WAN Aggregation Layer

Within an EVPN-VXLAN fabric, the Border Persona provides connectivity between the overlay fabric and networks or services located outside the fabric.

The diagram identifies WAN aggregation as the layer connecting the enterprise campus network to external WAN and Internet resources.

This makes the WAN aggregation layer the most appropriate location for the Border Persona.

HPE Aruba Networking Central NetConductor uses distinct fabric personas to define the responsibilities of participating network devices.

The Edge Persona is generally deployed on access switches, where endpoints connect and distributed policy enforcement occurs. The Route Reflector Persona distributes EVPN reachability information among participating VTEPs and is commonly positioned at the campus core.

The Stub Persona extends connectivity and policy information toward services or devices that use static VXLAN tunnels, including certain wireless gateway designs.

The Border Persona provides connectivity between the EVPN fabric and external routed networks. It therefore requires appropriate route exchange, forwarding, segmentation, and redundancy capabilities.

In the supplied architecture, WAN aggregation directly represents this external-connectivity boundary.

HPE's NetConductor architecture documentation explicitly identifies WAN aggregation as a supported Border Persona placement.

For smaller campus deployments, Border and Route Reflector functions can also be combined on supported core switches.

Official HPE Reference: HPE Aruba Networking NetConductor Architecture Guide — Fabric Personas, Platform Support, External Connectivity and Single-Fabric Design.

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