The answer is configuring the same anycast gateway MAC and IP address on all VTEPs in the VLAN, and enabling the address-family l2vpn evpn under BGP. The anycast gateway model requires a shared MAC and IP across all VTEPs so that endpoints see a consistent default gateway regardless of which leaf they connect to, ensuring seamless mobility and traffic symmetry. Enabling BGP EVPN as the control plane is equally essential because it allows VTEPs to exchange Type-2 (MAC/IP) and Type-3 (IMET) routes, which are the foundation for distributed forwarding and ARP suppression in the centralized anycast design. On the Cisco DCCOR 350-601 exam, this topic tests your understanding of how VXLAN EVPN separates the control plane from the data plane; a common trap is forgetting that BGP EVPN must be explicitly activated under the address-family l2vpn evpn, not just under the BGP process globally. Remember the mnemonic “Same MAC, BGP EVPN stack” — the first ensures gateway consistency, the second ensures route exchange.
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.
Which TWO configuration steps are necessary to enable VXLAN EVPN on a Cisco Nexus 9000 switch using the centralized anycast gateway model?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable the address-family l2vpn evpn under the BGP configuration.
Option A is correct because in VXLAN EVPN, BGP is used as the control plane to exchange MAC and IP reachability information. Enabling the address-family l2vpn evpn under BGP configuration is mandatory to advertise EVPN routes (type-2 and type-3) between VTEPs, which is the foundation of the centralized anycast gateway model.
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.
✓
Enable the address-family l2vpn evpn under the BGP configuration.
Read the scenario before looking for a memorised answer.
✗
Enable IGMP snooping on all VLANs extended over VXLAN.
Why it's wrong here
IGMP snooping is not required for VXLAN EVPN; BUM traffic is handled differently.
✓
Configure the same anycast gateway MAC and IP address on all VTEPs in the VLAN.
Why this is correct
Centralized anycast gateway requires identical MAC and IP on all VTEPs.
Related concept
Read the scenario before looking for a memorised answer.
✗
Set the VXLAN destination UDP port to 8472.
Why it's wrong here
Standard VXLAN uses UDP port 4789; 8472 is for other encapsulations.
✗
Create an NVE interface with a loopback interface as the source.
Why it's wrong here
The NVE source should be a loopback, but it's not a step unique to centralized anycast.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between mandatory EVPN control plane steps (BGP address-family l2vpn evpn) and generic VXLAN data plane steps (NVE interface, UDP port), leading candidates to select options like creating the NVE interface or setting the UDP port as 'necessary' for EVPN, when they are actually prerequisites for VXLAN itself but not the two specific steps asked for enabling VXLAN EVPN with centralized anycast gateway.
Detailed technical explanation
How to think about this question
The centralized anycast gateway model relies on all VTEPs sharing the same anycast gateway MAC and IP address per VLAN, allowing seamless host mobility without requiring per-VLAN gateway redundancy protocols like HSRP. Under the hood, BGP EVPN type-2 routes carry MAC/IP advertisements, and type-3 routes handle BUM traffic, while the anycast gateway MAC is configured on the SVI (interface vlan) using the 'fabric forwarding anycast-gateway-mac' command. In real-world scenarios, misconfiguring the anycast MAC or failing to enable address-family l2vpn evpn can cause traffic black-holing or ARP resolution failures across VTEPs.
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 help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: Enable the address-family l2vpn evpn under the BGP configuration. — Option A is correct because in VXLAN EVPN, BGP is used as the control plane to exchange MAC and IP reachability information. Enabling the address-family l2vpn evpn under BGP configuration is mandatory to advertise EVPN routes (type-2 and type-3) between VTEPs, which is the foundation of the centralized anycast gateway model.
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.
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Question Discussion
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