An overlay or tenant in VXLAN EVPN needs a Layer-3 (L3) VNI for symmetric IRB if inter-VXLAN routing is needed. A L3VNI is associated with a tenant VRF routing instance that separates the routing domain between tenant overlays. This is one of the powerful things about NDFC. It automates and provides a health check that all the VRF, BGP EVPN, and VXLAN configuration is correct. This can be quite a lot of configuration to handle in large production environments with many peers and/or many tenant overlays. In this section, you will create and stage the first tenant overlay VRF and associated L3VNI. In the next section, you will go through the workflow of how to create Networks that include Layer-2 (L2) VNIs and VLANs and associate them to an overlay tenant VRF.

Step 1 - Launch Create VRF Wizard

From the Interfaces view, navigate to VRFs.

1. Click VRFs in the top navigation bar
2. Click Actions
3. Click Create

Step 2 - Populate Create VRF Wizard

In the Create VRF wizard, populate the configuration parameters. You most likely can see how these fields align to the common command line configuration for a VRF on NX-OS.

1. Set the VRF Name to BlueVRF
2. Leave the default VNI ID as 50000 (this was pulled from the pool of VNIs when you created the fabric)
3. Click Propose VLAN for NDFC to pull a VLAN from the VLAN pool that was created when you created the fabric
4. Leave the VRF templates default
5. Set the VRF Vlan Name to BlueVRF
6. Set the VRF Intf Description to BlueVRF
7. Set the VRF Description to BlueVRF
8. Click Create

Step 3 - Confirm VRF is Created

Confirm the VRF is created. The current status should display as NA as the VRF is not attached and deployed to a leaf switch yet. Also confirm that the VRF ID is 50000. Again, the VRF ID is also considered the L3VNI or VNI ID.

Step 4 - View Current VRF Attachments

1. Double Click on the VRF BlueVRF
2. click VRF Attachments and notice the VRF you created shows up as applicable to be attached and deployed to any of your leaf switches. You will check back here after the next couple sections where the VRF is automatically deployed to only the leaf switches where it is required based on the Networks deployed.

Continue to the next section to create Networks in your Site1 Greenfield fabric.