Draytek Vigor3900 User Manual page 110

3. After finished the settings on the Basic page, click the Detail Tab to open the following
dialog.
Available parameters are listed as follows:
Item
DNS Parameter
NS Record
MX Record
Description
To configure Vigor router as a DNS server, type the related
information for applying the function of DNS.
TTL – It means Time to live of a DNS response. Available
setting range is from 0 to 2147483647.
Refresh – Set the time for the PC in LAN to refresh the data.
Retry – Set the times of retry if the PC fails to contact with
Vigor router before the refreshing expired.
Expire – PC stops responding to the query from Vigor router
when such time setting has expired.
Negative Cache TTL – Set the negative caching time (name
error).
Email – Type the e-mail address of the administrator.
This page is used to specify name server which will be used
as DNS server.
Add – Click it to add a new server with specified name and
IP address.
Save – Click it to save the settings.
HOST – Type the domain name of the server. This is
optional. If no information added here, the router will use the
DNS server configured in Domain Name under the Basic tab.
Name Server –Type the URL for the name server which
will be used to receive the DNS query forwarded by HOST.
IP Address – This is optional. If required, simply type the IP
address of the NS record server.
This is used to specify the mail server with IP address.
Add –Click it to add a new server with specified name and IP
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Vigor3900 Series User's Guide