Re: wlan interface (was: first play with new XO 1.5 machines)

2009-10-30 Thread Albert Cahalan
On Fri, Oct 30, 2009 at 8:45 PM, John Gilmore wrote: >> I talked with one of the 802.11 experts I know. He's quite sure >> that there should be no problem on Atheros hardware at least. >> He has no problem transmitting arbitrary packets at arbitrary >> times and no problem receiving packets eithe

Re: wlan interface (was: first play with new XO 1.5 machines)

2009-10-30 Thread John Gilmore
> > I mean the clock in the 802.11 MAC sublayer. This defines the basis of > > the timing synchronization function (TSF) which is a core part of > > 802.11. Without synchronized clocks, nodes cannot communicate. > > I talked with one of the 802.11 experts I know. He's quite sure > that there shoul

Re: wlan interface (was: first play with new XO 1.5 machines)

2009-10-29 Thread Albert Cahalan
On Thu, Oct 29, 2009 at 12:17 PM, Daniel Drake wrote: > 2009/10/26 Albert Cahalan : >>> The issue is that A and B are both hosting their own networks, they >>> are both beacon masters, spewing beacons based off their own clocks. >> >> How is this any different than the mesh situation? > > Exactly

Re: wlan interface (was: first play with new XO 1.5 machines)

2009-10-29 Thread Daniel Drake
2009/10/26 Albert Cahalan : >> The issue is that A and B are both hosting their own networks, they >> are both beacon masters, spewing beacons based off their own clocks. > > How is this any different than the mesh situation? Exactly how the XO-1 mesh functions on this level is frustratingly unkno

Re: wlan interface (was: first play with new XO 1.5 machines)

2009-10-25 Thread Albert Cahalan
On Fri, Oct 23, 2009 at 7:09 AM, Daniel Drake wrote: > 2009/10/23 Albert Cahalan : >> Thus, properly done, the XO labled "C" might have either of: >> >> a. wlan0 to reach A, and wlan1 to reach B (same hardware) >> b. wlan0, from which wlan0_0 and wlan0_1 are instantiated > > It can't do this, unl

Re: wlan interface (was: first play with new XO 1.5 machines)

2009-10-23 Thread Andrés Ambrois
On Friday 23 October 2009 09:09:31 am Daniel Drake wrote: > 2009/10/23 Albert Cahalan : > > Thus, properly done, the XO labled "C" might have either of: > > > > a. wlan0 to reach A, and wlan1 to reach B (same hardware) > > b. wlan0, from which wlan0_0 and wlan0_1 are instantiated > > It can't do t

Re: wlan interface (was: first play with new XO 1.5 machines)

2009-10-23 Thread James Cameron
On Fri, Oct 23, 2009 at 04:54:31PM +0545, Daniel Drake wrote: > C can either talk with A, by finding the beacons, adjusting its own > clock to match. (at this point, any frames coming from B will be heard > as noise) > or it can adjust to B's clock, in order to speak to it (and everyone > else who'

Re: wlan interface (was: first play with new XO 1.5 machines)

2009-10-23 Thread Daniel Drake
2009/10/23 Albert Cahalan : > Thus, properly done, the XO labled "C" might have either of: > > a. wlan0 to reach A, and wlan1 to reach B (same hardware) > b. wlan0, from which wlan0_0 and wlan0_1 are instantiated It can't do this, unless it has 2 independent clocks in the wifi hardware. I do not k

wlan interface (was: first play with new XO 1.5 machines)

2009-10-23 Thread Albert Cahalan
Daniel Drake writes: > Another laptop "C" comes along > A <> C <--> B > This laptop can see both of these independent laptops (each having > its independent network). It can join one or the other. It cannot > join both. Hence this XO can only communicate with A or B, but not > both