The answer is to ensure the static route is present in the routing table, configure redistribution on the ABR, and inject the route into area 0. This works because OSPF Type 3 LSAs are generated only by an ABR to describe inter-area routes; when a static route is redistributed into OSPF on an ABR, it first becomes a Type 5 or Type 7 external LSA unless it is injected directly into area 0, where the ABR then converts it into a Type 3 LSA for propagation to other areas. On the Fortinet NSE 7 Advanced Security NSE7 exam, this question tests your understanding of OSPF LSA types and the ABR’s role in route advertisement—a common trap is assuming redistribution anywhere in the network yields a Type 3, but only the ABR performing the redistribution into the backbone area triggers the conversion. Remember the memory tip: “ABR to area 0 for Type 3 flow.”
NSE7 Advanced Networking and SD-WAN Practice Question
This NSE7 practice question tests your understanding of advanced networking and sd-wan. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A FortiGate is acting as an ABR between OSPF area 0 and area 1. The administrator needs to redistribute a static route into OSPF so that it appears as an inter-area route (Type 3 LSA). Which three steps are required? (Choose THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Verify the OSPF process has network statements covering all interfaces
Redistribution is configured under OSPF process. The static route must exist. To propagate as Type 3, the redistribution must occur on the ABR and the route should be injected into area 0 so it can be converted to Type 3. Optionally, a route map can filter.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Disable route summarization on the ABR
Why it's wrong here
Summarization is optional, not required.
✗
Configure a route map to set the metric type to Type 1
Why it's wrong here
Type 1 is not required; Type 3 is default for inter-area.
✓
Verify the OSPF process has network statements covering all interfaces
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Detailed technical explanation
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
OSPF neighbours must agree on key parameters.
Router ID selection can affect neighbour relationships and LSDB output.
OSPF cost influences the preferred path.
A route can appear in OSPF information but not become the installed route.
TExam Day Tips
→Check area mismatch first when OSPF adjacency fails.
→Review passive interfaces when a network is advertised but no neighbour forms.
→Use show ip ospf neighbor and show ip route clues carefully.
Key takeaway
OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
What to study next
Got this wrong? Here's your next step.
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related NSE7 OSPF questions on adjacency and route selection.
Advanced Networking and SD-WAN — This question tests Advanced Networking and SD-WAN — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: Verify the OSPF process has network statements covering all interfaces — Redistribution is configured under OSPF process. The static route must exist. To propagate as Type 3, the redistribution must occur on the ABR and the route should be injected into area 0 so it can be converted to Type 3. Optionally, a route map can filter.
What should I do if I get this NSE7 question wrong?
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related NSE7 OSPF questions on adjacency and route selection.
What is the key concept behind this question?
OSPF neighbours must agree on key parameters.
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