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Windows Thread, Rule 87 in Technical; In case no one else has come across this one yet.... Server 2003 DHCP breaks when you reach the 87th ...
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    m25man's Avatar
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    Rule 87

    In case no one else has come across this one yet....

    Server 2003 DHCP breaks when you reach the 87th reservation.

    Why! I hear you all ask do you want 87 reservations?

    Because it's the easiest way of making all your static devices keep programmable network addresses thats why...

    But, due to a bug in 2003 server (there is a hotfix but it won't be included until SP2 and it's still being regression tested) when you reach reservation 87 your DHCP console breaks and you won't be able to open it!

    http://support.microsoft.com/?kbid=902954

    Using the command line net sh as described here you can set a bogus reservation and voila everything works again.

    This has to be one of the most bizarre DHCP issues I have seen to date.
    Hope everyone who reads this logs it into the memory banks!

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    Re: Rule 87

    Thanks for the heads up here, Onlt have about 20 at the moment but its bound to grow. Managed Switchs, Wireless AP's, Printers, Etc

    Barry

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    Re: Rule 87

    ouch!

    Thanks for that. We aren't near that number yet, but growth is coming and I'll file that one...

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    Re: Rule 87

    We are past that ... and not noted the bug yet ... but perhaps we just having been trying hard enough ...

    Thanks for the heads up Geoff ... I will forward onto the team.

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    Re: Rule 87

    Good to know thanks for that.

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    Re: Rule 87

    That is good to know as I was looking at using reservations for all the clients some time soon for internet access control.

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    Re: Rule 87

    Thanks for that, we are approaching it rapidly with all my new gadgetry

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    Re: Rule 87

    We are well past 87 reservations and have no problems accessing the DHCP console! (remotely or on the DHCP server itself)

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    Re: Rule 87

    Quote Originally Posted by Frazer
    We are well past 87 reservations and have no problems accessing the DHCP console! (remotely or on the DHCP server itself)
    It's only the 87th reservation or 87th Scope that is affected.
    If you enter the 86,87 & 88th reservation into your scope table at the same time you will never experience it.

    If you enter them randomly over a period of time on the 87th reservation if you then leave the DHCP console and try to return you will be locked out.

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