[B.A.T.M.A.N.] Stable adapters for Ad Hoc networks

Simon Wunderlich simon.wunderlich at s2003.tu-chemnitz.de
Wed Feb 4 20:56:12 UTC 2009


Hey Breno,

sounds like the well known ad-hoc cell splitting problem to me. A common
workaround is to fixate the BSSID to some pre-defined value:

iwconfig athX ap 02:CA:FF:EE:BA:BE

hopefully all your drivers support this. :)

best regards,
	Simon

On Wed, Feb 04, 2009 at 03:03:35PM -0300, Breno Jacinto wrote:
> Hello everyone,
> 
>   I`m running several experiments involving ad hoc networks. I`ve
> selected some well known-to-be-compatible adapters, such as Edimax
> (Ralink shipset), Alfa networks (Realtek) and Atheros (madwifi).
> Atheros is available only as built-in adapter on the equipement or as
> a  PCI board.
> 
>   So, I'm experiencing some instability regarding the selection of
> the BSSID used by all the nodes. I start the network with a single
> node, then another, then another. Now, for a couple of minutes it
> works, bu then some nodes start losing sight of each and changing
> their BSSIDs to a different value (and they should always use the
> same). I'm really running out of
> explanations of why this is happening, because these nodes are all
> in-range of each other, and should be "pingable" directly. My main
> suspect is the driver instability, but then I dont know of any other
> better alternatives. I've tested the following USB adapters:
> 
> - Edimax EW-7318USg (rt73 drivers)
> - Alfa AWUS036H-11g
> 
>   And the builtin adapters:
> 
> - Atheros chipset AR5007EG
> 
> 
> best regards,
> 
> -- 
> -- 
> :: Breno Jacinto ::
> :: breno - at - gprt.ufpe.br ::
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