address dynamically from a DHCP server. The appliance can then update a DNS server
with its name and the dynamic address. Therefore, no matter what dynamic IP address
is assigned to the appliance, you can always use the same name to reach it.
To configure this process, use the following commands:
ciscoasa(config)# dhcp-client update dns server none
ciscoasa(config)# ddns update method ddns-2
ciscoasa(DDNS-update-method)# ddns both
ciscoasa(DDNS-update-method)# exit
ciscoasa(config)# interface physical_if_name
ciscoasa(if-config)# ddns update ddns-2
ciscoasa(if-config)# ddns update hostname appliance’s_FQDN
The dhcp-client update command specifies that the client (the appliance itself),
rather than the DHCP server, will update the DNS server with the dynamic addressing
information.The ddns update and ddns both commands specify that the appliancewill update both the A and PTR DNS records on the DNS server
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