Configure DNS servers and Dynamic DNS Configure DNS Servers
Digi TransPort WR Routers User Guide 353
DNS Server Update parameters
Dynamic DNS is supported in accordance with RFC2136 and RFC2485. This allows routers to update
specified DNS servers with their IP addresses when they first connect to the Internet and at regular
intervals thereafter. The parameters in this section control how the router updates a specified DNS
server with its IP address when it first connects to the Internet and at regular intervals thereafter.
The parameters set here are not to be confused with the popular dynamic DNS service dyndns.com;
there is a separate page for configuring the router to work with dyndns.com. See Configure
Dynamic DNS.
Send an update to DNS Server a.b.c.d for
The IP address in this text box specifies the DNS server that should be sent the updated
information. The server must support DNS Update messages. Dynamic DNS is generally offered
as a subscription-based service by ISPs, but for a large number of deployed routers, it may be
more appropriate to set up a dedicated DNS server locally.
Name
The member of the DNS zone to update. Along with the zone parameter, uniquely identifies the
router. For example, if the router has a name of epos33, the full address of the router is
epos33.mycompany.com.
Zone
The DNS zone to update. When using Dynamic DNS, you must have a domain name. This domain
name can be purchased from an appropriate vendor. Enter this domain name, such as
mycompany.com, in the Zone field.
When the default route changes
Interface x,y becomes active
These settings determine when the update is sent, such as when the default route changes or
when the specified interface becomes active. The drop-down list offers the options of PPP or
Ethernet. In the text box, enter the instance number for the specified interface.
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