EVPN-VXLAN
EVPN-VXLAN combines EVPN for Ethernet VPN control-plane signaling with VXLAN encapsulation for overlay forwarding across an IP underlay.
Key facts
- RFC 7432 (EVPN) and RFC 7348 (VXLAN) are primary public references
- Needs a stable ECMP underlay
- Not required for every small campus
Use cases
- Multi-tenant data centers
- Large campus segmentation
- Workload mobility within controlled domains
Design rules
- Prove underlay before overlays
- Account for VXLAN MTU overhead
- Keep border policy explicit
Limitations
Operational complexity rises; unsuitable where hardware lacks EVPN feature parity.
Best practices
Standardize loopback/VTEP addressing and document VNI/VRF maps.
References
Related docs
Document revision: 2026.07