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Windows server 2008 doesn't renew his network configuration after power shutdown

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  • Windows server 2008 doesn't renew his network configuration after power shutdown

    Hello,

    We have different offices in our organisation. Each of them has their own file server (Windows Server 2008 ) and network components (Router, Switch,...). DC is located centrally.
    All the users work with Windows Vista on their machines.

    When there is a power cut in an office, we get problems. When the power comes back up the server comes up quicker than the router and switch and because of this the server doesn't get an ip-address!!

    Is there some setting that will tell the server to renew his network configuration after X amount of time or at least when he has no valid ip-address?

    Thx
    Olivier
    Last edited by biggles77; 6th June 2009, 16:15. Reason: Fix smilie bug

  • #2
    Re: Windows server 2008 doesn't renew his network configuration after power shutdown

    To be perfectly frank, a server should never get it's ip address from DHCP. You should assign a static ip address to the server. Is there some reason you've got the server configured to get it's ip address from DHCP?

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    • #3
      Re: Windows server 2008 doesn't renew his network configuration after power shutdown

      The servers have a static ip-address given by DHCP. It's not been inserted on the server itself.
      We do it this way because we need to manage a lot of these servers (1000+)
      The Vista machines don't have the problem.

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      • #4
        Re: Windows server 2008 doesn't renew his network configuration after power shutdown

        Well in that case the server has a DHCP reservation and not a static address.
        Personally I would change to static addresses but that's your call.

        What you might do is create a local policy which runs a simple startup script like:
        sleep 100 (or something...)
        ipconfig /renew
        Marcel
        Technical Consultant
        Netherlands
        http://www.phetios.com
        http://blog.nessus.nl

        MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
        "No matter how secure, there is always the human factor."

        "Enjoy life today, tomorrow may never come."
        "If you're going through hell, keep going. ~Winston Churchill"

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        • #5
          Re: Windows server 2008 doesn't renew his network configuration after power shutdown

          how big a power outage are you talking about ?

          Put it on a ups.. ;P

          Also - even if the server comes u before the switch, assuming dhcp is working properly, your server should keep it's lease...that's how dhcp is meant to work..
          Please do show your appreciation to those who assist you by leaving Rep Point https://www.petri.com/forums/core/im.../icon_beer.gif

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          • #6
            Re: Windows server 2008 doesn't renew his network configuration after power shutdown

            It will indeed keep it's lease however if it's disconnected during boot, he can't renew his address.
            Marcel
            Technical Consultant
            Netherlands
            http://www.phetios.com
            http://blog.nessus.nl

            MCITP(EA, SA), MCSA/E 2003:Security, CCNA, SNAF, DCUCI, CCSA/E/E+ (R60), VCP4/5, NCDA, NCIE - SAN, NCIE - BR, EMCPE
            "No matter how secure, there is always the human factor."

            "Enjoy life today, tomorrow may never come."
            "If you're going through hell, keep going. ~Winston Churchill"

            Comment


            • #7
              Re: Windows server 2008 doesn't renew his network configuration after power shutdown

              Originally posted by tehcamel View Post
              Also - even if the server comes u before the switch, assuming dhcp is working properly, your server should keep it's lease...that's how dhcp is meant to work..
              Not true.

              Once the server has lost its power it releases the DHCP lease and when it boots back up it asks for another address from the DHCP server. If the address hasn't been re-issued somewhere else (in this case it shouldn't) and the DHCP server is available then it will get the same address.

              If the server doesn't get a reply from the DHCP server then the server should issues itself an APIPA address, 169 address.

              At least thats my understanding of it.

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