[Olsr-users] Configuration of an ad-hoc mesh networks

[Charles Lesire-Cabaniols]

Here is my current configuration: both RaspPI have Ubuntu 14.04 LTS with
oonf compiled from git master. They are both connected on eth0 to my office
network (so that I can ssh to them), and I try to connect them together
using wlan0.

On RaspPI 1 :
# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet static
  address 134.212.244.81
  netmask 255.255.0.0
  gateway 134.212.90.100
  dns-nameservers 134.212.90.3 134.212.90.6

# WLAN
auto wlan0
iface wlan0 inet static
  wireless-mode ad-hoc
  wireless-essid MAMBO
  address 169.254.244.81
  netmask 255.255.0.0

On RaspPI 2 : idem with 82 instead of 81 at end of IP addresses

On RaspPI 1:
$ iwconfig wlan0
wlan0     IEEE 802.11bgn  ESSID:"MAMBO"
          Mode:Ad-Hoc  Frequency:2.412 GHz  Cell: BE:F9:B2:61:7E:59
          Tx-Power=20 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
$ ifconfig wlan0
wlan0     Link encap:Ethernet  HWaddr f8:1a:67:23:f7:14
          inet addr:169.254.244.81  Bcast:169.254.255.255  Mask:255.255.0.0
          inet6 addr: fe80::fa1a:67ff:fe23:f714/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1196 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1180 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:480375 (480.3 KB)  TX bytes:499834 (499.8 KB)

On RaspPI 2:
$ iwconfig wlan0
wlan0     IEEE 802.11bgn  ESSID:"MAMBO"
          Mode:Ad-Hoc  Frequency:2.412 GHz  Cell: BE:F9:B2:61:7E:59
          Tx-Power=20 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
$ ifconfig wlan0
wlan0     Link encap:Ethernet  HWaddr a0:f3:c1:2f:dd:ad
          inet addr:169.254.244.82  Bcast:169.254.255.255  Mask:255.255.0.0
          inet6 addr: fe80::a2f3:c1ff:fe2f:ddad/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1241 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1264 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:533113 (533.1 KB)  TX bytes:561624 (561.6 KB)

Both can ping using their 169.254.244.{81,82} addresses.

Then I have launched on both './oslrd2_static wlan0'.

I don't know how to test except using the telnet interface and calling some
OONF functions.
netjsoninfo returns an empty graph...

2015-10-13 10:30 GMT+02:00 Henning Rogge <(spam-protected)>:

> On Tue, Oct 13, 2015 at 10:22 AM, Charles Lesire-Cabaniols
> <(spam-protected)> wrote:
> > Ok, thanks for the answer... but you're talking to a newb, so please be
> more
> > precise ;).
> > Here are my questions:
> >
> > 2015-10-12 19:05 GMT+02:00 Henning Rogge <(spam-protected)>:
> >>
> >> On Mon, Oct 12, 2015 at 1:36 PM, Charles Lesire-Cabaniols
> >> <(spam-protected)> wrote:
> >> > Question: Looks like setting up the IP is not necessary with olsrd2
> >> > (according to the doc), but without I could ping my nodes; what is the
> >> > good
> >> > configuration to set?
> >>
> >> If you want to run your interfaces with linklocal addresses, olsrd2
> >> (in dualstack mode with IPv6) can do this for you.
> >>
> >> BUT you need at least one routable (not linklocal) address on one
> >> interfaced used by olsrd2... in a multi-interface scenario this can be
> >> the loopback interface.
> >
> >
> > And so? I tried to set a static address for my loopback in
> > network/interfaces, but it is not taken into account.
>
> have a look at the "typical OLSR deployments" page of our wiki (its
> linked in the User FAQ)
> http://www.olsr.org/mediawiki/index.php/OLSR_network_deployments
>
> when you want to use the "loopback" to store your routable IP, you
> need to add it to the list of interfaces for olsrd2:
>
> But this doesn't make much sense with a single Wifi interface...
>
> just set the routable address of each node to wlan0 for now and start
> just with "olsrd2_static wlan0".
>
> > And when I launch "olsrd2_static wlan0 lo", nothing specific happens in
> > "route -n"
>
> what is your output of "ip addr" ?
>
> > Ok, I got it... but the netjsoninfo is empty (collectionrs = []) when my
> two
> > nodes look connected
>
> It does not look like your two OLSR instances can see each other.
>
> Do you had a look at the "Troubleshooting" page of our wiki (also
> linked in the User FAQ)?
>
> http://www.olsr.org/mediawiki/index.php/Troubleshooting
>
> Henning
>
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