Updating a region to use iBGP

If you plan to use only nodes within a fabric created with the Fabric Services System as route reflectors, you must create that fabric and configure those nodes before you can configure a region to use iBGP for EVPN peering.

When you have created at least one fabric within the region and configured nodes within that fabric as route reflectors, you can return to the Deployment Regions page to update the region settings to use iBGP.

This section assumes you are familiar with the process of creating and deploying fabrics in the Fabric Services System.

It also assumes you have the expertise to configure nodes as route reflectors, independently of the Fabric Services System.

Updating region settings to use iBGP

Before you begin this procedure, you must have created and deployed at least one fabric within the region, and then configured nodes within the region as route reflectors.

When there are route reflectors in a fabric, you can update the region settings to use those route reflectors for iBGP EVPN peering.

To update the region settings to use iBGP:

  1. Click to open the main menu.
  2. In the main menu, select Deployment Regions. The Deployment Regions page opens, showing a graphical representation of regions already created.
  3. Right-click the Deployment Regions map and select Edit Details... from the displayed list.
  4. From the EVPN Profile section, in Control Plane drop-down list, select iBGP.
  5. Enter a valid Local Autonomous System (AS) value.
  6. Enter a Cluster ID to represent the SR OS cluster to which leaf nodes are peered. The system currently supports a single SR OS cluster for iBGP.
  7. Add a previously configured route reflector to the Route Reflector IP List field by doing the following:
    1. Click +ADD.
    2. Enter a route reflector IP address in the resulting form.
    3. Click ADD.
  8. If required for redundancy, repeat step 7 to add additional route reflector IP addresses.
    All route reflectors must point to the same SR OS cluster. Leaf nodes use any of the reflectors in this list interchangeably to communicate with the SR OS cluster.
  9. Click the SAVE button. The system saves the new region settings.
Proceed to Updating existing fabric intents to use new iBGP settings.

Configuring fabric nodes as route reflectors

Before you begin this procedure, you must:

  • have created a deployment region with EVPN peering set to "None", as described in Creating a region
  • be familiar with the fabric intent creation and deployment process described in Fabric intents
  • know how to configure nodes as route reflectors, independently of the Fabric Services System
You can use the Fabric Services System to design and deploy fabrics within a region. You can then configure nodes within those fabrics to function as route reflectors. When there are route reflectors in the fabric, you can update the region settings to use those route reflectors for iBGP EVPN peering.

To configure nodes within a fabric as route reflectors:

  1. Configure and deploy one or more flexible leaf/spine fabric intents using the Fabric Services System.
  2. Note the IP address of each node you plan to configure as a route reflector.
  3. Manually configure each of these nodes as a route reflector, independently of the Fabric Services System.
  4. Accept these deviations.

Proceed to Updating region settings to use iBGP.

Updating existing fabric intents to use new iBGP settings

When you have modified the region to use iBGP, you must update all fabrics within the region so that they inherit these new settings.

To update your fabrics with the new iBGP settings, do the following for each fabric in the region:

  1. Open the fabric intent's Design page.
  2. Create a new version of the intent by selecting Create a New Version from the More actions menu.
  3. Save the fabric intent.
  4. Click GENERATE FABRIC.
  5. Deploy the new version of the fabric.