DSL-2640U Wireless ADSL2+ Router with Ethernet WAN Support
User Manual
Configuring via Web-based Interface
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On the Advanced / DNS page, you can add DNS servers to the system.
Figure 96. The Advanced / DNS page.
DNS servers are used to determine the IP address from the name of a server in Intranets or the
Internet (as a rule, they are specified by an ISP or assigned by a network administrator).
You can specify the addresses of DNS servers manually on this page or configure the router to
obtain DNS servers addresses automatically from your ISP upon installing a connection.
!
When you use the built-in DHCP server, the network parameters (including DNS servers)
are distributed to clients automatically.
If you want to configure automatic obtainment of DNS servers addresses, move the Manual switch
to the left (use the DNS IPv4 section for IPv4 and the DNS IPv6 section for IPv6). Then move the
Default gateway switch to the left and from the Interface drop-down list select a WAN
connection which will be used to obtain addresses of DNS servers automatically. If you want the
router to use the default WAN connection to obtain addresses of DNS servers, move the Default
gateway switch to the right. Then click the APPLY button.
To specify a DNS server manually, move the Manual switch to the right (use the DNS IPv4
section for IPv4 and the DNS IPv6 section for IPv6). In the Name Servers IPv4 or Name
Servers IPv6 section, click the ADD SERVER button, and in the line displayed, enter an IP
address of the DNS server. Then click the APPLY button.
To remove a DNS server from the page, click the Delete icon ( ) in the line of the address and
then click the APPLY button.
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