Enabling DNS Resolution

You can specify a network server to perform domain name queries and specify up to two name servers for resolving a DNS name. You can specify the IP address of a preferred name server and that of an alternate name server, plus use a search list for performing partial name resolution.
To enable DNS resolution for the Master Grid:

1. Multi-Grid Master: From the Master Grid tab, click Master Grid Properties -> Edit from the Toolbar.
   Member: From the Master Grid tab, select the Members tab -> master_grid_member checkbox, and then click the Edit icon.
   To override an inherited property, click Override next to it and complete the appropriate fields.
2. In the Master Grid Properties or Master Grid Member Properties editor, select the DNS Resolver tab, and then enter the following:
   • Enable DNS Resolver: Select the checkbox to enable the appliance to send DNS queries to the preferred or alternate name servers whose IP addresses you specify in the following fields.
     Click the Add icon and enter the IP addresses of the servers to which the appliance sends queries. The appliance attempts to send queries to the servers in the order they are listed if it does not receive a response from a listed name server. To move a server up or down on the list, select it and drag it to its new location or click the up and down arrows.
   • Search List: You can define a group of domain names that the appliance can add to partial queries that do not specify a domain name. For example, if you define a RADIUS authentication home server as "as1", and you list "corp100.com" and "hq.corp100.com" in the domain group list, then the appliance sends a query for "as1.corp100.com" and another query for "as1.hq.corp100.com" to the preferred or alternate name server.
     To add a domain name, click the Add icon and type a domain name in the Search List field. To remove a domain name from the group, select it, and then click Delete.
3. Save the configuration.