Edimax Technology AR-7211B V2 - Manual (Page 56)

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5.5. Service
In the navigation bar across the top of the screen, click Service. The Service
page which is displayed contains DNS, Firewall, UPNP, IGMP Proxy, TR-069
and ACL.
5.5.1. DNS
Domain Name System (DNS) is an Internet service that translates the domain
name into IP address. Because the domain name is alphabetic, it is easier to
remember. The Internet, however, is based on IP addresses. Every time you
use a domain name, DNS translates the name into the corresponding IP
address. For example, the domain name www.example.com might be
translated to 198.105.232.4. The DNS has 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 Service > DNS. The DNS page that is displayed contains DNS and
DDNS.
5.5.1.1. DNS
Click DNS in the left pane, the page shown in the following figure appears.
Field Description
Attain DNS Automatically
When selected, the router accepts the first
received DNS assignment from one of the PPPoA,
PPPoE or MER enabled PVC(s) during the
connection establishment.
Set DNS Manually
If you select this, enter the IP addresses of the
primary and secondary DNS server.