hi... Just try to implement mesh network by using raspberry and my usb wifi dongle is edimax ew 7811un with realtek rtl8192cu. But I still cannot ping each other,,,, refer to explanation that you ever use rtl7811cu, could you help me what the problem so I cannot ping each othe. I have been setting all node with same ssid and channel but still cannot connect,,,,
> I had evaluated babel, OLSR, and Batman-adv two years ago on a test > network of 5 beaglebones to demonstrate wifi mesh networking. I concluded > Batman-adv was the one to explore further. I was using Robert Nelson's > ubuntu (3.2 kernel) on beaglebone white then. I had tried three different > long range wifi dongles from Alpha. The black one (http://www.amazon.com/ > <http://www.google.com/url?q=http%3A%2F%2Fwww.amazon.com%2F&sa=D&sntz=1&usg=AFQjCNGkySYJXESqWaOStFafwhHok8t7EQ> > Alfa-AWUS036NHA-Wireless-Adaptor-Compatible/dp/B004Y6MIXS) has Atheros > ar9271 chipset and has the best kernel support on Beaglebone. The more > common model is based on realtek rtl8192cu chipset. Back then rtl8192cu > driver on arm was not anywhere near ready. I would still strongly prefer > AR9271 based wifi dongle today. I had to use a USB Y-cable to make sure > there is sufficient current during boot time to power up the wifi dongle. > BB only has a USB host port, so this was a bit inconvenient. I resorted > to tie the 5V and GND lines of the USB to a 5V supply to ensure smooth > boot. > > With a 14" omnidirectional antenna and tx-power cranked up full, I was > able to sustain decent connectivity at ~300 meter per hop during field > demonstration. > > For batman-adv, I configured every node's bat0 interface on 192.168.50.x > subnet. (wlan0 has its own static address assignment in > /etc/network/interfaces) > > When starting a mesh node, a startbatman.sh is called that has the > following: > modprobe batman-adv > ifconfig wlan0 mtu 1528 > batctl if add wlan0 > ifconfig bat0 192.168.50.218 up > batctl gw client > ip route del default > ip route add default via 192.168.50.1 > > On the node serving as gateway through its eth0, I had the additional > lines for Network Address Translation. > sysctl net.ipv4.ip_forward=1 > iptables --table nat --append POSTROUTING --out-interface eth0 -j > MASQUERADE > iptables --append FORWARD --in-interface bat0 -j ACCEPT > > You could add an @reboot line in /etc/crontab that calls your startbatman.sh > on reboot every time. > > I have not updated this since the switch to 3.8 kernel, but I am pretty > sure it would work on the current Debian image. I would recommend you use > the 3.14 kernel to benefit from the more reliable USB. > > George > > On Fri, Sep 26, 2014 at 2:30 PM, Brian Anderson <[email protected] > <javascript:>> wrote: > >> Hi all, >> >> I am interested in setting up a wireless mesh network using a collection >> of BBBs (and possibly other devices). Does anyone have experience setting >> up a wireless mesh network using BBB? >> >> I am not really interested in a so-called "wireless distribution system" >> that is used to extend an SSID across a wide area using wireless mesh >> networking. I am much more interested in setting up a network of >> cooperating nodes that talk with each other (and to the internet via a >> gateway/mesh portal connected simultaneously to the internet and the mesh). >> >> In particular, I'm interested in: >> >> * What distro and kernel are you using? >> * Ideally this would be with one of RCNs Debian images, but if not, >> I'm interested in what you might have used. >> * If you have done something with a Linux based system other than a >> BBB, I'd like to know about that too. >> * What mesh routing protocol was used? Batman, Babel/AHCP, HWMP, OLSR, >> ... >> * Steps to configure the mesh network and gateway. >> * Did you use 802.11s? If so, presumably using the 802.11s support in >> the kernel? >> * WiFi chipset that was used (presumably supporting mesh mode). >> SOFTMAC or HARDMAC? >> >> I have researched the topic fairly extensively and can probably set >> something up via trial and error myself. Prior to diving into that, I >> wanted to see if anyone has already done some work with wireless mesh >> networking and BBB (or something else) and would be willing to share their >> experience and knowledge! >> >> Thanks in advance. >> >> Cheers, >> >> ba >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the Google Groups >> "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> For more options, visit https://groups.google.com/d/optout. >> > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
