B.A.T.M.A.N

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11 participants
4293 discussions

[B.A.T.M.A.N.] How does BATMAN work?
by Hendrik 05 Mar '07

05 Mar '07

Hi, I'm currently writing my Masterthesis (Performance of MANET Protocols) and I want to write a little bit about BATMAN. Now I'm running into some Problems, since it's not very well documented :(. I got the informations from https://www.open-mesh.net/batman/ documentation/ and the man-page from last Newsletter and figured some stuff about how to populate the routingtable. But a few points are still missing and I would be happy on getting an answer on them ;oP (Or is there an even better page to find some informations on BATMAN?) 1. From open-mesh Docu: "Originators number their OGMs?, so other nodes can decide whether they receive an originator-sequence-number touple (OGSN) the first time or repeatedly" What's the differens between in OGM and an OGSN? As far as I got to know the protocol, there are just OGM-messages, aren't there?!? 2. Does a Node somehow send back a message (what message?) to the originator of an OGM when ist first gets the message (so that the originator also can populate his Routingtable) or does the originator has to wait for the other nodes to send their OGM? 3. How can a node tell, that a route is broken? Is there some sort of timeout in every entry in the routingtable or what? 4. How does the algorithm for the best neighbor work? (I dont need details here, just what factors are taken for computing) Thanks! Greetz Hendrik

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[B.A.T.M.A.N.] Manpage for batman
by elektra 05 Mar '07

05 Mar '07

Hi - I just received mail from Yury Shevchuk, he has written a nice manpage for batman-0.2. I really like it. There are a few typos and he is considering it as a bug that 0.0.0.0/0 can't be announced via HNA ;-) Have a look at it. cu elektra

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[B.A.T.M.A.N.] licence question
by Yury Shevchuk 01 Mar '07

01 Mar '07

Greetings! Could you please clarify which licence applies to B.A.T.M.A.N? batman.c states it's GPL v2. The site (https://www.open-mesh.net) suggests it's Creative Commons (http://creativecommons.org/licenses/by-nc-sa/2.5/) which forbids commercial use. Why do I ask? We are an ISP in Pereslavl-Zalessky, Russia and look towards converting our little multispot WiFi network into a mesh. Yes we are commercial, but built entirely on free software. May I use B.A.T.M.A.N as a routing protocol? Thanks, -- Yury

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[B.A.T.M.A.N.] Announcement: batman 0.2 alpha released
by Marek Lindner 24 Feb '07

24 Feb '07

Hi, we are happy to announce the first test release of the upcoming batmand. A lot of work has been done under the hood: - many cpu and memory usage optimizations - Big Endian / Little Endian support added - 64 Bit compability added - ability to give access to the various debug levels without restarting the daemon Since a while the *BSD and MacOS X support is unmaintained. Therefore the systems are not supported any longer until a maintainer is found. The 0.2 release will be fully backward compatible to 0.1.1 and above. That enables you to use the stable branch for most of your network and try 0.2 alpha on test machines. Any feedback is highly appreciated. Short explanation how to use the debug levels now: At first start batman normally: batmand <your_options> <interface(s)> Use another shell and type this: batmand -c -d <your_desired_debug_level> The option "c" tells batman to connect to a running batman instead of behaving like a normal batman. You even can connect more than once or different debug level. For debug level 1 and 2 a batch mode was included which prevents redrawing the screen and is ideal for script integration: batmand -c -b -d 1 You can get the sources and precompiled mips / arm binaries from open-mesh.net. Regards, Marek

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[B.A.T.M.A.N.] Announcement: batman 0.1.2 released
by Marek Lindner 21 Feb '07

21 Feb '07

Hi, today we release a bugfix and stability release for the 0.1.x branch. We fixed the following problems: - routing table manipulation bug fixed (some routes towards HNA were not properly set) - crash while using "-p" fixed - several race conditions removed (regarding UDP tunnel setup) As the *BSD and MacOS X is stopped for now the Big Endian / Little Endian support was backported from the 0.2 branch. Special thanks to Lui for providing access to his hostile testing environment and endless patience with us. ;-) You can get the sources and precompiled mips / arm binaries from open-mesh.net. Regards, Marek

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[B.A.T.M.A.N.] BATMAN test at Fosdem
by Benjamin Henrion 20 Feb '07

20 Feb '07

Hi, For those of you who are coming to Fosdem, I am planning a BATMAN test in order to see if the routing protocol chooses the fastest route. Here are the details: Saturday 24 feb @ 12H30 in front of the Chavanne room. I will put more instructions here: http://www.reseaucitoyen.be/wiki/index.php/Batman2chans Best, -- Benjamin Henrion <bhenrion at ffii.org> FFII Brussels - +32-484-566109 - +32-2-4148403

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[B.A.T.M.A.N.] First batman tests
by Benjamin Henrion 16 Feb '07

16 Feb '07

Hi, We met with several people in Brussels active on the reseaucitoyen project to test Batman. Our configuration was 4 laptops like this: laptop1 <----ethernet----> laptop2 + + + + + + wlan1 wlan11 + + + + + + laptop3 <----ethernet----> laptop4 With 8 different IPs for the 8 interfaces. We launched batman-0.10 on all the nodes, but it appeared that one of the interfaces was not reachable via ping. And the experience was reproductible when we restarted the dameon, sometimes with a different IP unreachable. We are going to test the same configuration soon to see if batman chooses the fastest route in terms of throughput. Best, -- Benjamin Henrion <bhenrion at ffii.org> FFII Brussels - +32-484-566109 - +32-2-4148403

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[B.A.T.M.A.N.] Probleme mit Routing bei BATMAN
by Hendrik 09 Feb '07

09 Feb '07

Hallo, ich wollte mal BATMAN ausprobieren und habe hierzu folgendes Netz aufgebaut: A --- B ---- C (stehen alle drei direkt nebeneinander) (IP: 192.168.0. A:3 B:1 C:2) So, bei einer direkten Kommunikation klapp alles ganz toll (und schnell!). Sobald ich aber in A via iptables sage, dass er nichts mehr von der MAC-Adr. von C annehmen soll (und andersherum) - spich so tue als ob die Nodes A und C keine Funkverbindung mehr haben, Klappt das Routing über B nicht. B sagt zwar, dass es A und C kennt/ hört, A kennt aber nur B und C auch nur B (nicht aber den Weg dahinter) Der Debug auf Node A (192.168.0.3) auf Level 3 gab mir folgendes aus: [ 39552] Received BATMAN packet from 192.168.0.1 (originator 192.168.0.2, seqno 162, TTL 49) [ 39552] update_last_hop(): Searching originator entry of last- hop neighbour of received packet [ 39552] new packet - orig: 192.168.0.2, sender: 192.168.0.1 [ 39552] Packet with unidirectional flag [ 39552] purge() [ 39552] ------------------ DEBUG ------------------ [ 39552] Forward list [ 39552] 192.168.0.3 at 40000 [ 39552] Originator list [ 39552] 192.168.0.1, last_aware:39552, last_reply:36003, last_seen:1153 via: [ 39552] ---------------------------------------------- END DEBUG [ 39552] Er bekommt also über B (192.168.0.1) von C (192.168.0.2) eine Message, kann damit aber nichts anfangen. Ich benutze batman-III-0.1-rc1auf einem Debian Sarge System ohne tun. Danke für eure Hilfe Hendrik

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[B.A.T.M.A.N.] -p ... crashes
by Lui 29 Jan '07

29 Jan '07

Hi, i've seen this behavior bevor, but couln't reproduce it until now: If B.A.T.M.A.N.-III v0.1.1 beta2 (compability version 2) is startet with a -p(refered gateway) option and the given gateway is (at least) 2 hops away (may also not/-always/-directly reachable after start), batmand crashes. This happens reproduceble ~30-60sec. after start. Until this point routes are written. No output. No purging of written routes. Tests used: batmand -p <gateway> -r 2 eth1:bat br0:bat With a 1-hop-to-prefered-gateway enviroment batmand seems to have no problems... Regards Lui

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[B.A.T.M.A.N.] Performance
by Michael Oh 27 Jan '07

27 Jan '07

Just curious if there were any performance and scalability info/figures for batman vs olsrd vs roofnet. Running / testing olsrd right now, but running into scalability issues... -- Thanks! Michael Oh

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