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Cisco Router and Security Device Manager 2.5 User’s Guide
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Chapter31 Router Properties
Dynamic DNS Methods
Each dynamic DNS method shown will send with its update the hostname and
domain name configured in Configure > Additional Tasks > Router Properties.
However, if you create a dynamic DNS method when configuring a WAN
interface, you can override the hostname and domain name configured in
Configure > Additional Tasks > Router Properties. The new hostname and
domain name will apply only to that dynamic DNS method.
Some dynamic DNS methods are read-only. These were configured in the
Cisco IOS software through the CLI, and cannot be edited or dele ted. To make
these read-only methods editable, use the CLI to change the internal cache or host
group options to HTTP or IETF.
Add Button
Click the Add button to create a new dynamic DNS method.
Edit Button
To edit a dynamic DNS method, choose it from the list of existing dynamic DNS
methods and then click Edit.
Delete Button
To edit a dynamic DNS method, choose it from the list of existing dynamic DNS
methods and then click Delete.
Note A warning appears if you attempt to delete a dynamic DNS method that is
associated with one or more interfaces.
Add or Edit Dynamic DNS Method
This window allows you to add or edit a dynamic DNS method. Set the type of
method by choosing HTTP or IETF.

HTTP

HTTP is a dynamic DNS method type that updates a DNS service provider with
changes to the associated interface’s IP address.