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Users not Getting Ip adress From DHCP server on Dell Laptops

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.
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zyphen00
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zyphen00
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1 Solution
 
EL-SHIMYCommented:
HI THERE...
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
SHIMY
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zyphen00Author Commented:
Its allowing other PC's to connect to it just Not liking the Dell D620's.
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EL-SHIMYCommented:
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 : http://forums.microsoft.com/TechNet/ShowPost.aspx?PostID=1022914&SiteID=17
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ifreqCommented:
Greetings,

You could check the MAC-address of your Dell laptops and add them by hand into your problematic  accesspoint.
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Darr247Commented:
> I am using a Dell Latitude D620 with Vista Enterprise Edition

But in the Tags it says XP, not vista.


zyphen00,
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?
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leonjsCommented:
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?
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zyphen00Author Commented:
Darr247 > no It will not get an IP address with the repair or ipconfig command line refresh
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zyphen00Author Commented:
leonjs > Both use the windows wireless manager.
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ifreqCommented:
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)
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zyphen00Author Commented:
Im going to give that a try first thing tomorrow and let you know if its working.
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ifreqCommented:
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.
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zyphen00Author Commented:
Looks like after updating the firmware a few more times it fixed its self
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