setting the bit rate

[David Gibson]

On Fri, Aug 09, 2002 at 03:25:15PM +0800, Stephen Bennett wrote:
> I've noticed even with out a link up iwconfig reports 2M as the connection
> speed (seems to be the default that shows up.)
> Also i've noticed that to change some settings on iwconfig you need to
> ifconfig down the device and then bring it up.
> 
> Possibly try setting the Speed and even if it doesnt say its at 1M or 11M,
> see if you see some speed changes.

Yes - I suspect this may be a reporting problem.  We've also had some
problems here with cards dropping their bitrate because the peer is
not sending ACKs - but we're not sure why it's failing to send ACKs.

> From: "Jones MB" <jonesmb at arthem.com>
> To: <wireless at lists.samba.org>
> Sent: Friday, August 09, 2002 2:37 PM
> Subject: Re: setting the bit rate
> 
> 
> > I have changed the driver from 12b to 11b.  I still have the same
> > problem - bit rate stuck at 2Mbps.  Any idea why?
> >
> > thanks
> > jmb
> >
> > >  > is it recommended practice to manually set the bit rate of a wireless
> > >>  card?  in the startup scripts I have specified "auto" for the bit
> > >>  rate.  when I run iwconfig on the interface, I see that it connects at
> > >>  2Mbps.  when I run "iwconfig eth3 rate 11M" the rate does not change
> from
> > >  > 2Mbps.
> > >>
> > >  > I recently did a kernel upgrade (2.4.7 to 2.4.18).  The driver was
> upgraded
> > >  > from 0.07 to 0.12b.  Before the upgrade I was able to change the
> > >  > speed.  Does the newer version of the driver/kernel prevent rate
> changes
> > >  > with iwconfig?
> > >  >
> > >  > The Linux system has a Lucent silver card with firmware 7.28.  The
> > >  > orinoco_cs driver is 0.12b.  The Linux system talks to an iBook with
> an
> > >>  Airport card.  The iBook is running OS X.  The two systems communicate
> in
> > >>  Ad-hoc mode.  There is no AP.  The PCMCIA stuff is 3.1.22.  WEP is
> off.
> > >>
> > >>  Everything works (albeit slower than I would like it to) and has been
> > >>  working for years.  I am just trying to make it work a little quicker.
> > >
> > >Use 0.11b, not 0.12b.  The 0.12 versions may be considered a failed
> > >experiment...
> > >
> >
> >
> 

-- 
David Gibson			| For every complex problem there is a
david at gibson.dropbear.id.au	| solution which is simple, neat and
				| wrong.
http://www.ozlabs.org/people/dgibson