- A
address-family vpnv4 unicast
Why wrong: VPNv4 is for MPLS Layer 3 VPNs.
- B
address-family ipv4 unicast
Why wrong: This carries IPv4 routes, not EVPN MAC/IP info.
- C
address-family link-state
Why wrong: Link-state is for OSPF, not EVPN.
- D
address-family l2vpn evpn
This is the correct address family for EVPN routes.
Question 201 of 1,000
350-601 Network Practice Question
This 350-601 practice question tests your understanding of network. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
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?
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.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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
This is the correct address family for EVPN routes.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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.
Detailed technical explanation
How to think about this question
Under the hood, the BGP EVPN address family uses MP-BGP with AFI 25 (L2VPN) and SAFI 70 (EVPN) as defined in RFC 7432. Type-2 routes carry a route distinguisher (RD), MAC address, IP address, and VNI information, enabling the control plane to populate the forwarding table on remote VTEPs. In a real-world scenario, if a leaf switch fails to enable the l2vpn evpn address family, remote VTEPs will never learn the host MAC/IP bindings, causing traffic black-holing for that leaf's attached hosts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 350-601 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
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 |
What to study next
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FAQ
Questions learners often ask
What does this 350-601 question test?
Network — This question tests Network — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 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.
What should I do if I get this 350-601 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jul 4, 2026
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.
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