Hi, I found a mistake in my configuration: > post-up route add -net 192.168.100.0 netmask 255.255.255.0 dev eth0 should be post-up route add -net 192.168.100.0 netmask 255.255.255.128 dev eth0 But that was not the reason for the problem. The reason was that I have quite a big source of wireless noise that I didn't think of: Mimi Qube 2.4 GHz WiFi Speaker Now with the ALIX on top of the PC I get 12 MBit/sec. But obviously now that I found the source of problem, my wireless works just fine. It only gets to 6MBit/sec, so I will prob keep using the ALIX... Yes I know. Quite silly. Is there a way to make these two wireless devices work together? which two channels create less interference? thanks again, alfonso On Fri, Feb 3, 2012 at 4:16 AM, Alfonso Fiore <alfonso.fiore@xxxxxxxxx> wrote: > Hi Daniel, > > thanks a lot, it worked like a charm! (not true, please read till the end) > > A recap for my memory and for others looking to achieve the same thing > (feel free to correct any mistakes). > > As far as I saw, the PC won't work with DHCP, so manually set an IP in > the right range. > This is my topology: > (ISP wireless router - 192.168.100.254) <---wireless---> (ALIX setup > as bridge) <---wired---> (PC - 192.168.100.100) > > remember to set both the IP and the DNS in the PC. The PC netmask is > not affected by the setup, so keep 255.255.255.0. > > Then on the ALIX, use this /etc/network/interfaces: > > auto lo > iface lo inet loopback > auto eth0 > iface eth0 inet static > address 0.0.0.0 > netmask 255.255.255.255 > auto wlan0 > iface wlan0 inet dhcp > wpa-driver wext > wpa-ssid <<Your_AP_SSID_Here>> > wpa-psk <<cleartext_password>> > wpa-key-mgmt WPA-PSK > wpa-pairwise TKIP > wpa-group CCMP TKIP > wpa-proto RSN > wireless-mode Managed > post-up route del -net 192.168.100.0 netmask 255.255.255.0 > post-up route add -net 192.168.100.128 netmask 255.255.255.128 dev wlan0 > post-up route add -net 192.168.100.0 netmask 255.255.255.0 dev eth0 > > then add to your /etc/rc.local: > > echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp > echo 1 > /proc/sys/net/ipv4/conf/wlan0/proxy_arp > echo 1 > /proc/sys/net/ipv4/ip_forward > > and you are good to go! > > Ok this is just plain silly now. I did all the tests and the PC was > running perfect. Way faster than I expected (12Mbit/sec with > speedtest.net). I rebooted the ALIX to test the config files and it > worked. Then I disconnected and moved the ALIX box close to the PC, > disconnected "half" of the cables between ALIX and the PC (for the > test I was using 2 cables connected with an RJ45 extender) and run the > test again. It's super slow (speedtest.net can't measure it). I > rebooted the PC, the DSL router and the ALIX several times. I moved > again the ALIX near my laptop and I got 4Mbit/sec from the PC (but not > 12Mbit). The router is less than 3 meters away, no walls in between. > During the tests the ALIX was 1 meter from the DSL router. > I also tried to switch off the TV (the only source of electromagnetic > pollution I can think of) but it doesn't change results. > I tried to put the ALIX on the PC case and on a wood table (thinking > about some problem due to the metal PC case). > I feel cursed. > > thanks again, > alfonso > > On Thu, Feb 2, 2012 at 8:29 PM, Daniel Glöckner <daniel-gl@xxxxxxx> wrote: >> Hi Alfonso, >> >> On Thu, Feb 02, 2012 at 07:22:30PM +0100, Alfonso Fiore wrote: >>> Since wireless on my PC doesn't work properly, I'd like to create a >>> wireless bridge to allow a PC to get an IP address from the wireless >>> network without NAT. >>> >>> (ISP wireless router - 192.168.1.1) <---wireless---> (ALIX setup as >>> bridge) <---wired---> (PC - 192.168.1.x) >> >> I use proxy ARP to achieve this with WPA: >> >> route add -net 192.168.1.0/25 dev wlan0 >> route add -net 192.168.1.128/25 dev eth0 >> echo 1 >/proc/sys/net/ipv4/conf/wlan0/proxy_arp >> echo 1 >/proc/sys/net/ipv4/conf/eth0/proxy_arp >> echo 1 >/proc/sys/net/ipv4/ip_forward >> >> But it only works if you know beforehand on which interface your ALIX >> will see an IP address. You could run the DHCP server on your ALIX to >> make it more deterministic. >> >> Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
