350-601 Network Practice Question
An engineer is configuring BGP EVPN for VXLAN in a spine-leaf fabric. The leaf switches must advertise host IP-to-MAC mappings to the control plane. Which BGP address family should be enabled on the leaf switches?
⚠ Common exam trap
Cisco often tests the distinction between 'address-family l2vpn evpn' and 'address-family vpnv4 unicast' to trap candidates who confuse EVPN with traditional MPLS L3VPN or who assume that any VPN-related address family works for VXLAN.
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
✓
address-family l2vpn evpn
In a VXLAN BGP EVPN fabric, leaf switches must advertise host IP-to-MAC mappings using the BGP EVPN address family. This is enabled with the command 'address-family l2vpn evpn' under the BGP configuration, which carries Type-2 routes (MAC/IP advertisement routes) that contain both the MAC address and the associated IP address of the host.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
address-family vpnv4 unicast
Why it's wrong here
VPNv4 is for MPLS Layer 3 VPNs.
- ✗
address-family ipv4 unicast
Why it's wrong here
This carries IPv4 routes, not EVPN MAC/IP info.
- ✗
address-family link-state
Why it's wrong here
Link-state is for OSPF, not EVPN.
- ✓
address-family l2vpn evpn
Why this is correct
The `address-family l2vpn evpn` enables BGP to carry Network Layer Reachability Information (NLRI) for MAC/IP advertisement routes, which directly satisfies the requirement for leaf switches to advertise host IP-to-MAC mappings in a VXLAN EVPN fabric. This address family uses Route Type 2 (MAC/IP Advertisement) to encode both the MAC address and the associated host IP, allowing the control plane to distribute these bindings without flooding data-plane traffic.
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
Related to this question
About these practice questions
This 350-601 question is part of Courseiva's 984-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. 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.