Archive for October 21st, 2009

Sabato 24 Ottobre 2009: Linux Day Roma

Wednesday, October 21st, 2009

Questo sabato, il 24 ottobre, a Roma si tiene il Linux Day :)

Anche quest’anno noi di Ninux partecipiamo con un intervento sulle reti wireless. Il nostro talk dal titolo “Felici e connessi” propone uno scenario di reti wireless aperte, dove tutti condividono la banda che non utilizzano sulla propria linea ADSL. Nello scenario descritto un qualsiasi utente può usare Internet alla velocità del suo abbonamento quando è a casa, ma può anche connettersi “alla meglio” usando le linee ADSL condivise dagli altri quando è in giro per la città. Presenteremo ovviamente come configurare un AP con OpenWRT con un opportuno scheduler in modo da regalare agli altri solo  la banda che non utilizziamo.

L’appuntamento è alla facoltà di Facoltà di Ingegneria della Sapienza, sede di Via Eudossiana n.18 (San Pietro in Vincoli), dalle 10:00 in poi. Il talk di Ninux.org è previsto per le 15:00. Qui il programma completo.

Saverio

locandinalinuxday2009

My Battle of the Mesh 2009 v2 report

Wednesday, October 21st, 2009

Hello World !

this weekend for the first time I partecipated to a Battle of the Mesh, an event organized periodically to test routing protocol implementations for mesh networks.

First of all I have to thank a lot Benjamin Henrion for the great hospitality !! He hosted us the all weekend and we really felt like at home ! :)

There were about 15 people at Okno coming from all across Europe to experiment together for a weekend. Activities were organized with a wiki page, that now contains a lot of useful information.

I went with Claudio. We have been identified as the olsrd team, even if we are not real core developers but we just contributed to the project with a couple of plugins. However, we successfully worked on olsrd, and with the help of Szczepan Jany we found a bug in the current stable version that was fixed right away by the real olsrd developers that were following our progress online.

Foto del 5397525-10-2455121 alle 01:29

Another good thing about the event is that I got much more familiar with the OpenWRT toolchain insights, and with the UCI interface to push settings into the router.

What was really impressive was the big amout of hardware available! We had countless Foneras on our desk and also many other wireless devices !! Nicolas Thill developed a set of scripts to configure in batch multiple devices. The key idea was to compile a firmware with an embedded public ssh key, so that automated scripts could push UCI settings into the devices. To loop between the devices a list of MAC addresses is passed to the script that hacks the ARP cache to jump from one device to another… of course all this is documented on the wiki :)

Wbm

The only thing that was bad to me was the terrible cold I got on Saturday, that made me feel like a zombie for the all day :( I have to say I enjoyed much more Friday and Sunday !! Hopefully Pieter healed me on Saturday night with some “Rum & Honey” Belgian medicine :)

More pictures of the event have been published here.

I hope to see many people present at the Battle of the Mesh very soon in Rome for the Ninux Day ! :)

Saverio