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Suse 10.2: Problem connection to managed WAP: No DHCPOFFERS received

Posted on 2007-03-19
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Last Modified: 2008-01-09
I am running Suse 10.2 on a Lenovo X60.  I am using Knetworkmanager to connect to a wireless network at work.  The network has a managed WAP with shared key.  I can connect to the WAP via Windows, but I am having trouble in Linux.  

The connection starts coming up, and I think the process fails when the machine tries to lease an IP address.  Error message is No DHCPOFFERS received.  No working leases in persistent database - sleeping.  

Do you have any suggestions?
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Question by:cs76737
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5 Comments
 

Author Comment

by:cs76737
ID: 18748549
x60:~ # dhclient eth1
Internet Systems Consortium DHCP Client V3.0.3
Copyright 2004-2005 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/products/DHCP

Listening on LPF/eth1/00:13:02:3a:32:a3
Sending on   LPF/eth1/00:13:02:3a:32:a3
Sending on   Socket/fallback
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 2
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 5
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 9
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
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LVL 14

Expert Comment

by:pablouruguay
ID: 18749803
install wpa_supplicant and modify the file /etc/wpa_supplicant.conf

like this for example

ctrl_interface=/var/run/wpa_supplicant
ap_scan=1
network={
ssid="SSID_WPA"
scan_ssid=0
proto=WPA RSN
key_mgmt=WPA-PSK
pairwise=TKIP CCMP
group=TKIP CCMP
psk="SSID-wpa-version2"
priority=5
}
~      
0
 

Author Comment

by:cs76737
ID: 18750011
Thank you for the reply.  Unfortunately, I am behind a firewall at work, so I can't install anything until I'm back home.

Any other advice?  

The wireless network has a HEX WEP key.  The confusing thing is that I have 2 laptops.  
Laptop #1:  Suse 10.1.  Been using for a while, and it works.  
Laptop #2:  Suse 10.2.  Just installed.  Having problem.

I have to imagine that it is a faulty configuration somewhere.  I compared /etc/dhclient.conf on both machines, and I have the same settings in YAST - network device - network card.  

Any other thoughts?
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LVL 14

Accepted Solution

by:
pablouruguay earned 2000 total points
ID: 18750095
mmm if the key is WEP you dont need wpa_supplicant you only need iwtools like

iwconfig wlan0 ESSID ÿourssid
iwconfig wlan0 key yourkey

after that
dhclient wlan0
and you get the IP.

if not... check with iwconfig if appears a your setting example

wlan0 IEEE 802.11b  ESSID:"LACTER"  Nickname:"LAC1"        <--------------------------------------------- HERE your SSID
          Mode:Managed  Frequency:2.462 GHz  Access Point: 00:0A:F4:4A:33:A8  
          Bit Rate:11 Mb/s   Tx-Power:14 dBm  
          Retry limit:15   RTS thr:off   Fragment thr:off
          Encryption key:AEF5-4CDF-E779-2ACD-5EFA-CBBE-A5   Security mode:open  <-------------  HERE your key encrypted
          Power Management:off
          Link Quality=78/100  Signal level=-56 dBm  Noise level=-56 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:58   Missed beacon:0
0
 

Author Comment

by:cs76737
ID: 18750107
Thank you.  Manual commands worked.
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