When you deploy Workload Management, the route maps created on the NSX-T Edge Tier-0 router in eBGP mode contains an IP prefix with only a deny rule. This blocks routes from getting advertised to the ToR switches.

If you are using the Edge cluster only for Kubernetes - Workload Management, follow option 1 and disable tier-1 route advertisements. If you are using the Edge cluster for additional tasks, follow option 2 and create a new allow rule.

Option 1: Disable Advertisements of Tier-1 Connected Networks through Tier-0 Router

Networks connected to tier-1 router are not advertised from tier-0 gateway to outside networks.

  1. Navigate to the NSX-T UI for the workload domain where you are deploying Workload Management.
  2. In the Networking section, click Tier-0 Gateway.
  3. Click the horizontal ellipsis and then click Edit.
  4. Expand Route Re-Distribution and click the horizontal ellipsis to the right of Route Re-Distribution.
  5. Click the horizontal ellipsis to the left of default and click Edit.
  6. Click L2 in the Route Re-distribution column.
  7. In the Advertised Tier-1 Subnets section, click the Connected interfaces and Segments checkbox (so that it is not selected).
  8. Click Apply and then click Save.

Option 2: Create New Allow Rule and Apply it to Route Re-redistribution

When you deploy Workload Management, a new deny rule is appended to the route map. So you must add a new permit rule to the route map.

allow any IP prefix list and route map and apply it to the route redistribution rule as the last rule.

  1. Navigate to the NSX-T UI for the workload domain where you are deploying Workload Management.
  2. In the Networking section, click the horizontal ellipsis to edit Tier-0 Gateway.
  3. Create a new IP prefix list.
    1. Expand Routing.
    2. Click 1 next to IP Prefix Lists.
    3. In the Set IP Prefix List dialog box, click Add IP Prefix List.
    4. Type a name (for example, test) and click Set.
    5. Click Add Prefix.
    6. In Network, click Any and in Action, select Permit.
    7. Click Apply and then click Save.
  4. Create a route map for the IP prefix list created in step 3.
    1. Click Set next to Route Map.
    2. Click Add Route Map.
    3. Add new match criteria with IP prefix.
    4. Select the IP prefix created in step 3 and action Permit.
    5. Click Apply and then click Save.
  5. Apply edited route map to route re-distribution.
    1. On the Tier-0 Gateways page, expand Route Re-Distribution and click the horizontal ellipsis next to Router Re-distribution.
    2. Click the horizontal ellipsis to the left of default and click Edit.
    3. From the drop-down in the Route Map column, select the route map you created in step 4.
    4. Click Apply and then click Save.
    5. Click Close Editing.