Since the DHCP server always assigns the dynamic IP addresses to the client computers which may change from time to time, and the DNS maintains the records of the information about the host names and their corresponding IP addresses, there must be some technology with the help of which the DNS server records can automatically get updated with the latest IP addresses that the DHCP server has assigned to the DHCP clients.
With the help of DNS integration with the DHCP, you can simplify this task and can remarkably reduce the administrative overhead.
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The DHCP protocol does not automatically update DNS in the event that the DHCP server changes the IP address of a client.
I can do a reverse lookup on the IP and that works but not name to IP.
You, as a DHCP administrator, might want to enable DNS integration in order to automatically update the DNS records dynamically with the DHCP client computers’ information whenever the DHCP server assigns the IP address and other settings to them.
DNS servers provide domain name resolution for network resources.
They associate the TCP/IP address assigned by DHCP to a client with its fully qualified domain name (FQDN).