3Com WL-603 - Manual (Page 90)

88 C HAPTER 5: C ONFIGURING THE R OUTER
DNS Domain Name Service (or Server) is an Internet service that translates
domain names into IP addresses. Because domain names are alphabetic,
they're easier to remember. The Internet however, is really based on IP
addresses. Every 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 translate to 198.105.232.14.
Figure 66 DNS Screen
If the DNS information is automatically provided by your ISP every time
you connect to it, check the Automatic from ISP checkbox (this is the
default setting).
If your ISP provided you with specific DNS addresses to use, enter them
into the appropriate fields on the screen and click Apply.
Many ISPs do not require you to enter this information into the Router. If
you are using a static IP connection type, you may need to enter a specific
DNS address and secondary DNS address for your connection to work
properly. If your connection type is dynamic or PPPoE, it is likely that you
do not have to enter a DNS address.