Restrictions for Dynamic DNS Support for Cisco IOS Software To access Cisco Feature Navigator, go to An account on is not required. Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document. For the latest feature information and caveats, see the release notes for your platform and software release. Your software release may not support all the features documented in this module. Feature Information for Dynamic DNS Support for Cisco IOS Software.Configuration Examples for Dynamic DNS Support for Cisco IOS Software.How to Configure Dynamic DNS Support for Cisco IOS Software.Information About Dynamic DNS Support for Cisco IOS Software.Restrictions for Dynamic DNS Support for Cisco IOS Software.With this feature, you can define a list of hostnames and IP addresses that will receive updates, specify an update method, and specify a configuration for Dynamic Host Configuration Protocol (DHCP) triggered updates. It provides two mechanisms to generate or perform DDNS: the IETF standard as defined by RFC 2136 and a generic HTTP using various DNS services. The Dynamic DNS Support for Cisco IOS Software feature enables Cisco IOS software devices to perform Dynamic Domain Name System (DDNS) updates to ensure that an IP host DNS name is correctly associated with its IP address. Dynamic DNS Support for Cisco IOS Software

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