I have computers that have been unplugged from my network and taken out of the LAN. Their leases still exist and were eventually assinged to an active computer. This is causing multiple IP addresses to one active computer and a couple inactive computers. I am trying to get the lease duration to remove this left over data. It's not working and I don't know what I am doing wrong.
Since I have DHCP Dynamically updating DNS records, and DNS scavaging through the zones, my DNS records are also showing multiple computers on the same IP as well.
Now, you would thing this would totally hose up the network. It doesn't seem to effect it at all. But, I just like running a tight ship and hate to see left over data from something that doesn't exist.
FYI: This is the way DHCP is set up. I set it up this way, in case one server goes down the other will administer DHCP.
Lease Pool: 10.49.10.51-10.49.10.151
Lease Pool: 10.49.10.152-10.49.10.252
DNS scavaging set to default of 7 days
DHCP lease duration set to default 8 days.
note: No overlapping scopes or rogue DHCP servers, I have checked may times for Rogue servers.