Enabling Layer 3 External Connectivity with VRF-Lite The following figure shows a sample topology that illustrates Layer 3 external connectivity with VRF-Lite: Figure 3: Layer 3 External Connectivity with VRF-Lite To configure Layer 3 external connectivity with VRF-Lite, perform the following set of procedures: • Configure the VRF on the border VTEP interface that faces the external router. • Ensure that Layer 2 VPN EVPN is advertised as part of the BGP VRF configuration. See Configuring BGP with EVPN and VRF Address Families on a VTEP for detailed steps.
Note Redistribution of the respective interior gateway protocol (IGP) is required in the BGP VRF address family to distribute the external prefixes into the BGP EVPN VXLAN fabric. For more information about VRF-Lite, see Contents IP Routing Configuration Guide Configuring VRF-lite in the software configuration guide for the applicable release. Configuring the VRF on the Border VTEP Interface that Faces the External Router To cnofigure the VRF on the border VTEP interface that faces the external router, perform these steps: Procedure Configuring EVPN VXLAN External Connectivity Enabling Layer 3 External Connectivity with VRF-Lite Command or Action Purpose Step 1 enable Example:
Device> enable Enables privileged EXEC mode. Enter your password, if prompted. Configuring EVPN VXLAN External Connectivity 7