[B.A.T.M.A.N.] Fwd: Batman-adv simple configuration example - B.A.T.M.A.N - lists.open-mesh.org

10 May 2012


      Hello again!
First of all thank's Sven Eckelmann and Guido Iribarren for your  
replies and for the attention in my issue.
I would like to say that i already found the solution, as you can see below.
I couldn't split the radios on the wireless network, because i'm using  
only chips broadcom (and it isn't possible to have more than 1 radio  
interface). When i said that i only need a simple two router network,  
doesn't mean that i only going to use 2 routers... the gold is to use  
many of them in a mesh network, but i needed to start with a simple 2  
mesh configuration router configuration.
After some configuration, it worked correctly in ad-hoc mode... and to  
the clients access the mesh through wireless i´m going to use another  
router linked by cable (ethernet) using lan ports, with dd-wrt  
firmware (or something like that) as a AP -access point (only used to  
forward the signal to wireless). By cable it isn't necessary an access  
point, only plug the cable in batman-adv node.
I'm using backfire (openwrt build):
cat /home/pedro/backfire/feeds/packages/net/batman-adv/Makefile | grep 2012
# Copyright (C) 2010-2012 OpenWrt.org
PKG_VERSION:=2012.0.0
BATCTL_VERSION:=2012.0.0
The batman-adv-devel version didn't work...:
In the:https://dev.openwrt.org/wiki/GetSource
downloaded: svn co svn://svn.openwrt.org/openwrt/trunk/
with this feed in feeds.conf.default:
src-svn batman http://downloads.open-mesh.org/svn/openwrt-feed/
(i know this is a issue related with openwrt, but i must explain how i did)
this is the version of the batman-adv-devel:
cat /home/pedro/trunk/feeds/packages/net/batman-adv/Makefile | grep 2012
PKG_VERSION:=2012.1.0
BATCTL_VERSION:=2012.1.0
root@OpenWrt:~# batctl -v
batctl 54b7d54 [batman-adv: master-b0f3829]
the error was using the same configurations file (below) that worked  
with batman-adv backfire stable release:
root@OpenWrt:/lib/batman-adv# batman-adv start
/usr/sbin/batman-adv: eval: line 1: can't  
create/sys/class/net/bat0/mesh/orig_interval: nonexistent directory
/usr/sbin/batman-adv: eval: line 1: can't create
/sys/class/net/bat0/mesh/log_level: nonexistent directory
/usr/sbin/batman-adv: eval: line 1: can't create  
/sys/class/net/bat0/mesh/bonding: nonexistent  
directory/usr/sbin/batman-adv: eval: line 1: can't create  
/sys/class/net/bat0/mesh/fragmentation: nonexistent directory
/usr/sbin/batman-adv: eval: line 1: can't create  
/sys/class/net/bat0/mesh/gw_bandwidth: nonexistent directory
/usr/sbin/batman-adv: eval: line 1: can't create  
/sys/class/net/bat0/mesh/gw_mode: nonexistent  
directory/usr/sbin/batman-adv: eval: line 1: can't create  
/sys/class/net/bat0/mesh/vis_mode: nonexistent directory
/usr/sbin/batman-adv: eval: line 1: can't create  
/sys/class/net/bat0/mesh/ap_isolation: nonexistent directory
I tryed to analyze if the problem was with the  "crc16" lib in the  
configuration files, but it wasn't... the configuration files were  
like the backfire stable release...
pedro@rodrigues:~/trunk/feeds/packages/net/batman-adv/files/lib/batman-adv$ vi  
config.sh 
#!/bin/sh
bat_load_module(){
        [ -d "/sys/module/batman_adv/" ] && return
. /etc/functions.sh 
         load_modules /etc/modules.d/*-crc16 /etc/modules.d/*-batman-adv*}
etc..........
This is a issue to analyze...
Going back to the stable release that worked fine:
this is the server file of batman-adv configuration(with # comment is  
the client version modifications):
root@OpenWrt:/etc/config# vi batman-adv
config 'mesh' 'bat0'       
      option 'interfaces' 'wifi'
      option 'aggregated_ogms' '1'
      option 'ap_isolation' '0'
      option 'bonding' '0' 
      option 'fragmentation' '1'
      option 'gw_bandwidth' '5mbit/1024kbit' #comented line in client  
mode                option 'gw_mode' 'server'              #'client'   
      #option 'gw_sel_class'      #option 'gw_sel_class' '2' 
      option 'log_level' 'all'
      option 'orig_interval' '1000'
      option 'vis_mode' 'server'             #option 'vis_mode' 'client'
------------------------------------
this is the dhcp configuration:
root@OpenWrt:/etc/config# vi dhcp
config dnsmasq
        option domainneeded     1
        option boguspriv        1
        option filterwin2k      0  # enable for dial on demand
        option localise_queries 1
        option rebind_protection 1  # disable if upstream must serve  
RFC1918 addresses
        option rebind_localhost 1  # enable for RBL checking and  
similar services          #list rebind_domain example.lan  # whitelist  
RFC1918 responses for domains
         option local    '/lan/'
        option domain   'lan'
        option expandhosts      1
        option nonegcache       0
        option authoritative    1
        option readethers       1
        option leasefile        '/tmp/dhcp.leases'
        option resolvfile       '/tmp/resolv.conf.auto'
        #list server            '/mycompany.local/1.2.3.4'
        #option nonwildcard     1
        #list interface         br-lan
        #list notinterface      lo
        #list bogusnxdomain     '64.94.110.11'
config dhcp lan
        option interface        lan
        option start    51
        option limit    70
        #option leasetime       12h
    option force	1   #this line is only for server router, the            
                   #one who is going to distribute the IP's to the  
clients
config dhcp wan
        option interface        wan
        option ignore   1
____________________________________
this is the network file configuration:
root@OpenWrt:/etc/config# vi network
#### VLAN configurationconfig switch eth0
        option enable   1
config switch_vlan eth0 0
        option device   "eth0"
        option vlan     0
        option ports    "1 2 3 4 5"
config switch_vlan eth0_1
        option device   "eth0"
        option vlan     1
        option ports    "0 5"
#### Loopback configuration
config interface loopback
        option ifname   "lo"
        option proto    static
        option ipaddr   127.0.0.1
        option netmask  255.0.0.0
#### LAN configuration
config interface lan
        option type     bridge
        option ifname   "eth0.0 bat0 wlan0"
        option proto    static
        option ipaddr   10.3.1.1                #10.3.1.X for other routers
        option netmask  255.255.255.0
        option broadcast 10.3.1.255
        option mtu      1500
#### WLAN configuration
config interface        wifi
        option proto    none
        option ifname   "wlan0"
        #option ipaddr   10.1.1.1        #option netmask  255.255.255.0
        option mtu      1528
#### WAN configuration
config interface        wan
        option ifname   "eth0.1"
        option proto    dhcp
________________________________-
this is the wireless file configuration:
root@OpenWrt:/etc/config# vi wireless
config wifi-device  radio0
        option type     mac80211
        option channel  6
        option phy      phy0
        option hwmode   11g
        option country  PT
        option txpower  20
        option disabled 0
config wifi-iface
        option device   radio0
        option network  wifi
        option mode     adhoc
        option ssid     PR
        option bssid XX:XX:XX:XX:XX:XX   #the bssid must be the same  
in all routers
        option encryption none
______________________________________-
all these configuration files are located in "/etc/config".
As you can see the mesh interface is the wireless "wifi":
the bat0 interface it appears only in the lan bridge;
and it worked fine.
root@OpenWrt:/etc/config# batctl if
wlan0: active
root@OpenWrt:/etc/config# batctl o
 [B.A.T.M.A.N. adv 2012.0.0, MainIF/MAC: wlan0/00:13:10:7c:da:73  
(bat0)]  Originator      last-seen (#/255)           Nexthop  
[outgoingIF]:   Potential nexthops ...00:06:25:00:63:7b    0.228s    
(246) 00:06:25:00:63:7b [     wlan0]: 00:06:25:00:63:7b (246)
root@OpenWrt:/etc/config# batctl vd dot
digraph {
    "00:13:10:7c:da:73" -> "00:06:25:00:63:7b" [label="1.000"]
    "00:13:10:7c:da:73" -> "76:0f:22:e4:5f:d8" [label="TT"]
    subgraph "cluster_00:13:10:7c:da:73" {
    	"00:13:10:7c:da:73" [peripheries=2]
    }
    "00:06:25:00:63:7b" -> "00:13:10:7c:da:73" [label="1.214"]
    "00:06:25:00:63:7b" -> "56:71:dc:31:13:2c" [label="TT"]
    subgraph "cluster_00:06:25:00:63:7b" {
    	"00:06:25:00:63:7b" [peripheries=2]
    }
}
using the xdot ubuntu application it made the figure (.png) that  
shows the batman-adv mesh picture.
The only thing that didn't start with the boot of the routers was the:
-option 'gw_bandwidth' '5mbit/1024kbit'
-option 'gw_mode' 'server'
-option 'vis_mode' 'server'
it was necessary to start manually... the rest worked weel in the  
boot.Just one thing before i forget... the router "server" must be the  
first one to start (switch on)... we must wait until it finish the  
boot and then we can start the client router...
(the problem is probably the definition who is the master -IP  
distribution and so on...)(i used the "option force 1 in the dhcp  
configuration file, but didn't worked...) if we start the client first  
it will not be possible to access the internet, supposed the ISP is  
connected with the "server" router... the ad-hoc mode and the mesh  
network works the same way (works fine)...
is a issue to study (yes i know that is a openwrt problem, and there  
are a bunch of openwrt problems here).My gold is to contribute with  
something here, and to get my job done as well.
For now i stay here, and thank you for your lights and publications,  
they helped me a lot!!
Best regards,Pedro Rodrigues - Portugal