help! Heavy packetloss!

Jun Sun jsun at junsun.net
Mon Jan 19 01:09:59 EST 2004


What is the station firmware version?  I have seen this problem v1.4.2.

Jun

On Sun, Jan 18, 2004 at 11:33:33AM -0800, Bud Smoker wrote:
> dear mailing list,
> 
> i am experiencing issues w/ packetloss on a long range wireless ISP link. 
> 
> i get as low as 30% and as high as 60%. sometimes my syslog dumps strange TXEXC errors printing my HWADDR and the BSSID.
> 
> i read a mail suggesting lowering the maxrate to 5.5M. this did nothing. 
> 
> i also get a lot of TX excessive retries. 
> root at dell:~# iwconfig
> lo        no wireless extensions.
> 
> wlan0     IEEE 802.11b  ESSID:"Interlink3608"
>           Mode:Managed  Frequency:2.422GHz  Access Point: 00:02:2D:38:C8:6F
>           Bit Rate=5.5Mb/s   Tx-Power=24 dBm   Sensitivity=1/3
>           Retry min limit:8   RTS thr:off   Fragment thr:off
>           Encryption key:off
>           Power Management:off
>           Link Quality:42/92  Signal level:-66 dBm  Noise level:-98 dBm
>           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
> --->      Tx excessive retries:2620  Invalid misc:15852   Missed beacon:0
> 
> root at dell:~#
> as you can see the signal level should be strong enough to get fair/good signal.
> 
> changing the output txpower rating does very little.
> 
> here is output from ping :
> --- 208.179.226.1 ping statistics ---
> 499 packets transmitted, 266 packets received, 46% packet loss
> round-trip min/avg/max = 3.6/34.7/352.1 ms
> 
> if there are any secret hacks or fine tuning i can do to reduce packet loss, please 
> advise w/ any possible suggestions. so far my guess is this wireless ISP is designed to put an antenna on your roof,  im using a portable 8dbi patch. maybe my antenna too weak?
> 
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