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Windows Thread, forcing dhcp renew across network in Technical; ok changed ip setup numbering to be in align with lea recommendations.. Anyway some clients till got old ip number ...
  1. #1

    russdev's Avatar
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    forcing dhcp renew across network

    ok changed ip setup numbering to be in align with lea recommendations..

    Anyway some clients till got old ip number as they have not renew yet..

    Is there anyway of forcing all clients on network to renew themselves

    Russ

  2. #2

    Geoff's Avatar
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    Re: forcing dhcp renew across network

    reboot them or try these commands:

    Code:
    ipconfig /release
    ipconfig /renew

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    mark's Avatar
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    Re: forcing dhcp renew across network

    Force the DHCP lease renewal do you mean?

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    russdev's Avatar
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    Re: forcing dhcp renew across network

    yes

    rebooted w/s them seems like they have kept old number still

    but dont fancy going around 100 odds computers and renew them all by hand

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    Ric_'s Avatar
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    Re: forcing dhcp renew across network

    If you unplug the network cable and then plug it in again I think that they renew - I seem to remember doing this at some point.

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    Dos_Box's Avatar
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    Re: forcing dhcp renew across network

    You could just shout down all the clients and flush the DHCP and DNS cache too.

  7. #7

    russdev's Avatar
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    Re: forcing dhcp renew across network

    so how do you do that have brain dead moment

    russ

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    ChrisH's Avatar
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    Re: forcing dhcp renew across network

    I assume he means execute the command on all computers using something like psexec and text files of your computer names.

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    Ric_'s Avatar
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    Re: forcing dhcp renew across network

    I think Dos_Box meant shut down all the clients and make sure that all the leases have been deleted from the DHCP server.

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    russdev's Avatar
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    Re: forcing dhcp renew across network

    did that first time around i think problem is it was left on default lease of 60 days so not going to look for new one for 60 days.

    Russ

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    Re: forcing dhcp renew across network

    Can you not just power down, delete their lease entries on the DHCP server and reboot?

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    Dos_Box's Avatar
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    Re: forcing dhcp renew across network

    I did mean shut down. It must have been something Fraudian going on there.

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    russdev's Avatar
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    Re: forcing dhcp renew across network

    yer tried pwoering down and deleting but still gets old ips even through they have been taken out of range

    only thing i can think is was set to keep ip for 60 days so not looking to renew it yet hence want to try and renew it gloabbly

    cant use psexec as when release losses net connection

    only

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    Dos_Box's Avatar
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    Re: forcing dhcp renew across network

    Use the /renew switch would be your best bet, but if you have 2 DNS servers and you don't deleate the records from both then you may have problems with ghost IPs' popping up.

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    Re: forcing dhcp renew across network

    Pick up a copy of ADSI scripting for Windows 2000 ... there is a WMI call in there for doing this remotely. Unfortunately my spare copy is at work (my real copy is with one of the other guys!)

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