reporting received signal strength to remote side

Jason Straight jason
Wed Nov 19 06:09:01 PST 2003

Hash: SHA1

On Tuesday 18 November 2003 22:16, Jouni Malinen wrote:
> "Wireless Link Test" uses proprietary data frames (i.e., IEEE 802.11
> data with own LLC header (if I remember correctly)) for requesting and
> sending this signal information. Processing of these requests is
> implemented in firmware and the driver does not get any information
> about requests. However, I have not tried to send the request myself and
> what happens with the response.. You can use a wireless sniffer to see
> those frames, so it should be relatively easy to send identifical frame
> to test this. Of course, it would be even easier, if a specification of
> the used frame format were available.
> I remember some changes in the recent Prism2/2.5/3 firmware versions on
> this area and it might be possible to receive some of these frames by
> configuring the card in special mode (promiscuous?). I'm not sure
> whether this is required for receiving the replies, though.
> It has been a while since I last experimented with these frames, so I'm
> not sure if I remembered everything correctly.. Anyway, if you can
> easily make a sniffer log of some of the frames from Orinoco/Proxim AP
> (and replies from a STA), they could be useful for making some quick
> tests.

Ok, this should be what you are looking for. I clipped out the frames I took 
to be unrelated. If you need more I can send you the entire dump.

The SMC 63:67:33 is a linux client running hostap drivers.
The Lucent is of course the orinoco COR.

Thanks for looking into this, I would love to be able to use my linux laptop 
to test links to access points and see both sides without relying on 
proprietary orinoco to do it.

- -- 
Jason Straight
jason at
jason at
SkyCon Networks
phone: (231)627-3528
ICQ: 1796276
Version: GnuPG v1.2.3 (GNU/Linux)

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