DCHP Server Problem

Micosoft / I am using hp proliant ml...
March 3, 2009 at 06:12:01
Specs: Windows Server 2003, Intel(R)Xeon(R) 2.33GHz CPU/2.00GB Ram
Please bear with me, it is a long story so as to explain as it is. Please help.

I am on a CAT5 wired LAN with a DHCP Server originally running Windows Server 2003 Standard Version Service Pack 1. This was working very well. But lately, I came across Service Pack 2 which I downloaded and installed erroneously as I did not follow certain important steps that I have just discovered which I should have adhered to especially doing some file backups before upgrading to Service Pack2.
As a result the Server is unable to see the client computers on the network and hence cannot do the DHCP functions at all. The DHCP under Service Pack2 is stopping running from time to time automatically.
The client computers are able to see each other on the LAN when one uses Mynetwork Places but they cannot see the Server either. I would like to restore back to Service Pack 1. Is it feasible, if so how can I do that? I have tried all sorts of things, using Manage Your Server components, to make the Server work accordingly under Service Pack2 but to no avail. Has anyone out there got a solution. I have more than 100 computers to work with and allocating static IP addresses is very cumbersome and prone to security problems.

So I need your utmost assistance.

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March 3, 2009 at 06:21:08
By the way I forgot to mention that all the Client Computers are on Windows XP Professional Service Pack 2.


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March 3, 2009 at 09:24:28
Have a look at this, seems like the answer was to turn off windows firewall!


this is similar as well,


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March 4, 2009 at 06:31:16
I have looked thru the 2 links and nothing has worked so far.
I have noticed something odd, in the Windows Services the DHCP is showing started and automatic but when I do ipconfig /all the DHCP is showing Disabled. I have the Server IP address as Static ( and I cannot put "Obtain an IP address automatically" since I have got to put in the Default Gateway parameters for the router to be able to get to our ISP and then Internet.

So how do I go about resolving this problem? The Server as I said cannot give out IP addresses to the client computers on the Network as it is not even able to see them.

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March 4, 2009 at 07:28:44
I have noticed something odd, in the Windows Services the DHCP is showing started and automatic but when I do ipconfig /all the DHCP is showing Disabled.

This is because DHCP is running as a service on the server. Ergo it should be set to automatic and started. If it wasn't started, that would be a problem. As to the output of your ipconfig /all command, that's showing you that your NIC is not set to DHCP but static. This is also correct, one should always statically assign server IP's.

This doesn't mean the DHCP service on the server is disabled, it just means your NIC is not enabled to get an IP from DHCP because you've statically assigned the IP.

With regard to how to fix this....if it were me, I would try shutting the DHCP server off completely and then bring it backup and reconfigure the server's scope etc. Then I would reboot the server and see if that doesn't fix the issue.

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March 5, 2009 at 08:14:58
Curt R,

Your suggestions coupled with some attempts I did the Server has started handing out IP addresses to client computers. I had to use a spare NIC on the DHCP server and then reinstalled the DHCP all over again with fresh server's scope, etc.

I suspect I messed up some parameters on the usual NIC I have been using all along.

Thank you all. I won't forget to get back when need arises.

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March 5, 2009 at 13:59:42
Always a pleasure to help!

Thanks for getting back to us and letting us know. You may end up helping someone else with a similar problem just because you took the time to do so.

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