[B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[Don Davis]

Hello,

I had batman 0.2 + freifunk working.

Each router was  10.0.0.* and had the same wlan address.  Something 
happened and then batman just started silently dying on the gateway 
router 10.0.0.1 (with the address 10.0.2.146 from the router connected 
to the internet).  I erased nvram and reinstalled with separate 10.0.5.* 
addresses for the wlan and that seemed to work (with no http access to 
the routers and ssh via the 10.0.5.* addresses).

I had wanted to stay with batman 0.2 because of the web interface. 
That's no longer practical.  0.3 is the preferred batman, so I should 
use it.  I've taken a look at the docs:
  https://dev.open-mesh.net/svn/batman/trunk/batman/INSTALL

and
"RoutingVoodoo."

assuming a fresh install of freifunk with *no OLSR* running what 
parameters would I want to set:

	adsl
	|	
  	10.0.2.1 [home router ppoe]
	|
	freifunk 1 [gateway]
	does subnet matter?
      	lan 10.0.0.1
	wlan do I want 10.0.0.1 or 10.0.5.1?
	wan via dhcp?
	essid, bssid, channel all the same for ff routers
	myessid, 02:CA:FF:EE:BA:BE, 12, ad-hoc
         what batman parameters will I want to pass?
	shall I create an init script or is there one?  0.2 had the init 	and 
the minutely 'watchout4batman'
		|
		|
		|
	freifunk n non-gateway nodes
	lan 10.0.0.n?
	wlan?
	wan via dhcp?
     	batman -p 10.0.0.1 -r 3 (or 10.0.2.146 freifunk 1's wan address) 
  	eth1 br0 vlan1?


Anything else I should be aware of?  Any other recommendations?  (e.g. 
"Scrap that this is exactly how you do it: 1. 2. 3. "

Re: [B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[Don Davis]

I guess it was a minor mystery that I had 0.2 working.  I've gone 
through and purged the nvram and set wlan with it's own LAN ip.  As long 
as I only run batman on the wireless interface things seem quite smooth 
and easy.

ff1# batmand -g 8 eth1
ff2# batmand eth1

It finds the gateway, there's internet access.  Any suggestions for an 
init script?

In 0.2 I successfully ran batmand br0 and things worked fine.  Trying 
that in 0.3 just locked things up.

Re: [B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[Vinay Menon]

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Hi,

Are you trying to run batman with whiterussian (i am  not sure of freifunk
build)?
if so the init script installed with the batman 0.3 package does not support
nvram. it supports uci (as noticed @
https://dev.openwrt.org/cgi-bin/trac.fcgi/browser/packages/net/batman/files/etc/init.d/batmand)

If your init script is similar to the one in that openwrt link... you can
get stuff working by replacing the uci get variables with valid nvram
variables
like interface=$(uci get batmand.general.interface) to interface=$(nvram get
wireless_interface)  ... i dont remember the variable name correctly.


Regards,
--
Vinay Menon

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Re: [B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[Don Davis]

Vinay Menon wrote:
> Hi,
> 
> Are you trying to run batman with whiterussian (i am  not sure of freifunk
> build)?

Yes, Freifunk is Whiterussian.

> if so the init script installed with the batman 0.3 package does not support
> nvram. it supports uci (as noticed @
> https://dev.openwrt.org/cgi-bin/trac.fcgi/browser/packages/net/batman/files/etc/init.d/batmand)
> 
> If your init script is similar to the one in that openwrt link... you can
> get stuff working by replacing the uci get variables with valid nvram
> variables
> like interface=$(uci get batmand.general.interface) to interface=$(nvram get
> wireless_interface)  ... i dont remember the variable name correctly.

Thank you.  I'll take a look.

Re: [B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[Don Davis]

Does batmand 0.3 automatically identify gateways?

I notice that simply typing
batmand -g 8 eth1 isn't enough to identify a new gateway.  Do I have to 
restart batmand on all the nodes?  or specify batmand -p newgwip -r 3 
eth1 to get them to identify the new gateway?

I thought there was a way to automatically use a gw if another gw was 
down?

Re: [B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[Don Davis]

I don't seem to be really running batman.
batman -c -d 1 shows all the nodes
batman -c -d 2 shows there are no gateways although I had specified one.
Apparently, I'm just running an ad-hoc network that's happens to be 
running batman but not using it.

Sorry for the 36000 posts.

batmand -g 5mb eth1 vlan1 #for gw?
batmand -r 3 eth1 #for nodes?
suggestions?

Sorry again.



Don Davis wrote:
> Does batmand 0.3 automatically identify gateways?
> 
> I notice that simply typing
> batmand -g 8 eth1 isn't enough to identify a new gateway.  Do I have to 
> restart batmand on all the nodes?  or specify batmand -p newgwip -r 3 
> eth1 to get them to identify the new gateway?
> 
> I thought there was a way to automatically use a gw if another gw was down?
> _______________________________________________
> B.A.T.M.A.N mailing list
> B.A.T.M.A.N@open-mesh.net
> https://list.open-mesh.net/mm/listinfo/b.a.t.m.a.n

Re: [B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[Simon Wunderlich]

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On Thu, Jul 17, 2008 at 03:13:17PM -0500, Don Davis wrote:
> batmand -g 5mb eth1 vlan1 #for gw?
Hello Don,

try "-g 5mbit" instead of "-g 5mb". Seems this wrong option is silently
ignored ...

best regards,
	Simon


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Re: [B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[Don Davis]

Simon Wunderlich wrote:
> On Thu, Jul 17, 2008 at 03:13:17PM -0500, Don Davis wrote:
>> batmand -g 5mb eth1 vlan1 #for gw?
> Hello Don,
> 
> try "-g 5mbit" instead of "-g 5mb". Seems this wrong option is silently
> ignored ...
> 
> best regards,
> 	Simon
> 
Thank you.  That did do the trick.

Is the gateway detection for announced gateways?
Is there a script that can probe to see if the router is a gateway and 
if so make it available?

I was under the mistaken impression that because I hadn't configured 
olsr (nor had I disabled it) that I was not running OLSR.  Thanks to 
Sven Ola it seems that it was a zero conf olsr.  Without specifying 
ifconfig eth1:bat 10.0.5.* the batmand eth1  command seemed to work (the 
same for batmand -g 5mbit eth1 vlan1) and batmand -c -d 1/2/3/4 show 
batman running.


Is it normal that I have to kill and restart batman for the new gateway 
to be noticed?

Re: [B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[Simon Wunderlich]

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Hello Don,

Debug Level 2 will list the available gateways. There is no need to
restart BATMAN, it will notice the new gateway available gateways 
automatically (the gateways are announced with the BATMAN-packets). One
of the gateways will be selected depending on the configuration at -r. 

You might want to read the howto [1] for further information. :)
Please ask again if your question is not answered there.

regards,
	Simon

[1] http://open-mesh.net/batman/doc/batmand_howto.pdf

On Thu, Jul 17, 2008 at 05:33:31PM -0500, Don Davis wrote:
> Simon Wunderlich wrote:
> >On Thu, Jul 17, 2008 at 03:13:17PM -0500, Don Davis wrote:
> >>batmand -g 5mb eth1 vlan1 #for gw?
> >Hello Don,
> >
> >try "-g 5mbit" instead of "-g 5mb". Seems this wrong option is silently
> >ignored ...
> >
> >best regards,
> >	Simon
> >
> Thank you.  That did do the trick.
> 
> Is the gateway detection for announced gateways?
> Is there a script that can probe to see if the router is a gateway and 
> if so make it available?
> 
> I was under the mistaken impression that because I hadn't configured 
> olsr (nor had I disabled it) that I was not running OLSR.  Thanks to 
> Sven Ola it seems that it was a zero conf olsr.  Without specifying 
> ifconfig eth1:bat 10.0.5.* the batmand eth1  command seemed to work (the 
> same for batmand -g 5mbit eth1 vlan1) and batmand -c -d 1/2/3/4 show 
> batman running.
> 
> 
> Is it normal that I have to kill and restart batman for the new gateway 
> to be noticed?
> _______________________________________________
> B.A.T.M.A.N mailing list
> B.A.T.M.A.N@open-mesh.net
> https://list.open-mesh.net/mm/listinfo/b.a.t.m.a.n

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Re: [B.A.T.M.A.N.] Batman 0.3 + Freifunk setup questions

[Don Davis]

> Debug Level 2 will list the available gateways. There is no need to
> restart BATMAN, it will notice the new gateway available gateways 
> automatically (the gateways are announced with the BATMAN-packets). One
> of the gateways will be selected depending on the configuration at -r. 

I'm a little curious about setting up an init script for batmand 0.3
Using freifunk + batmand 0.3:

S97startnode.sh
#! /bin/sh
batmand eth1

Works fine for the nodes.  However,
S97startnode.sh
#! /bin/sh
batmand -r 3 eth1

does not find the gateway.  I thought the default routing class was 3 or 
would respond fastest but apparently not.

More of a concern though is writing an init script for a gateway.
S97gateway.sh
#! /bin/sh
batmand -g 5mbit eth1 vlan1


at best has to be killed and restarted for batmand to work; worst case 
scenario it freezes the router.  I need to find a way to get it to wait 
for the dhcp lease before starting (I guess).  Though doesn't the dhcp 
lease come after S99?

What about a script (much like watchout4batman which I haven't seen for 
batman 0.3) that can be run as a cronjob that does two things 1) makes 
sure batmand is up and running 2) if an interface is available on vlan1 
(or whatever the wan port is on) then restart batmand and announce the 
node as a gateway?

For a gateway is there any advantage to
batmand -g 5mbit eth1 vlan1
over
batmand -g 5mbit eth1?