Re: forcing 802.11a association

[Derek Atkins <warlord MIT EDU>]

Dan Williams <dcbw redhat com> writes:

> On Sun, 2007-06-24 at 18:21 +0200, Mathieu GELI wrote:
>> Hi list,
>> 
>> I'm wondering wheter it is possible to force association on the 5Ghz band
>> when a hostpot provides both 2.4 & 5 even if on 2.4 the driver reports
>> a quality a little bit bigger.
>
> Not with 0.6.x, unfortunately.  0.7 will allow you to specify a
> particular band for a specific Connection.
>
>> I doubt NM does even see the 5Ghz channels.
>> The card is an Intel PRO Wireless 3945ABG
>
> It will see the channels, but if you have the same SSID on both bands,
> it's completely up to wpa_supplicant and the driver itself what band it
> decides to use for the association, since NM doesn't pass the channel.
> I'd guess that the card just reports scan results for the b/g band
> first, and therefore that's the BSSID that wpa_supplicant picks.
>
> Dan

I've noticed that the iwl3945 driver doesn't even report the (a) band
results when the BSSID is the same on both (a) and (b/g).

-derek
-- 
       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
       Member, MIT Student Information Processing Board  (SIPB)
       URL: http://web.mit.edu/warlord/    PP-ASEL-IA     N1NWH
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