JNCIP-ENT BGP Advanced Practice Question
A Junos router receives a BGP route containing multiple extended and large communities. The administrator writes a routing policy to filter routes based on large communities. Which format is used to define a large community in Junos policy-options?
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
✓
large-community:global_administrator:local_data1:local_data2
Large communities in Junos policy-options are defined using the format large-community:global_administrator:local_data1:local_data2.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
as-number:identifier
Why it's wrong here
This is the format for standard BGP communities.
- ✓
large-community:global_administrator:local_data1:local_data2
Why this is correct
Junos uses the three-part format for defining large communities.
- ✗
target:as-number:identifier
Why it's wrong here
This is a typical format for BGP VPN route targets (extended communities).
- ✗
ipv4-address:identifier
Why it's wrong here
This format is used for certain types of extended communities (route origin or target).
About these practice questions
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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 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.