When you create a downlink port on a tier-1 logical router, the port serves as a default gateway for the VMs that are in the same subnet.



  1. With admin privileges, log in to NSX Manager.
  2. Select Networking > Tier-1 Logical Routers.
  3. Click the name of a tier-1 router.
  4. Click the Configuration tab and select Router Ports.
  5. Click Add.
  6. Enter a name for the router port and optionally a description.
  7. In the Type field, select Downlink.
  8. For URPF Mode, select Strict or None.
    URPF (unicast Reverse Path Forwarding) is a security feature.
  9. (Optional) Select a logical switch.
  10. Select whether this attachment creates a switch port or updates an existing switch port.
    If the attachment is for an existing switch port, select the port from the drop-down menu.
  11. Enter an IP address and a prefix length for the router port.
  12. (Optional) Select a DHCP relay service.
  13. Click Add.

What to do next

Enable route advertisement to provide North-South connectivity between VMs and external physical networks or between different tier-1 logical routers that are connected to the same tier-0 logical router. See Configure Route Advertisement on a Tier-1 Logical Router in Manager Mode.