Re: [B.A.T.M.A.N.] Problem with multi-radio, multi-channel in batman-adv

[Simon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>]

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Hey Puyou,

On Mon, Apr 16, 2012 at 06:35:04PM +0800, puyou.lu wrote:
> Hi guys.
> 　　I’m trying to make a for nodes WMN using four devices with two wireless cards each. I would like to use three different channels to reduce the interference, like this:
> 　　[Node A]  <- channel 1 ->  [Node B]  <- channel 2 ->  [Node C]  <- channel 3 ->  [Node D]
> 　　First I configure eight wireless cards to the specific channel in ad-hoc mode using “iw dev wlan0 ibss join …”.
> 　　Then, I think I should add wlan0 and wlan1 to the same batman-adv interface (that is bat0) in every device. So I need to configure four nodes with the same commands like:
> 　　              echo bat0 > /sys/class/net/wlan0/batman_adv/mesh_iface
> 　　              echo bat0 > /sys/class/net/wlan1/batman_adv/mesh_iface
> 　　Last configure an IP address to each bat0. (Node A-10.0.0.1, Node B-10.0.0.2, Node C-10.0.0.3, Node D-10.0.0.4).
> 　　But it seem Node A can reach Node B and Node C(using ping), but can’t for Node D.
> 　　
> 　　Am I following the right procedure?
> 　　Sorry for my poor English. Any help would be appreciated.

The procedure looks right in general. A few questions to debug:

 * do you use different ESSIDs for the IBSS-networks? ad-hoc devices joining may override the configured channel
   and select another IBSS-network instead when it has the same ESSID.
 * have you confirmed that the WiFi connection works without batman-adv? just set up your WiFi, configure different
   IP addresses and ping for each hop to test.
 * does the output of "batctl originators" helps you? Are the other nodes displayed on node 4?

Cheers,
	Simon

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