Re: [B.A.T.M.A.N.] DAT issue

[Antonio Quartulli <ordex@autistici.org>]

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On Wed, Aug 07, 2013 at 12:58:32PM +0200, Fernando Pizarro wrote:
> El 07/08/13 11:09, Antonio Quartulli escribió:
> > On Wed, Aug 07, 2013 at 10:58:13AM +0200, Fernando Pizarro wrote:
> >> Hi all!
> >>
> >> I'm playing with OpenWRT and BATMAN advance and I had configured one
> >> essid to serve dynamic vlans via freeradius reply attributes.
> >>
> >> I have a bridge (br0) with bat0, wireless and ethernet interface, and
> >> hostapd creates a new bridge by vlan (brvlanX) with vlanX and wlan1.X
> >> succefully. Br0 has configured a VLAN and IP to connect with every other
> >> nodes. There is the same explanation, but schematic:
> >>
> >> Wireless:
> >>
> >> phy0 -> wlan0 -> bat0
> >> phy1 -> wlan1 -> wlan1.1
> >>                        \ --> wlan1.N
> >>
> >> Hostapd bridge:
> >>
> >> wlan1 -> brvlan1 -> {wlan1.1; vlan1}
> >>         \ --> brvlanN -> {wlan1.N; vlanN}
> >>
> >> Ethernet bridge:
> >>
> >> br0 -> {bat0; eth0; wlan1}
> >>      \ --> br0.X == IP/NETMASK
> >>
> >> When I look at batman dat table there aren't any registry, but variuos
> >> stations are connected. Why is that? What's wrong in my config?
> >
> > Hello Fernando,
> >
> > I have to say that your setup is not the easiest I've ever seen :)
> > However, the initial version of DAT was not made to work with VLANs, but I'm not
> > entirely sure if this should lead to an empty table.
> >
> > First of all, where are all your clients connected? to wlan1?
> > Why did you put wlan1 into br0 and not wlan1.X?
> > When your clients are doing traffic, can you see ARP Req/Resp on wlan1 (which is
> > the interface in br0 that will inject then the data into bat0)?
> >
> > Cheers,
> >
> Hi Antonio, thanks for your answer.
> 
> I explain a bit more my stage... I have a server with DHCP that is the 
> default gateway of all BATMAN nodes and clients, and BATMAN gateways are 
> connected to it fisically. For roamming, I won't have IPs of VLANs in 
> BATMAN nodes and all default gateways of VLANs are configured in the FW.
>

if I understood correctly you have many nodes all connected with a cable to the
same GW? so all the nodes are in the same LAN?

> Clients connects to wlan1.X, but that interface is created by hostapd 
> when radius allows access to the network of that client (default dynamic 
> vlan behaviour). As hostapd creates this interface on demand and 
> destroys it when is killed, I can't add wlan1.X to the bridge (br0). 
> However, there is arp traffic on wlan1.
> 

I guess the traffic you see on wlan1 is VLAN traffic which is going to be
delivered to any of your wlan1.x.

I have the feeling in this way none of the client is really bridged into
batman-adv because you bridged wlan1 but the clients are connected to wlan1.x.
can you please report what "batctl tl" is saying?

Cheers,

-- 
Antonio Quartulli

..each of us alone is worth nothing..
Ernesto "Che" Guevara

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