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DHCP Troubles

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by elisamuel.mckenzie

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How can i know if my Server W2K3 is rejecting DHCP request from the clients?

17 replies

by Former member

A router or switch, in a router you can look into the "Browser" and find out. Also if your switch has a "browser" the same applies.

by sajchurchey

May I ask why you think the server is rejecting the DHCP requests?

On one of your clients, you can run the "ipconfig /release" command and try "ipconfig /renew" and see what the computer tells you when it tries to contact the server. This command will work on Windows 2000 and later. If you have something else on your network, let me know, and I will give you the appropriate command.

You may also consider setting one of your clients to a static IP so that you can run some tests. Make sure that you can ping your server and that everything else on the network can be reached. Because if the computer cannot reach the server, it's not going to get an address.

Also, check the "Event Viewer" or other logs on your server to see if there are any errors or clues there.

I hope this helps. Be sure to post any additional information you have or find about the problem.

by elisamuel.mckenzie

Thanks for replied.

I think my server is rejecting DHCP request because it just don't want to give IPs to some clients and theres more than enough address free on the server. I tried everything, even ipconfig. if i enter the ip manually everything works fine, i can ping the server and access all sharings.My Server is 2003 Standard SP2

I check the event log and nothing seems out of normal with the dhcp. I'll really appreciate any help.

by dumphrey

dhcp addresses. Anything odd about them, or do they have anything in common? All on the same subnet? Firewalls all the same? (Off or allowing dhcp.) Any listings in the host event logs after a failed release renew? And what error does it give you in the cmd window when it fails to renew?

by elisamuel.mckenzie

All my computers are in the same subnet.I have turn on and off the firewall on the computer that i'm running test and nothing. When i try to renew, the event that i recieve on the computer is :

Event Type: Warning
Event Source: Dhcp
Event Category: None
Event ID: 1007
Date: 3/25/2008
Time: 2:15:57 PM
User: N/A
Computer: MCKENZIE
Description:

Your computer has automatically configured the IP address for the Network Card with network address 000F1F97B3AA. The IP address being used is 169.254.173.104.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 00 00 00 00 ....

And the cmd screen says :

C:\>ipconfig /renew

Windows IP Configuration

An error occurred while renewing interface Local Area Connection : unable to con
tact your DHCP server. Request has timed out.

Any idea? :(

by elisamuel.mckenzie

These are xp clients, and i have a Windows server 2003 Standard SP2 server and another one of the same but R2

by dumphrey

What happens if you give them static addresses? Do they work as expected then?

by dumphrey

Okay, lets try something....
Open cmd window and type in ipconfig /all
Notice any data esp ip address, gateway, and DNS servers.

Open Network connections, get properties on TCP/IP, make sure its set to auto acquire an address and dns server.

Try ipconfig /release and ipconfig /renew (i know you have, just try once more).
It most likely won't work...
Okay, In network connections, right click on the network interface and disable it. Waita second or two, then enable it, and right click and choose repair. Give it a few seconds, open cmd again and try ipconfig. Any change?

by kjell_andorsen

Are you part of an Active Directory domai, and if so is the DHCP server authorized in Active Directory?

by cheeklets

ip-address for network card.The failure of the DHCP server to respond could be caused by network connectivity issues, DHCP server or DHCP relay malfunction, firewall issues, or a malfunction of your computer's network interface card or driver".

This should help you to resolve the issue.

by elisamuel.mckenzie

I tried almost every trick on the book, it just dont work. I even remove several update that was affecting the DHCP....but guess what, nothing happened. I activated a DHCP server on my FORTIGATE, and everything works fine...if you guys find anything on the subject let me know.

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