* Step 1: Identify the requirement.
* You need an OSPF area that only contains intra-area route information in the form of Type 1 and Type 2 LSAs.
* Step 2: Analyze the possible OSPF area types.
* Option A: Totally non-to-stubby area.
* Option B: Totally stubby area.
* Option C: Stub area.
* Option D: Non-to-stubby area.
* Step 3: Understand OSPF area types.
* Totally Stubby Area (Option B): Only allows Type 1 and Type 2 LSAs and blocks Type 3, 4, and 5 LSAs. It uses a default route to represent external routes.
* This fits the requirement of containing only intra-area routes.
References:
* Juniper OSPF configuration guide on area types.
* Commands for configuring a totally stubby area:
shell
Copy code
set protocols ospf area <area-id> stub no-summaries