DHCP server failed how do I get the workstations to find the new DHCP Server

Posted on 2006-04-23
Last Modified: 2010-08-05
My primary DC/DHCP server failed yesterday.  When the users login Monday, the workstations won't find the server.  How do I get the workstations to find the new DHCP server when they login on Monday?  I have a secondary DC/DHCP server with a different Address pool.  I believe the lease time on the server that failed was set at 1 day.  Both are Windows 2003 SP1


Question by:jrsitman
    LVL 95

    Accepted Solution

    DHCP is broadcast based - any server that is handing out DHCP addresses will be usable by the workstations, no special config needed.  If your lease hasn't expired, it should autorenew after HALF of the lease duration - so if the lease duration is 1 day, the renewal should occur at 12 hours.

    If your clients are not getting an assigned address from the new server, make sure the new server's DHCP server is authorized and confirm it's bound to the appropriate network adapter/IP address.

    Author Comment

    How do I verify it's authorization and make sure it's bound to the network?  We only have one Domain.
    LVL 95

    Expert Comment

    by:Lee W, MVP
    If you go into DHCP Administrator, does it say it's authorized?  If not, right click and authorize it.  As for verifying the bindings, go through the properties of the DHCP server (not the scope or a sub item).  I don't recall exactly where the setting is, but I had a problem with DHCP bindings the other day when I swapped network card purposes at a client.

    Author Comment

    Yes it's authorized.  The bindings are located in the properties of the server on the advanced tab.

    Thanks for the help.

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