
Options
- AAt EIGRP AS boundaries
- BAt EIGRP interface boundaries
- CAt OSPF virtual-link boundaries
- DAt EIGRP are boundaries
- EAt OSPF area boundaries
- FAt EIGRP stub interface boundaries
Explanation
Route summarization in EIGRP is applied at the interface level using the ip summary-address command, while in OSPF it is applied at area boundaries on ABRs and ASBRs.
Common mistakes.
- A. EIGRP does not use the concept of AS boundaries for summarization in the same way BGP does - summarization is configured per-interface, not at AS boundary points.
- C. OSPF virtual links are used to extend the backbone area through a non-backbone area and do not support or act as summarization boundaries.
- D. EIGRP does not have areas like OSPF, so 'EIGRP area boundaries' is not a valid concept in EIGRP routing.
- F. EIGRP stub routing reduces query propagation but is not a route summarization boundary - stub routers advertise only their directly connected and summary routes.
Concept tested. EIGRP interface and OSPF area boundary summarization
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