JNCIS-ENT Tunnels Practice Question
When configuring OSPF over a GRE tunnel on Junos, which TWO configurations ensure stable neighbor adjacencies and correct route propagation? (Choose two)
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
✓
Ensure that the tunnel interface has a valid IP address matching the subnet of the remote tunnel end.
Setting the OSPF network type to point-to-point and ensuring correct subnet assignment/reachability are critical.
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 IP-IP encapsulation on the OSPF routing options.
Why it's wrong here
OSPF does not use IP-IP encapsulation settings directly.
- ✓
Ensure that the tunnel interface has a valid IP address matching the subnet of the remote tunnel end.
Why this is correct
OSPF requires matching subnet connectivity between peers to form adjacencies.
- ✗
Enable BGP graceful restart on the tunnel interface.
Why it's wrong here
Graceful restart is a BGP feature, not an OSPF GRE tunnel configuration requirement.
- ✗
Set the OSPF dead interval to 1 second globally.
Why it's wrong here
A 1-second dead interval is excessively aggressive and risks unstable neighbor adjacencies.
- ✓
Configure the OSPF network type as point-to-point on the tunnel interface.
Why this is correct
Setting point-to-point avoids unnecessary DR/BDR election overhead across the point-to-point tunnel link.
Visual reference
About these practice questions
Courseiva writes every JNCIS-ENT question from scratch — 519 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Juniper Networks exam blueprint
This JNCIS-ENT practice question is part of Courseiva's free Juniper Networks certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the JNCIS-ENT exam.