Re: ad-hoc between different types of cards

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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>  
>