JNCIP-ENT EVPN Practice Question
An administrator wishes to configure VXLAN data plane encapsulation on an MX Series router with an EVPN instance. Which statement under the routing-instances hierarchy defines the local VTEP source 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
✓
vtep-source-interface lo0.0;
In Junos OS, the VXLAN source interface is defined using the 'vtep-source-interface' statement under the EVPN routing instance or switch-options hierarchy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
encapsulation-source-interface fxp0.0;
Why it's wrong here
fxp0 is out-of-band management and cannot be used as a VTEP data plane source.
- ✗
vxlan-source-ip lo0.0;
Why it's wrong here
This is not a valid Junos configuration syntax.
- ✗
tunnel-source loopback 0;
Why it's wrong here
This syntax resembles other vendor CLIs, not Junos OS.
- ✓
vtep-source-interface lo0.0;
Why this is correct
The vtep-source-interface command specifies the loopback interface used as the source IP for VXLAN packets.
About these practice questions
This JNCIP-ENT question is part of Courseiva's 336-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam 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 JNCIP-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 JNCIP-ENT exam.