DHCP Help, can't get new reservation

Discussion in 'Microsoft Windows 2000 Networking' started by Guest, Jul 4, 2006.

  1. Guest

    Guest Guest

    I run a 200 person office using active directory on a Windows 2000 SP4
    machine. (also does DNS and Print serving)
    We have DHCP in use with all machines using reserved addresses. Updated the
    machine with the latest updates about 2 weeks ago.

    When I try to add a new reservation, I get this error message:

    An error occurred while accessing the DHCP database. Look at the DHCP server
    event log for more information

    - I can release and renew an existing lease
    - Status shows that I do have leases available
    - No error messages show up in the event logs that correspond to this problem
    - Antivirus does not scan this directory, indexing is not turned on
    - I have about 19 addresses left

    What I have tried:
    - Searched Technet, Google for these symptoms. Lots of descriptions were
    close, but none identical.
    - Tried DHCP shutdown, move database, backup registry, restart DHCP, restore
    registry, reconcile. - Didn't work
    - Tried rebooting :)

    Any suggestions?

    Guest, Jul 4, 2006
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  2. Guest

    Guest Guest

    Sorry folks, found the solution myself. The MAC address I was trying to
    reserve was already in the database. It was for a printer which didn't print
    it's IP address in the configuration page because it was using DHCP. - No
    help there- There were no errors or warnings that the MAC address was in use.
    There was nothing but misdirection. I had to search through a dump of the
    DHCP database to find it. BTW, to dump the database, run this on the server.

    netsh dhcp dump

    Guest, Jul 5, 2006
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