User's Manual

Section 4 – Troubleshooting
D-Link DSL-2740E User Manual
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DNS
Domain name system (DNS) is an Internet service that translates domain names
into IP addresses. Because domain names are alphabetic, they are easier to
remember. The Internet, however, is actually based on IP addresses. Each time
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 be translated 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.
Choose ADVANCED > DNS. The page shown in the right figure appears.
If you are using the device for DHCP service on the LAN or using DNS servers
on the ISP network, select Attain DNS Automatically.
If you have DNS IP addresses provided by your ISP, enter these IP addresses in
the available entry fields for the preferred DNS server and the alternate DNS
server.
Click Apply Changes to save the settings.
IPv6 DNS
Choose ADVANCED > IPv6 DNS. The page shown in the right figure appears.
If you are using the device for DHCP service on the LAN or using DNS servers
on the ISP network, select Attain DNS Automatically.
If you have DNS IP addresses provided by your ISP, enter these IP addresses in
the available entry fields for the preferred DNS server and the alternate IPv6
DNS server.
Click Apply Changes to save the settings.