350-601 Network Practice Question
In a VXLAN overlay network, what is the primary purpose of ingress replication for BUM traffic?
⚠ Common exam trap
Cisco often tests the distinction between ingress replication and multicast-based replication, and the trap here is that candidates may confuse ingress replication with ARP suppression or assume it provides multipathing, when in fact it is solely a method to forward BUM traffic without multicast in the underlay.
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
✓
To forward broadcast, unknown unicast, and multicast traffic without requiring multicast in the underlay
Ingress replication is a technique used in VXLAN overlay networks to handle BUM (Broadcast, Unknown unicast, Multicast) traffic without requiring a multicast-enabled underlay. The ingress VTEP (VXLAN Tunnel End Point) replicates the BUM packet and sends a separate unicast copy to each remote VTEP in the same VXLAN Network Identifier (VNI) segment, ensuring all relevant endpoints receive the traffic while relying solely on unicast routing in the underlay.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To reduce the need for ARP suppression
Why it's wrong here
ARP suppression reduces broadcast ARP, but ingress replication handles BUM traffic.
- ✓
To forward broadcast, unknown unicast, and multicast traffic without requiring multicast in the underlay
Why this is correct
Ingress replication sends BUM traffic as unicast to each remote VTEP.
- ✗
To enable multipathing of BUM traffic across multiple paths
Why it's wrong here
Ingress replication does not inherently provide multipathing; ECMP may be used.
- ✗
To assign VXLAN Network Identifiers (VNIs) to tenant traffic
Why it's wrong here
VNI assignment is a different process.
Go deeper
Related to this question
About these practice questions
One of 984 original 350-601 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-601 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 350-601 exam.