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Question 756 of 1,958
mediumDrag & DropObjective-mapped
CCNP Practice Question: Drag and drop the steps of OSPF summarization at…
Drag and drop the steps of OSPF summarization at ABR configuration steps into the correct order, from first to last.
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
✓
Identify subnets to summarize
First, identify the subnets to summarize into a single prefix. Then, configure the area range command on the ABR under the OSPF process, specifying the area and the summary prefix. Optionally, set the 'not-advertise' keyword to suppress the summary. Verify the summary route in the OSPF database using 'show ip ospf summary-address'. Finally, check that the summary route appears in the routing table of other routers.
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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Same concept, more angles
1 more way this is tested on 350-401
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Drag and drop the steps of OSPF summarization at ABR configuration steps into the correct order, from first to last.
medium- ✓ A.Identify contiguous subnets to summarize
- ✓ B.Enter OSPF router configuration mode
- ✓ C.Use area range command with summary prefix
- ✓ D.Verify summary route in OSPF database
- ✓ E.Check routing table for summary entry
Why A: Summarization on an ABR uses the area range command to aggregate prefixes. The order is: identify prefixes, configure range, verify, and optionally suppress more specific routes.
Last reviewed: Jun 18, 2026
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