HackerSpaceBrussels (HSB) announces the second Wireless Battle Mesh, which aims to test 3 popular WiFi routing protocols (OLSR, Batman and Babel), in Brussels on Saturday and Sunday 17-18 October 2009.
Wireless Mesh Battle: OLSR vs. BATMAN vs. Babel
We setup some IRC meetings to prepare the configuration: IP's, versions, and everything that took too much time at WBM v1. The meetings will be held on the tuesdays of 15 and 22 September and 06 October at 21:00 CET on irc.freenode.net channel #hsbxl. People from Brussels and around are invited to join us at the hackerspace.
The event is free. We'll kindly ask you for a donation to cover some costs.
Space is limited, so we ask you to register in advance by registering:
Tel (ptr_): +32 493 52 50 09
Tel (zoobab): +32 484 56 61 09
Jürgen Neumann, one of the initiators of freifunk.net, and Marek Lindner, openmoko developer and B.A.T.M.A.N. programmer, speak about the Open Hardware Initiative event Open Tech Summit in Taiwan.
The Freifunk Wireless Community Weekend 2008 is over. I had a fantastic time meeting so many people pushing the idea of free networks to new hights. The interest in free wireless was overwhelming and we probably had more than double the number of the 51 visitors who put their names on the participants list. Many developers were taking part. We saw presentations about OpenWRT, B.A.T.M.A.N., the HorstTool, mikroFM, OpenHardware and the Luci-Interface for Freifunk networks. Receiving questions about "free networks and the implications of the law" regularly, we were extremely pleased that Reto Mantz recently published a doctoral thesis about this subject and held a presentation at the WCW (slides now available).
Besides German communities we were very happy to meet many friends from other countries like www.guifi.net from Catalunia, Spain, Sergey Yugov from Russia, Jesper Svarre with 28 people from Denmark and our friends from the Rome community ninux.org.
Together with the help of Italian and German Freifunkers Saverio and me made tons of interviews. Be sure it will not take two years this time to see them online ;-) Get a little taste of the WCW2008 with the first of a series of videos already published by our Italian friends.
Per ora vi lascio con questo breve video, che mostra qualche immagine della domenicale del Wireless Community Weekend. Molto presto verranno pubblicate le interviste. (http://blog.ninux.org/2008/05/05/lultima-sera-al-wcw2008/)
Direct Link: http://www.youtube.com/watch?v=gGZcH49j4hw
As of now we have 48 people who have put their name on the participants list on the wiki at http://wiki.freifunk.net/WCW08:participants and many more who have confirmed their participation to us directly. People are joining us in the upcoming days from Freifunk communities from all over Germany and from communities in other countries. Our friends from Italy will be represented by the two well known free wireless evangelists Nino and Saverio from ninux.org and we expect Jesper Svarre from Denmark with a group of 25 people from the Association of Computer Professionals.
The WCW is a self organized conference and community gathering. We will have a community track with communities presenting themselves, e.g. from Bastian from the Weimar Freifunkers and from Keks from the community in Berlin North-East.
On the other side there will be technical talks from developers of OpenWRT, the B.A.T.M.A.N. routing protocol developers Marek Lindner and Simon Wunderlich; Thomas Hirsch - the developer of the freimap and a presentation of sven-ola - the main developer of the Freifunk Firmware,
Further panels cover subjects like Web 2.0 in the Freifunk Universe (by me, Mario Behling) or Open Networks and the current law by Dr. Reto Mantz, who has recently published a book on "Offene Netze und Recht",
Many opportunities to meet with some of the most exciting people in the international freifunk sphere! Open Mesh advocat Electra will take part in the WCW and after returning from the Open Tech Summit in Taiwan Juergen Neumann will present the latest advancements on Open Wireless Hardware.
Join us at the Freifunki Wireless Community Weekend in Berlin from May 2-4! Check out the latest updates on http://wiki.freifunk.net/Wireless_Community_Weekend_2008
Marek Lindner and Simon Wunderlich from the Berlin freifunk community gave a talk on Wireless Kernel Tweaking and the B.A.T.M.A.N. routing protocol at the 24c3 Chaos Communication Congress. The video is now available on the torrent network.
Kernel hacking definitely is the queen of coding but in order to bring mesh routing that one vital step further we had to conquer this, for us, unchartered territory. Working in the kernel itself is a tough and difficult task to manage, but the results and effectivity to be gained justify the long and hard road to success. We took on the mission to go down that road and the result is B.A.T.M.A.N. advanced which is a kernel land implementation of the B.A.T.M.A.N. mesh routing protocol specifically designed to manage Wireless MANs.
During the last years the number of deployed mesh networks has increased dramatically and their constant growth drove us around the edge of what we thought was possible. To cope with this rapid development we had to leave the slow and limited track of tweaking existing approaches and take an evolutionary step forward by porting the B.A.T.M.A.N. protocol into the kernel land and going down to layer 2. Using B.A.T.M.A.N. advanced as a showcase we will, in our lecture, deliver a detailed review on how one can go about developing linux kernel modules, give insights in what difficulties to expect and provide practical tips on how to go about this challenge without experiencing a damaging kernel freeze in due process.
We will describe what problems we faced migrating down to layer 2 and how we went about solving them for example how we moved away from the kernel routing and handle the actual routing and data transport in B.A.T.M.A.N. itself. Also moving to layer 2 meant to leave IPs behind and solely rely on MAC-routing enabling features like DHCP, IPX, IPv6, etc which up to now was not possible and therefore comes as a big plus. On the other hand there were little if none diagnostic tools at all for routing on that level so we had to go back one step and develop the tools we needed ourselves.
These and other things we will cover in our presentation and also give an outlook into the future of mesh-routing, which will bring it even closer to the source of wifi - the wireless stack and its drivers and thereby improving the overall performance even more.
Der Kongress dauert bis zum 30. Dezember. Die Freifunk-Community trifft sich hier unter anderem in der Embedded Corner auf der Ebene C im ersten Stock neben der Treppe. Im Wiki haben sich bereits Freifunker aus Bern, Hamburg, Leipzig, Rostock sowie der Berliner Initiativen aus der City, vom Kiezfunk und aus Berlin Nordost angekündigt. Themen werden die aktuelle Firmware, die Erfahrungen mit dem neuen Routingprotokoll B.A.T.M.A.N. und die Idee der Open Hardware Prism sein.
Wir freuen uns auch auf interessante Zusammentreffen mit "wireless groups from all over", Gnu Radio, Decentral applications/protocols, Openembedded, Opemmoko, Settopfoo und vielen anderen.
Just wurde nach langem Werkeln in Leipzig eine neue stable Firmware (1.6.10-a) veröffentlicht. Im Leipziger Mesh kann diese über die automatische Updatefunktion (ab 1.4.5) per Klick geladen werden, im www unter http://firmware.leipzig.freifunk.net In dieser Firmware wird erstmalig batmand konsequent als "Zweitmesh" eingesetzt. Batman selbst trifft (noch) keine Routing-Entscheidungen, die Tunnel zu Gateways sind abgeschaltet, damit der OLSR-Betrieb nicht gestört wird. Es wird fleissig beobachtet und debugged. Designtechnisch kommt die FW im schwarzen Look der cccamp07-Firmware daher. Ausserdem: Update-Warnung auch für einzelne Pakete, neuer Statistik-Feel und viele Kleinigkeiten. Thanx to Tetzlav und Jo.
Schon in Chaosradio Express 016 hat Elektra einen tiefen Einblick in Wesen und Form des Mesh Networking geboten. Im Gespräch mit Tim Pritlove werden nun die neuesten Erkenntnisse der Entwicklung berichtet. Kern der Neuigkeiten ist der Nachfolger des OLSR-Protokolls namens B.A.T.M.A.N. Elektra erläutert, wie B.A.T.M.A.N. im Deatil funktioniert, welche Erfahrungen und Erkenntnisse seinem Design zu Grunde liegen und wie man sich das alles vorstellen muss. Ein Teil der Diskussion betrifft auch die geplante Mesh Networking Technologie im OLPC (XO) Laptop. (20.9.2007, http://chaosradio.ccc.de/cre045.html)