DNS Records not updating for DHCP clients

When we setup Microsoft DHCP and DNS servers we found that when client machines obtained new DHCP IP addresses on the local subnet the relevant A and PTR records were not added to the DNS server. This manifested itself when client machines could not be pinged.

Apparently the DNS records are not updated unless a client machine requests it – which does not happen when a new address is obtained.

To change this behaviour:

This is a modified configuration supported for Windows Server 2003-based DHCP servers and clients that are running Windows Server 2003, Windows 2000, or Windows XP. In this mode, the DHCP server always performs updates of the client’s FQDN and leased IP address information regardless of whether the client has requested to perform its own updates.

To configure a DHCP server to register and to update client information with its configured DNS servers, follow these steps:

  1. Open the DHCP properties for the server
  2. Click DNS, click Properties, click to select the Enable DNS dynamic updates according to the settings below check box, and then click Always dynamically update DNS A and PTR records.

 

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Author: James

IT Manager - Network, Web coding, MS SQL and Online Mapping expert

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