windows server 2003 - Can I just delete leases in DHCP to force a new lease on client?

22
2014-07
  • drpcken

    I need to force a DHCP renewal on all my clients (to make them point to my new DNS server).

    Some of them have about 4 days left in their leases. Can I just delete the leases from the server? Will this force them to check in to DHCP again and grab another lease or is this a bad idea?

    Thanks

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    windows server 2003 - Centrally assigning DHCP "user class" to clients?
  • Paul Holbrook

    I'm using Windows Server 2003 along with MS's DHCP server. We're making some changes in our environment that we'd like to phase in - these changes will require a different default route, perhaps different DNS servers. All of our clients are Windows - 2000, XP, Vista.

    We'd like to find a way to say "these machines will get THIS default route/DNS, and that set of machines will get another set."

    The DHCP "User Class" feature would seem to be a way to handle this, but I can't find anything about how to centrally assign the "User Class" for a given machine centrally. Everything I've found refers to issuing an ipconfig command on a given machine to change the user class. Is there a different way?

    I suppose that I could arrange it that machines in particular group run a script which issues that command - but is it persistent across boots? The script wouldn't be run until the machine has a DHCP address and connects to the domain, so would it work for the next boot/DHCP renewal?

    Thoughts?


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