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PC not pulling IP from Router

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#1 panthersfan25


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Posted 18 November 2013 - 07:28 AM

Good Morning All,


We have recently installed a new server, Windows Server 2008, and set up DHCP on it, we have 30 computers and devices (i.e. phones, iPads, etc) and all of them are pulling ip addresses from the server and show up on the DHCP server except the 2 Dell Optiplex 9010 (The only 2 we have).  They are brand new, when I turn the dhcp back on on the router, they connect to the router fine.  But when I turn that off and just try to use the server, it will not connect gives me an Auto IP 169.xxx.xxx.xxx.  If I set it manually to one of the ip's in the scope we created it will connect fine to the Internet and internal network, but still doesn't show up in the dhcp server that it is using one of the ip's available.


Any ideas what we can try to resolve this, please let me know if you need anymore info.



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#2 CaveDweller2


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Posted 18 November 2013 - 02:33 PM

Just shooting from the hip and I will admit right up front I don't know that much about Server 2k8. But If they pull IPs from the router and you can assign an IP in the range of the server's pool then there is something in the config of the DHCP that is blocking those machines. Is there some sort of security for getting IP addresses from Server 2k8's DHCP "service"? Also you could get fire up Wireshark and capture the packets to see if the machines are ARPing and getting responses from the server.

Hope this helps thumbup.gif

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#3 coxchris


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Posted 18 November 2013 - 02:52 PM

Do you have any Health checks & prevention from having these two computers  on your network,. you can try to force  to update group policy or network policy on these two computer. 


Are they join to the domain 

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