In a data center fabric using BGP with EVPN, what is the primary role?

• A. Carrying reachability information between racks as part of the control plane.
• B. Provides data plane encryption.
• C. Acts as a pure L3 routing protocol with no EVPN function.
• D. Manages IP address assignment via DHCP.

Answer: (A)

In a BGP EVPN fabric, the main job of the control plane is to distribute reachability information for endpoints across the fabric. EVPN uses BGP to advertise MAC addresses, IP bindings, and their associated VXLAN/VNI contexts so every leaf or PE learns how to reach devices that are attached to other racks. This lets the data plane forward traffic efficiently—frames are encapsulated and sent to the correct remote VTEP without each leaf having to learn everything locally or flood broadcasts.

Encryption of the data plane isn’t provided by EVPN itself (that would require separate encryption mechanisms). It isn’t just a pure L3 routing protocol without EVPN functionality, because EVPN specifically extends BGP to carry Ethernet VPN reachability. DHCP address assignment isn’t part of what EVPN/BGP provides either.