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[<bogus@does.not.exist.com>]

Like you said, it is low because both interfaces share the medium but if I don??t change the rate using iwconfig, this values or at least the first one goes down until 1,5 MBits. That??s way I wonder if there is something that keeps the rate low by the time a virtual interface is created. 

Thanks for your response

Best regards

Lorna 


-------- Original-Nachricht --------
> Datum: Thu, 11 Nov 2010 09:00:45 -0800
> Von: Ben Greear <greearb@candelatech.com>
> An: "Lorna Gonz??lez" <lorna.glez@gmx.net>
> CC: Jouni Malinen <jouni.malinen@atheros.com>, ath9k-devel at venema.h4ckr.net
> Betreff: Re: [ath9k-devel] ath9k: Virtual interface as AP

> On 11/11/2010 07:06 AM, "Lorna Gonz??lez" wrote:
> >
> > Hello
> >
> > I finally got a station an a virtual AP working on the same channel
> using the setup below. I made some test sending TCP through iperf between the
> AP and the station and the VAP to a station associated with it.
> > Using an AP operating with Ieee802.11n, an atheros AR928X and without
> virtual interfaces I get a max throughput of 50 MBits/s.
> > As soon as I start using my desired setup, the thoughput of the station
> is about 15 MBits/s... I actually need to make the rate fixed using
> iwconfig to get this max. Otherwise the traffic is sent at 1 MBit/s.
> >
> > Can someone please tell me how is the behaviour of the rate control in
> case of virtual interfaces on mac80211?
> 
> Can you give a more detailed description/diagram of your virtual AP setup
> and
> network throughput test?  It sounds like you are using the same radio as
> AP
> and STA?  If so, then of course you are going to get less bandwidth on the
> VIFS because they have to share the radio.
> 
> I'm not sure it should drop all the way to 15Mbps, though.  We haven't
> done a lot of throughput
> testing yet, but if we use two STA vifs on the ath9k box connected to an
> 80211n AP (trendnet),
> then we can set a max of about 9Mbps tx + rx across each STA (the STAs are
> sending to each other).
> That is around 40Mbps total tx + rx across the radio.
> 
> Thanks,
> Ben
> 
> -- 
> Ben Greear <greearb@candelatech.com>
> Candela Technologies Inc  http://www.candelatech.com
> 

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