Re: Re: ad-hoc between different types of cards (Stephen G Smith)

Hello!

IP address at each end was set up using
   ifconfig wlan0 addr

The Linksys WUSB11 card (atmel driver) iwconfig output
shows signal level = 77, noise level = 0.  (no units
given), Cell: 02:00:A7:90:FE:DC

The USRobotics PCMCIA card (hostAP driver) iwconfig
output shows signal level=-90dB and noise level=-90dB.
 Cell=00:00:00:00:00:00

Could it be that the signal or noise levels are the
reasons why the USRobotics card is not detected by the
LinkSys USB card in ad-hoc mode?

Thank you for the help,

Dilip Joseph

Stephen Smith wrote:

>how did you set up the ip addresses on each end?

>Stephen Smith


>Dilip joseph wrote:

>>Hello!
>>
>>We are trying to set up an ad-hoc network between a
>>Linksys WUSB11 ver 2.6 wireless card (Linux
>>2.4.18,at76c503 ver 10) and a USRobotics 802.11b
>>PCMCIA card on Linux 2.4.18-3 (hostAP 0.0.3 driver),
>>as part of a student project.  Although both cards
are
>>set to ad-hoc mode, same essid and channel, we are
>>unable to ping one machine from one another.  Would
>>some one please help?
>>
>>
>>Our USRobotics card gave the following iwconfig
>output:
>>--------------------------------------------------------------------
>>wlan0     IEEE 802.11b  ESSID:"test"
>>          Mode:Ad-Hoc  Frequency:2.437GHz  Cell:
>>00:00:00:00:00:00
>>          Bit Rate:2Mb/s   Tx-Power:-3 dBm 
>>Sensitivity=1/3
>>          Retry min limit:8   RTS thr:off   Fragment
>>thr:off
>>          Encryption key:off
>>          Power Management:off
>>          Link Quality:0/92  Signal level:-90 dBm
>>Noise level:-90 dBm
>>          Rx invalid nwid:0  Rx invalid crypt:0  Rx
>>invalid frag:0
>>          Tx excessive retries:0  Invalid misc:0 
>>Missed beacon:0
>>----------------------------------------------------------------------
>>
>>Then we started the atmel driver on the other
machine
>>with USB wireless card.  The iwconfig output was as
>>follows:
>>--------------------------------------------------------------------
>>wlan0     IEEE 802.11-DS  ESSID:"test"
>>          Mode:Ad-Hoc  Channel:6  Cell:
>>02:00:A7:90:FE:DC
>>          Bit Rate=2Mb/s
>>          RTS thr=1536 B   Fragment thr=1536 B
>>          Encryption key:off
>>          Power Management:off
>>          Link Quality:0  Signal level:77  Noise
>>level:0
>>          Rx invalid nwid:0  Rx invalid crypt:0  Rx
>>invalid frag:0
>>          Tx excessive retries:0  Invalid misc:0 
>>Missed beacon:0
>>
>>--------------------------------------------------------------------
>>We noticed that CELL, signal levels and noise levels
>>are different in the 2 cards. 
>>
>>We then looked at the syslog output after setting
>>"iwpriv wlan0 set_debug 0x180003" as mentioned on
the
>>website. We found that our USRobotics card was not
>>even detected in the BSS table on the device
startup.
>>The dmesg output is given below.
>>
>>Is it likely that the two cards are incompatible or
is
>>there any other problem with configuration?  Kindly
>>help.
>>
>>Thank you.
>>
>>With warm regards,
>>
>>Dilip
>>
>>
>>dmesg output while loading the driver with debug on:
>>##########################################
>>
>>at76c503.c: wlan0 params: ssid test (74657374) mode
>>adhoc wep disabled key 0 keylen 0 preamble long rts
>>1536 frag 1536 txrate 1 excl 0 pm_mode
>>1 pm_period 0
>>at76c503.c: wlan0: state 8 -> 1 (SCANNING)
>>at76c503.c: wlan0 BSS table (curr=00000000,
>>new=00000000):
>>at76c503.c: wlan0 BSS table (curr=00000000,
>>new=00000000):
>>at76c503.c: wlan0: state 1 -> 6 (JOINING)
>>at76c503.c: wlan0 find_matching_bss: returned
00000000
>>at76c503.c: wlan0: state 6 -> 8 (STARTIBSS)
>>at76c503.c: using BSSID 02:00:a7:90:fe:dc

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