JNCIS-ENT High Availability Practice Question
An administrator is setting up VRRP tracking on an EX4300 switch interface. If the uplink interface monitoring the core network fails, what should happen to the VRRP priority on the gateway interface?
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
✓
The VRRP priority is decremented by a configured value so that the backup router can assume the master role.
VRRP interface tracking automatically decrements the local router's priority when a monitored tracking interface goes down, allowing a backup router with higher priority to take over as master.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The VRRP priority is increased to maximum to force immediate forwarding.
Why it's wrong here
Increasing priority on failure would keep it as master, which is undesirable if the upstream link is dead.
- ✗
The interface shuts down all LACP bundles connected to the switch.
Why it's wrong here
Tracking drops the VRRP priority, it does not globally shut down LACP bundles.
- ✗
The switch initiates an immediate In-Service Software Upgrade.
Why it's wrong here
Tracking is a VRRP high availability mechanism, not a trigger for ISSU.
- ✓
The VRRP priority is decremented by a configured value so that the backup router can assume the master role.
Why this is correct
Priority decrementing ensures that a router experiencing an upstream uplink failure relinquishes its VRRP mastership.
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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.