350-601 Network Practice Question
In a VXLAN EVPN fabric, a new server is connected to a leaf switch and requires Layer 2 connectivity to an existing VM on a different leaf. The engineer notes that the VTEP on the new leaf does not have a Type-2 route for the VM's MAC address. Which EVPN route type is used to advertise MAC addresses?
⚠ Common exam trap
Cisco often tests the distinction between Type-2 (MAC/IP) and Type-3 (IMET) routes, and the trap here is that candidates confuse the route used for BUM flooding (Type-3) with the route used for unicast MAC advertisement (Type-2), leading them to incorrectly select Type-3.
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
✓
Type-2 (MAC/IP Advertisement)
In VXLAN EVPN fabrics, Type-2 (MAC/IP Advertisement) routes are specifically used to advertise MAC addresses and their associated IP addresses between VTEPs. When a new leaf switch needs Layer 2 connectivity to a VM on a different leaf, it must learn the VM's MAC address via a Type-2 route from the remote VTEP. Without this route, the new leaf cannot populate its MAC table for that VM, preventing Layer 2 communication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Type-5 (IP Prefix)
Why it's wrong here
Type-5 advertises IP prefixes.
- ✗
Type-1 (Ethernet Auto-discovery)
Why it's wrong here
Type-1 is for multi-homing.
- ✓
Type-2 (MAC/IP Advertisement)
Why this is correct
Type-2 advertises MAC and optionally IP addresses.
- ✗
Type-3 (Inclusive Multicast Ethernet Tag)
Why it's wrong here
Type-3 is for BUM 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
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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