[Madwifi-users] link quality

[kasp <wa...@in...>]

Hello!

Today I've set up my first link, so I wanted to ask some questions
about it. Distance between routers is about 550m. I have no experience at
all with wireless, because I'm asking - what all those numbers mean
and are they good enought? For example - what is "link quality" and that
means "level", "noise", "signal level", "noise level"? How about
Tx-power? Card is able to work at 100mW, but what is 20 dBm ?
iwconfig and /proc/net/wireless output on both routers:

1.router
ath0      IEEE 802.11a  ESSID:""
          Mode:Master  Frequency:5.52GHz  Access Point: 00:01:24:70:52:E0  
          Bit Rate:0kb/s   Tx-Power=20 dBm   Sensitivity=0/3  
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:62/94  Signal level:-33 dBm  Noise level:-95 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:4   Missed beacon:0

# cat /proc/net/wireless
Inter-| sta-|   Quality        |   Discarded packets               | Missed | WE
 face | tus | link level noise |  nwid  crypt   frag  retry   misc | beacon | 16
  ath0: 0004   60.  221.  161.       0      0      0      0      4        0



2.router
ath0      IEEE 802.11a  ESSID:""
          Mode:Managed  Frequency:5.52GHz  Access Point: 00:01:24:70:52:E0  
          Bit Rate:36Mb/s   Tx-Power=20 dBm   Sensitivity=0/3  
          Retry:off   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality:60/94  Signal level:-35 dBm  Noise level:-95 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:1  Invalid misc:4   Missed beacon:0

# cat /proc/net/wireless
Inter-| sta-|   Quality        |   Discarded packets               | Missed | WE
 face | tus | link level noise |  nwid  crypt   frag  retry   misc | beacon | 16
  ath0: 0004   61.  222.  161.       0      0      0      1      4        0




  
-- 
Best regards,
 kasp                          mailto:wa...@in...