Dhcp clients not updating dns

I have set this to match the wired scope for lease of 1 day and Name Protection enabled.

riginally posted this in 4/2006, and updated throughout the years, but I still get questions from time to time asking why updates are not working, especially PTR.Since when you log off the wireless, you're NOT actually releasing the address, the DNS server is keeping that address -- as you have pointed out, for the term of the DHCP lease, or 7 days.You say there are separate VLANs for the wired and wireless networks -- if that also means there are separate DHCP servers, then you're especially in luck... you need to setup Dhcp advanced DNS options to Always dynamically update DNS A and PTR records Also you must set credentials in DHCP server properties, other wise this process will not work This will ensure that when DHCP lease will expires \ changes by any mean on DHCP server, it will update corresponding DNS records Also you need to set DNS scavenging in such a way that no-refresh interval must be set to (half) less than refresh interval This will keep DNS server open for accepting dynamic update more time Also ensure that secure dynamic update is enabled on DNS zone Check below article to understand scavenging process correctly and to identify its relation with DHCP To setup scavenging Mahesh I had the dynamic update and DHCP credentials already in place.Well, I thought it’s time for an update and to just offer a summary in the beginning, because in this day and age, no one wants to read!A quick Facebook read the first line and click “Like,” seems to be the norm. And yea, I had to state Windows 2000 and newer, because this stuff doesn’t apply to older Windows versions.

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