Anycast addressing is supported on loopback interfaces on the NIOS appliance. IP configuration must be defined on the LAN1 interface before configuring DNS anycast addresses. Before creating IPv6 anycast IPs on the loopback interface, IPv6 must be enabled and configured on the LAN1 interface for the NIOS appliance, including the correct IPv6 gateway IP address.
When you add an anycast address, you need to start the service for the advertising to take place. However, when you remove an anycast address, no service restart is required to stop the service. Anycast advertising stops immediately.
To enable and configure anycast addressing:
BGP: Select this if you want the appliance to use BGP to advertise the anycast address, and then configure the BGP settings. This is supported only for IPv4 and dual mode appliances, but not for IPv6 appliances.
You must configure at least one routing method for DNS anycast. You can configure OSPF, BGP, or both (in most cases only one protocol will be used). The appliance cannot save the anycast address if you do not complete at least one routing configuration. Anycast cannot be used without dynamic routing.
6. If using OSPF for the current appliance: Under OSPF Area Configuration, click the Add icon. A new configuration block appears in the properties editor.
7. If using BGP for the current appliance: In the properties editor, scroll down to the configuration block for BGP Configuration. For information, see Configuring BGP in the NIOS Appliance.
8. Save the configuration. The system will warn that you must restart the appliance services in order to use the new configuration.
9. Log back in to the appliance.
10. From the Data Management tab, select the DNS tab -> Members/Servers tab -> Grid_member check box -> Edit icon.
11. Select Toggle Advanced Mode (if necessary), click General and the Advanced tab.
12. Under Listen on these additional IP addresses, click the Add button. The list of one or more previously created IPv4 and IPv6 addresses for the loopback interfaces (created in Step 4) appear in this table. (If the Add button is not active here, this indicates that you have not configured any loopback interfaces with their IP addresses.) Should you need to configure other DNS properties on this page, see the topics in Configuring the Grid to provide DNS Services.
If you remove an IP address from the list of Listen on these additional IP addresses, anycast advertising will stop immediately. No service restart is required to stop anycast from listening on this IP address.
13. Click Save and Close.
Configured anycast interfaces are now enabled to carry DNS traffic. For further information, see Ports.
You can select different options for the restart sequence for anycast service with DNS, when the DNS restart is invoked. You can manage this sequence with the help of CLI commands.
For more information on the CLI commands, see
Infoblox highly recommends that you do the following before you configure an Anycast address:
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