Override DNS Configuration

About this task

Domain Name System (DNS) is a hierarchical naming system for resources connected to the Internet or a private network. Primarily, DNS resources translate domain names into IP addresses. If one DNS server doesn't know how to translate a particular domain name, it asks another one until the correct IP address is returned. DNS enables access to resources using human friendly notations. DNS converts human friendly domain names into notations used by different networking equipment for locating resources.

As a resource is accessed (using human-friendly hostnames), it's possible to access the resource even if the underlying machine friendly notation name changes. Without DNS, in the simplest terms, you would need to remember a series of numbers (123.123.123.123) instead of an easy to remember domain name (for example, www.domainname.com).

To override DNS configuration:

Procedure

  1. Select Configuration → Devices from the web UI.
    The Device Configuration screen displays a list of managed devices or peer controllers, service platforms, or access points.
  2. Select a target device by double-clicking on the device name.

    You can also select a target device from the lower, left-hand pane of the Web UI.

    The selected device's configuration menu displays.
  3. Expand Profile Overrides → Network and select DNS.
    The selected device's DNS configuration screen displays.
    Click to expand in new window
    Profile Overrides - Network - DNS Configuration Screen
  4. In the Domain Name System (DNS) field set the following configurations:
    Domain Name Provide the default Domain Name used to resolve DNS names. The name cannot exceed 64 characters.
    Enable Domain Lookup Select the check box to enable DNS. When enabled, human friendly domain names are converted into numerical IP destination addresses. The radio button is selected by default.
    DNS Server Forwarding Select this option to enable the forwarding DNS queries to external DNS servers if a DNS query cannot be processed by local DNS resources. This feature is disabled by default.
  5. In the DNS Servers field, provide the IP addresses of up to three Name Server resources available to the access point.
  6. In the DNS Servers IPv6 field, set the following configurations:
    IPv6 DNS Name Server Provide the default domain name used to resolve IPv6 DNS names. When an IPv6 host is configured with the address of a DNS server, the host sends DNS name queries to the server for resolution. A maximum of three entries are permitted.
    IPv6 DNS Server Forward Select the check box to enable IPv6 DNS domain names to be converted into numerical IP destination addresses. The setting is disabled by default.
  7. Click OK to save the changes.
    Click Reset to revert to the last saved configuration.
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