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Routing
Dynamic DNS
The Domain Name System (DNS) uses name servers to provide a mapping between computer-
readable IP addresses and human-readable hostnames. This allows users to access websites and
personal networks with easy-to-remember URLs. Unfortunately, IP addresses change frequently,
invalidating these mappings when they do. Dynamic DNS has become the standard method of
addressing this problem, allowing devices to update name servers with their new IP addresses.
By providing the Connect IT 16/48 device with the domain name and credentials obtained from a
dynamic DNS provider, the router can automatically update the remote nameserver whenever your
WAN or public IP address changes.
Your Connect IT 16/48 device supports a number of Dynamic DNS providers as well as the ability to
provide a custom provider that is not included on the list of providers.
Configure dynamic DNS
This section describes how to cofigure dynamic DNS on a Connect IT 16/48 device.
Required configuration items
Add a new Dynamic DNS service.
n
The interface that has its IP address registered with the Dynamic DNS provider.
n
The name of a Dynamic DNS provider.
n
The domain name that is linked to the interface's IP address.
n
The username and password to authenticate with the Dynamic DNS provider.
n
Additional configuration items
If the Dynamic DNS service provider is set to custom, identify the URL that should be used to
n
update the IP address with the Dynamic DNS provider.
The amount of time to wait to check if the interface's IP address needs to be updated.
n
The amount of time to wait to force an update of the interface's IP address.
n
The amount of time to wait for an IP address update to succeed before retrying the update.
n
The number of times to retry a failed IP address update.
n
Digi Connect IT® 16/48 User Guide
Dynamic DNS
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