Planet ADN-4101 User Manual page 61

The DNS system is, in fact, its own network. If one DNS server does not know
how to translate a particular domain name, it asks another one, and so on, until
the correct IP address is returned.
Choose Advanced > DNS. The page as shown in the following figure appears:
The following table describes the parameters in this page.
Field
Wan Connection
Obtain DNS server
address automatically
Use the following
DNS server
addresses
Preferred DNS server
Alternate DNS server
Click Apply to save the settings.
Select the WAN interface of the DNS server to be
connected from the drop-down list.
If you select this radio button, the device
automatically obtains IP address of the DNS server
from the ISP. You need not manually enter the IP
address of the server.
If you select this radio button, you need to manually
enter the IP address of the server provided by the ISP.
Enter the IP address of the primary DNS server.
Enter the IP address of the secondary DNS server. If
the primary DNS server fails to work, the device tries
to connect the secondary DNS server.
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Description