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From: David Gibson (davidgibson.dropbear.id.au)
Date: Tue Jan 15 2002 - 16:48:52 CST
On Tue, Jan 15, 2002 at 01:22:38PM +0200, Erno Kuusela wrote:
> i want to see the signal quality metrics for a few other devices/access
> points. i understand i have to use ad-hoc mode in order to do that.
> however, here's what happens:
> sh-2.03# iwconfig
> lo no wireless extensions.
> Warning : Device eth0 has been compiled with version 11
> of Wireless Extension, while we are using version 12.
> Some things may be broken...
> eth0 IEEE 802.11-DS ESSID:"Monica" Nickname:"familiar"
> Mode:Ad-Hoc Frequency:2.412GHz Cell: 00:60:1D:F1:20:CF
> Bit Rate:5.5Mb/s Tx-Power=15 dBm Sensitivity:1/3
> Retry limit:4 RTS thr:off Fragment thr:off
> Encryption key:off
> Power Management:off
> Link Quality:0 Signal level:0 Noise level:0
> Rx invalid nwid:0 invalid crypt:0 invalid misc:0
> sh-2.03# iwspy eth0 + 00:60:1D:F1:20:CF
> sh-2.03# cat /proc/net/wireless
> Inter-| sta-| Quality | Discarded packets
> face | tus | link level noise | nwid crypt misc
> eth0: 0000 0 0 0 0 0 0
The overall statistics are meaningless for an ad-hoc network, because
signal levels vary per host. To get the iwspy stats you'll need to
use the iwspy tool, and in any case the stats won't be updated until
you actually receive a packet from the host in question.
-- David Gibson | For every complex problem there is a davidgibson.dropbear.id.au | solution which is simple, neat and | wrong. -- H.L. Mencken http://www.ozlabs.org/people/dgibson