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Because domain names are alphabetic, they' are easier to
remember. The Internet however, is really based on IP
addresses. Every time when you use a domain name, a DNS
service must translate the name into the corresponding IP
address. For example, the domain name www.example.com
might translate to 198.105.232.4.
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.
4.4.7.1 DNS Server
In this interface, you can modify the DNS server settings.
Figure 118 DNS Server Configuration overview
If the
Enable Automatic Assigned DNS
check box is selected,
this router accepts the first received DNS assignment from one
of the PPPoA, PPPoE or MER/DHCP enabled PVC(s) during
the connection establishment.
If the check box is not selected, enter the primary and optional
secondary DNS server IP addresses. The page is as below.