You can add a loopback port to a tier-0 logical router.

The loopback port can be used for the following purposes:

  • Router ID for routing protocols
  • NAT
  • BFD
  • Source address for routing protocols


Verify that Manager mode is selected in the NSX Manager user interface. See NSX Manager. If you do not see the Policy and Manager mode buttons, see Configure the User Interface Settings.


  1. With admin privileges, log in to NSX Manager.
  2. Select Networking > Tier-0 Logical Routers.
  3. Select the tier-0 logical router.
  4. Select Configuration > Router Ports
  5. Click Add.
  6. Enter a name and optionally a description.
  7. Select the Loopback type.
  8. Select an edge transport node.
  9. Enter an IP address in CIDR format.


A new port is added for the tier-0 router.