Re: Wireless Problems With DHCP
- From: Jeff Liebermann <jeffl@xxxxxxxxxxxxxxxxxxxxxx>
- Date: Sat, 27 May 2006 18:06:28 -0700
"Mantas" <jacques1704@xxxxxxxxxxxxxx> hath wroth:
I am troubleshooting a wireless network where all laptops with built in
wireless work 100%, as soon as a laptop with a PCMCI wireless card
tries to connect, it is not getting an IP from the DHCP server.
What level of encryption do you have set? WEP, WPA, WPA2? Are you
using a RADIUS server?
The server is Win2k3 SBS and is the only DHCP on the network. AP is
Netgear, PCMCIA cards are Gigabyte.
What model Netgear AP?
What model Gigabyte PCMCIA card?
What model laptops with built in wireless that works? What card?
Numbers please, not vague descriptions.
I have manipulated the AP in every way possible and still no luck.
Have you tried it with encryption disabled?
Laptops with built in Wireless ALWAYS connect and Laptops with wireless
cards NEVER connect.
I'll assume the laptops are running Windoze XP Home with SP2.
Sounds more like a probem with the Gigabyte PCMCIA cards or drivers.
Are you using Windoze Wireless Zero Config or are you using the vendor
supplied Gigabyte wireless drivers?
Have you tried a different model PCMCIA card?
If I, for example, connect wired connection to the laptops with the
wireless cards, they immediately obtain an IP from the DHCP on both LAN
and WLAN. After that happens I can disconnect the cable and network
keeps functioning fine. If I then "Repair" the connection using the
Windows repair function, it again can't get an IP.
Disable the SBS2003 DHCP, enable the Netgear DHCP server and see if
that works. If this fixes the problem, the question remains whether
it's the Gigabyte hardware, Gigabyte drivers, or SBS2003 DHCP server.
I can't tell from here.
Also, you might want to try a DHCP query tool:
| http://www.weirdsolutions.com/weirdSolutions/files/products/desktopSoftware/desktopQueryTool/querytool_free.exe
You don't need an IP address for this tool to work. Type in anything
for the "device identifier". If you have a static IP address setup on
the test client, you'll get 0.0.0.0 from the DHCP server. One common
wireless suprise is connecting to the neighbors wireless DHCP server.
If you're using Wireless Zero Config, you might try turning on
wireless logging and see what it delivers. Be prepared for huge log
files.
| http://support.microsoft.com/default.aspx?scid=kb;%5BLN%5D;328601
Also see:
| http://www.microsoft.com/technet/itsolutions/network/wifi/default.mspx
I also have a wireless network at home and have tested all the PCMCIA
cards on my network and they all work 100%. The only difference between
the two networks is that the AP I use at home is set as the DHCP
server.
What couls be causing this bizarre problem?
Thanks in advance :)
--
Jeff Liebermann jeffl@xxxxxxxxxxxxxxxxxxxxxx
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558
.
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