Users not Getting Ip adress From DHCP server on Dell Laptops

Posted on 2008-10-17
Last Modified: 2013-11-09
Presently I have 3 wireless access points (HP Procurve 4200 & 2 Apple air port extremes) that when users on Dell D620 Laptop's connect to they do not get an IP address from the DHCP server (Windows Server 2003). The lap tops will get an IP from other access points with built in DHCP or wireless points that use other DHCP server. They are able to communicate with the access point once a hard coded IP is entered but this is an issues as they are very mobile users. The DHCP server will server IP's to IBM laptops on the wireless and  to hard wired PC's with room to deal out a few hundred more IP's.
I was wondering if anyone has any ideas about this, something to do with the Procurve and the Dells or the DHCP server. Just any help would be much appreciated.
Question by:zyphen00
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Expert Comment

ID: 22743895
I think the problem at the access points , you have to configure or allow DHCP relay agent to let DHCP traffic go throw.

I hope that help

Author Comment

ID: 22744068
Its allowing other PC's to connect to it just Not liking the Dell D620's.

Expert Comment

ID: 22744886
I followed these directions I found on SonicWalls webiste:

I am using a Dell Latitude D620 with Vista Enterprise Edition - I can now get a valid IP address from DHCP - give it a try and see if it works for you.

The issue is caused by a lack of a correct association on the SonicWALL between the computer running Windows Vista and its assigned IP address. Follow these steps to work around the issue by editing the System Registry:

Click the Start button.
Select All Programs > Accessories.
Right click Command Prompt and click Run as administrator.
Type regedit.exe and press enter.
Go to the following location: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
Right click this entry and select New Dword.
Rename the new entry ArpRetryCount (leave it set to 0 by default).
Restart the computer.

from :

Expert Comment

ID: 22746194

You could check the MAC-address of your Dell laptops and add them by hand into your problematic  accesspoint.
LVL 44

Expert Comment

ID: 22746622
> I am using a Dell Latitude D620 with Vista Enterprise Edition

But in the Tags it says XP, not vista.

After connecting and getting the APIPA range (169.254.x.x /16) address, can you right-click on the adapter, choose Repair, and manage to get a proper IP address via DHCP on the second try?

Expert Comment

ID: 22749375
The IBM laptop's are you using thinkvantage wireless manager? or windows wireless manager? For the dells are you using Intel Pro wireless? or windows wireless?
Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.


Author Comment

ID: 22762703
Darr247 > no It will not get an IP address with the repair or ipconfig command line refresh

Author Comment

ID: 22762707
leonjs > Both use the windows wireless manager.

Expert Comment

ID: 22762883
I would still recommend the post I mentioned earlier:

You could check the MAC-address of your Dell laptops and add them by hand into your problematic  accesspoint (reserver IP from dhcp-pool)

Author Comment

ID: 22762915
Im going to give that a try first thing tomorrow and let you know if its working.

Expert Comment

ID: 22763000
Yes, keep us posted. I had same kinda problems on a bit tinier enviroment and it solved my problems by reserving dhcp-ip from the pool based on the mac-address of my desktop/laptop machines.

Accepted Solution

zyphen00 earned 0 total points
ID: 23025933
Looks like after updating the firmware a few more times it fixed its self

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