open 80211s on XO 1.5

Tomeu Vizoso tomeu at
Mon Nov 2 12:50:57 EST 2009

On Mon, Nov 2, 2009 at 17:40, Martin Langhoff <martin.langhoff at> wrote:
> On Fri, Oct 30, 2009 at 8:50 PM, Ed McNierney <ed at> wrote:
>> Under a tree, using mesh networking is pointless (unless, I suppose,
>> it is an extraordinarily large tree).  Mesh networking allows packet
> You guys are both right. At the SF meetings, if you have a bunch of
> XOs + an Active Antenna, you are using a combination of
>  - 802.11s
>  - Telepathy-based collaboration, using either Gabble (via ejabberd)
> or Salut (without XS)

Also, I think using salut is much worst in the mesh case than gabble?



> Now, in a small place, all machines can "hear" eachother's signals, so
> while you are using 802.11s, you are not enjoying any of its benefits.
> (And given what we know about 802.11s, you probably have less
> bandwidth to use, just because you are using 802.11s. Or, to put it
> another way, you'll have a saturated wifi with a small number of XOs,
> where 802.11g can handle more XOs.)
> Taking advantage of 802.11s not "hard", but it doesn't happen often.
> You just have to have a few XOs far enough from the AA that they need
> to do routing. It works. (Of course, it doesn't work if you've
> saturated the spectrum.)
> Our XO-1s using 8.2.1 never actually use ad hoc. The driver reports it
> as such, but it's not ad hoc. Now, if you are all close enough, it's
> almost the same as using ad hoc mode.
> m
> --
>  martin.langhoff at
>  martin at -- School Server Architect
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