350-601 Network Practice Question
Which THREE are valid methods for handling BUM traffic in VXLAN? (Choose three.)
⚠ Common exam trap
Cisco often tests the distinction between 'ingress replication' and 'multicast-based replication' as the two primary BUM handling methods, while 'ARP suppression' is a separate optimization feature that reduces BUM traffic but is not a replication method itself.
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
✓
Ingress replication
Ingress replication is a valid method for handling BUM traffic in VXLAN where the ingress VTEP replicates broadcast, unknown unicast, and multicast frames to all remote VTEPs in the VXLAN segment. This approach does not require a multicast routing infrastructure in the underlay, making it simpler to deploy in networks that lack multicast support. It is defined in RFC 7348 and is commonly used in VXLAN EVPN fabrics.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Ingress replication
Why this is correct
Replicates from ingress VTEP.
- ✗
Egress replication
Why it's wrong here
Not a standard VXLAN method.
- ✓
ARP suppression
Why this is correct
Reduces ARP broadcasts by learning MAC-to-IP bindings.
- ✓
Multicast-based replication
Why this is correct
Uses underlay multicast groups.
- ✗
Flood and learn
Why it's wrong here
Not a specific method; VXLAN uses the above.
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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.