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DHCP Server Cleanup

Is there a way to clean up any IP addresses that are issued but not being used by a computer in Windows 2000 Server.
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1 Solution
What lease time have you set?
Unused IP addresses will be released for re-use once the lease has expired.
You can make the lease time shorter if required.

Your DHCP server can be configured for lease IP configuration (not only addresses) for a established time. In the middle of this time, the client try to renew his configuration, and obtain 1/2 leased time minimun (up to new renew).
You should bminimize this time if you have a lot of RRAS connections or you have your subnet suturated, and you can increase this time if you have static PC connecting every day to the LAN.
In few words: try some times for obtain the best ratio of released configurations and get a stable lan with DHCP (don't lease time for 5 minutes -for example-). If after that, you don't have sufficient IP free, then you need to think in change your IP topology: increase your netmask can be a good sollution.

Hello again,

In order to put ideas in order:

You can delete all entries of dhcp leases if yo are sure the pc is now off line, because dhcp is "only" a database of free IP address. Then you can generate "duplicate IP address" in your lan.
The best way is wait until dhscp service cleans automatically leases entries.

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