350-601 Network Practice Question
In a VXLAN EVPN fabric, which protocol is used to exchange MAC and IP address reachability information among VTEPs?
⚠ Common exam trap
Cisco often tests the distinction between underlay routing protocols (OSPF, IS-IS, EIGRP) and the overlay control plane (MP-BGP EVPN), leading candidates to mistakenly select an IGP that handles only underlay IP reachability rather than the protocol that actually exchanges MAC/IP information in the overlay.
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
✓
BGP
In a VXLAN EVPN fabric, BGP (Border Gateway Protocol) is used as the control plane protocol to exchange MAC and IP address reachability information among VTEPs. Specifically, MP-BGP (Multiprotocol BGP) with EVPN address family (AFI L2VPN / SAFI EVPN) carries Type-2 routes (MAC/IP advertisement) to distribute host reachability across the overlay network, enabling efficient MAC learning and ARP suppression.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
BGP
Why this is correct
BGP EVPN is the standard control plane for VXLAN.
- ✗
IS-IS
Why it's wrong here
IS-IS is also an underlay protocol, not used for EVPN.
- ✗
EIGRP
Why it's wrong here
EIGRP is a Cisco proprietary underlay protocol, not for EVPN.
- ✗
OSPF
Why it's wrong here
OSPF is a link-state routing protocol for underlay, not for MAC/IP routes.
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
Go deeper
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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.