Note: Since the LoadMasters which were configured previously in this document are configured as edge facing, with eth0 connected to the public Internet and the NLS traffic as internal only, a dedicated LoadMaster for NLS geographic load balancing is used for full segregation. It is also possible to use a single LoadMaster for both edge facing traffic and internal GSLB traffic by assigning an internal-only interface for internal GSLB traffic through modification of the Use for GEO Responses and Requests option which is available on each interface.

To configure geographic load balancing for NLS, follow the steps below in the LoadMaster WUI:

  1. In the main menu, expand Global Balancing and click Manage FQDNs.
  2. Click Add FQDN.

  3. Enter the New Fully Qualified Domain Name to be used for NLS and click Add FQDN.
  4. Click OK.

  5. For Selection Criteria choose Location Based.
  6. Tick the Fail Over check box.
  7. Enter the IP addresses assigned to the NLS Virtual Services in each site, clicking Add Address after entering each one.
  8. For each IP address:
    1. Select Tcp Connect as the Checker.
    2. Enter the IPv4 address of the NLS Virtual Service in the Addr text box.
    3. Enter port 443.
    4. Click Set Addr.
  9. In the main menu, select IP Range Selection Criteria.

  10. In the Add a new custom location text box, enter a name for the custom location, for example US West and click Add Location.

  11. In the Add a new IP address text box, enter the IPv4 subnet where each NLS resides and click Add Address.

  12. Click Modify.

  13. Then, select the custom location from the drop-down list.
  14. In the main menu, click Manage FQDNs.

  15. Click Modify.

  16. For the first IP address click Show Locations.

  17. From the Available Locations list, select the custom location which was created previously and click > to add it to the Assigned Locations list
  18. Click Save Changes.
  19. Repeat these steps for the second IP address, this time creating and choosing a different custom location.
  20. Refer to the GEO, Feature Description document for guidance on configuring DNS delegation for the NLS FQDN.