Multiple wireless networks

[warlord at MIT.EDU (Derek Atkins)]

I'd recommend reading the past, oh, year+ of the wlan-ng-devel mailing
list archives..  You sort of have to turn on scanning, but what you
need to do sort of depends on your prism2 firmware version.  You may
need to upgrade your firmware.

Once it's scanning it should latch onto the strongest signal, unless
you provide a list of SSIDs in /etc/wlan/wlan.conf in which case it
will look for one of those first and choose the strongest only if it
fails to find one of your standard ones.

Once it chooses the SSID it will look for /etc/wlan/wlancfg-<SSID> and
if that doesn't exist, /etc/wlan/wlancfg-default.

Note that if you go from WEP to non-WEP you need to restart the
drivers via /etc/init.d/wlan stop; /etc/init.d/wlan start.  FWIW, this
all works just fine for me on my RH9 laptop with a built-in mini-PCI
prism2 card.

-derek

Duane Morin <dmorin at lear.morinfamily.com> writes:

> I have wireless setup at home.  I run web and have changed all the 
> defaults (channel, SSID, and so on).  My laptop is configured to work with 
> that just fine.
>
> My local Panera Bread has started doing wifi.  To use it, they tell me, 
> you just bring in the laptop and it just works.  This is going to become
> more of a real problem as valid free wifi hotspots become available to
> me (I"m travelling next week, perhaps the hotel will have one).  
>
> Since I can't seem to make it work, can somebody shed some light on
> the major moving parts that might be causing me trouble? I'm using
> a prism2_usb wireless device with the linux-wlan stuff.  I have
> /etc/sysconfig/network-scripts/ifcfg-wlan0 to consider, but also
> all the stuff in /etc/wlan/* for which I notice there is a wlancfg-XXXX 
> (xxxx being the name of my own SSID at home).  If I have all 
> the proper 'default' values, is the wlan stuff smart enough to scan
> until it finds something it can connect to?  Or is there something
> I have to turn on that says "use whatever you can find?"  It's 
> quite likely that when I first set this up I put in my SSID and
> other info because it seemed logical that would be the only network
> I'd ever want to use.  Well, I wanna change that.
>
> Thanks!
>
> Duane
>
>  
>
>
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-- 
       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
       warlord at MIT.EDU                        PGP key available