[Nottingham] Wireless networking

Lee nottingham at mailman.lug.org.uk
Sun Sep 1 16:39:01 2002

hmm, whats the output from iwconfig? any errors, lost frames?

any weird kernel problem's showing in dmesg?

any hardware conflicts at the interrupt level (cat /proc/interrupts)

have you try using a different channel, you may be getting interference
from near by taxi firms ;-)...

Might be a vendor interoperablity problem, make sure there both working
in true 802.11b mode.

if the 11/mb cards, you should at *best* see around 5/mbs a second..at
best... more likey 2/mbs a second, (that's around 200k per second).

have you tried any but ftp, perhaps a large http transfer?

the stats from iwconfig and ifconfig might tell us more.

'Will fix linux for beer'

On Fri, 2002-08-30 at 21:05, Martin Garton wrote:
> Hi,
> I've been playing around with a couple wireless network cards in two of 
> my machines, and I'm looking for advice/help from anyone who has 
> done similar.
> Both cards are prismII based. One is an "IBM High-rate Wireless LAN PC 
> Card 128" and the other is an "SMC EZ Connect Wireless (SMC2632W)"
> I have the IBM card in a desktop machine (via a pcmcia <-> isa bridge)  
> and the other in my laptop. I have both interfaces up and iwconfig parms
> set correctly I believe. They are both operating in "proper" ad-hoc mode
> and can talk to each other okay. eg, I can ssh from one machine to the
> other. So far so good.  However, during file transfer such as ftp, I only
> get about 10kB/s and I expected much more.
> Both cards are using orinico_cs.o currently. I have tried wvlan_cs with 
> similar results.
> Does this kind of throughput sound much too low? I expected something 
> approaching 1MB/s
> Regards,
> Martin.
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