> I am using the same hardware, and I have observed that the interface > goes up and down spontaneously from time to time, probably because of > USB rather than network issues. It might help to check that you have > one of the latest Raspberry Pi (better usb design) and that your power > supply is sufficient. > [...] > Gabriel
The Raspberry Pi does seem to have soem USB limitations which have been affecting the stability of the wireless network. It took some work to get the networking services to come up in a predictable manner, especially with netcfg which is why I abandoned it in place of manual systemd services. I have 40 of the Pi's, 10 of the first version and 30 more recent. I had issues early on which highlighted the importance of the power supply when using the Raspberry Pi as an experimental platform. For these recent tests some were still sharing power supplies which isn't ideal, but is adequate. The USB wlan adapter was the only attached peripherial for these tests. > I'm no wifi specialist, but I found this to be a very interresting talk: > https://www.usenix.org/conference/lisa12/building-wireless-network-high- density-users > There might be some useful tips in there ? Thank you for the link, it does have some useful information. I have been keeping an eye out for technical papers relating to event/conference Wi-Fi network design for tips on this project. >> [Service] >> ExecStart=/usr/bin/babeld -D > I'm certainly no systemd specialist, but should this either say Type=forking, or not use the -D flag? Yes, I should have been using the Type=forking and passing the PID file to systemd. I was originally calling babel without the -D flag, but changed the ExecStart line in this service file (and altered the mesh.service file) due to sequencing issues with initialising the USB adapter and corresponding wlan0 interface before babel was started. I had issues with babel if it was called before the wlan0 interface existed, though this may have again been a configuration error on my part. Regards, Jason _______________________________________________ Babel-users mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/babel-users
