ExtL3 Fabric

Nexus Dashboard
  • Introduction
  • Nexus One Fabric
  • System Access
  • Site1 Fabric (Greenfield)
  • Validate Site1 Fabric
  • External L3
  • Validate ExtL3
  • Site2 Fabric (Brownfield)
  • Validate Site2 Fabric
  • Inter-Site Network
  • Unified Management
  • Fabric Groups
  • Validate MultiClstr Fabric
  • Network as Code

External connectivity from data centers is a prime requirement. VXLAN EVPN based data center fabrics, like your Greenfield and Brownfield, are providing east-west connectivity by distributing IP-MAC reachability information. In your Greenfield fabric, the border leaf switch, Site1-BL1, is in place to provide external Layer 3 connectivity using VRF Lite or simply put, connecting out of the fabric. These steps show you how to create the External Fabric required by Nexus Dashboard to extend a VRF to an external fabric device.

Nexus Dashboard can create External Fabrics and manage the external devices if they are Nexus Devices or ASR9000 series or NCS5500 series routers. Nexus Dashboard will not only generate and push the configuration required for the leaf switch(es) acting in the Border Leaf role, but also these platforms maintaining configuration compliance.

Step 1 - Exit Site1 Fabric

  1. Navigate back to Nexus Dashboard and in the top right corner, click the to close your Site 1 fabric. Depending on the screen you are currently are, you may need to click one more time the .

Step 2 - Launch Create Fabric Wizard

At this point you should be back to the Fabrics main page. You should now see Site1 and present.

  1. Click Create Fabric


  2. Click Create new LAN Fabric
  3. Click Next


  4. Click External and inter-fabric connectivity
  5. Click Next

Step 3 - Configure Fabric Settings

In the Settings page:

  1. Name the fabric: ExtL3
  2. Under Location Type: Raleigh, US
  3. Set the BGP ASN to 65333
  4. Set the License tier for fabrics to Premier
  5. Then, click Next
  6. Click Submit

Step 4 - View Fabrics Details

Once the External Fabric has been built, the GUI will take you to the All Done!

  1. Click View Fabric Details

Step 5 - Edit Fabric Settings Type

  1. Click Actions
  2. Click Edit Fabric Settings
  3. Click Fabric Management
  4. Uncheck Fabric Monitor Mode
  5. Click Save

Continue to the next section to discover and import your external device into your ExtL3 fabric.