Re: background scanning, like Windows XP?

On Thu, 29 Aug 2002 17:57:29 -0600 (MDT)
"M. Warner Losh" <[email protected]> wrote:

> In message: <[email protected]>
>             Kevin Lahey <[email protected]> writes:
> : What am I missing?  Is there some secret incantation to get
> : this to work?  Does it work on FreeBSD or OpenBSD, and I've
> : just been too dim to notice?
> 
> FreeBSD has off-line scanning only. [...] Prism2 firmware, as documented,
> doesn't seem to support this.  

Ahh, that was my chief concern.  I don't have the Prism2 docs, so I was
hoping there was just some magic RID that would do it.

> I should note that in hostap mode that you see all
> beacons for all channels.  I've not looked into why this might be
> (since in debug mode on FreeBSD you see every beacon, even for those
> APs that aren't on the same channel).  Maybe windows just puts the
> card into promiscuous (or hostap) mode for a bit and then waits a few
> hundreds of milliseconds for all the beacons to come in.

I noticed that while playing with the different Linux host AP stuff.
I had presumed that the APs beaconed only on their own channels,
but I guess maybe they'll beacon elsewhere as well?  Or do they somehow
splat the beacon across multiple channels?

In any case, thanks for the pointers.  I'll try to see what I can
figure out!

Kevin
[email protected]
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