JNCIS-ENT High Availability Practice Question
An administrator configures a Link Aggregation Group (LAG) using LACP between two EX series switches. The link fails to aggregate, and the log shows 'LACP status: Expired'. What does the 'Expired' state indicate?
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 local port has stopped receiving LACP packets from the remote peer within the timeout window.
The 'Expired' state in LACP means the local port has stopped receiving LACP packets from the remote peer within the expected timeout period.
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 Virtual Chassis primary routing engine license has expired.
Why it's wrong here
VC licenses do not exist in this context.
- ✗
The Junos software license for aggregated Ethernet has expired.
Why it's wrong here
Aggregated Ethernet and LACP do not require separate feature licenses on EX series switches.
- ✗
The GRES synchronization timer has timed out.
Why it's wrong here
GRES timers are unrelated to LACP states.
- ✓
The local port has stopped receiving LACP packets from the remote peer within the timeout window.
Why this is correct
Expired state indicates communication failure with the peer switch regarding LACP heartbeats.
About these practice questions
Courseiva writes every JNCIS-ENT question from scratch — 506 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.