350-501 Architecture Practice Question
In EVPN, what is the function of the Ethernet Segment Identifier (ESI)?
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
✓
It identifies a multi-homed device or network segment.
The ESI identifies a multi-homed device or network, enabling all-active redundancy and fast convergence.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It is used for load balancing among PEs.
Why it's wrong here
ESI enables load balancing but its primary function is identification.
- ✓
It identifies a multi-homed device or network segment.
Why this is correct
ESI is used for multi-homing.
- ✗
It uniquely identifies a customer MAC address.
Why it's wrong here
MAC addresses are identified separately.
- ✗
It identifies a VXLAN tunnel.
Why it's wrong here
VXLAN uses VNI.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-501 practice question is part of Courseiva's free Cisco 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 350-501 exam.