On Thu, 2008-03-27 at 20:42 -0400, Richard Marzan wrote: > On Wed, 2008-03-26 at 19:52 -0700, Grant wrote: > > > > > > > I'm trying to strengthen a wireless connection that spans about > > > > 150 > > > > > > > feet and has to go through about 5 walls. I bought two of > > > these: > > > > > > > > > > > > > > http://www.newegg.com/Product/Product.aspx?Item=N82E16833164110 > > > > > > > > > > > > > > for either end of the connection, but I'm having trouble > > > making it > > > > > > > work well. I've noticed the connection will be perfect for a > > > short > > > > > > > time, but then disappear. When watching iwconfig during this > > > process, > > > > > > > it looks like the connection is good when on a low rate, but > > > when it > > > > > > > goes to 54 Mbps it falls apart. > > > > > > > > > > > > > > Should limiting the rate solve this problem? If so, how can I > > > do > > > > > > > that? I'm using hostapd on the AP and wpa_supplicant on the > > > client. > > > > > > > > > > > > > > - Grant > > > > > > > > > > > > Grant, > > > > > > > > > > > > Yes, lowering the rate to a "slower" speed will help greatly. > > > The lower > > > > > > rates use less compression and modulation... less complex wave > > > forms > > > > > > better connects over long hauls. > > > > > > > > > > > > The antennas look very good, but what's driving them? I use and > > > whole > > > > > > heartedly endorse SENAO products and have had very good luck > > > with these > > > > > > models: ECB-3220 (400 mw) or 2611CB3 PLUS (200 mw) at: > > > > > > http://www.wlansolution.com. Either unit with the high gain > > > antennas you > > > > > > have, will penetrate what you stated and probably go pretty > > > high on the > > > > > > speed scale doing it too. > > > > > > > > > > I'm using a Netgear PCI adapter on the AP and an Edimax USB adapter > > > on > > > > > the client. Do you know how I can limit the rate? Should it be > > > done > > > > > on the Gentoo AP or the client? > > > > > > > > > > - Grant > > > > > > > > I use wireless-tools from portage. In it is iwconfig. A simple man > > > iwconfig > > > > will show you what you need. Other thing you could do is configure the > > > > Wireless AP for a fixed rate... works for me. > > > > > > I found this: > > > > > > rate_wlan0=( "5.5M" ) > > > > > > which isn't documented in net.wireless, but it doesn't seem to have > > > any affect. I've tried it on the router and the client which uses > > > wpa_supplicant. I still see the rate on the client fluctuate all the > > > way up to 54 Mb/s in the output from iwconfig. The router's rate is > > > always reported as 0 kb/s. > > > > > > - Grant > > > > It appears 'iwconfig wlan0 rate 11M' works (at least as far as the > > output from iwconfig is concerned) but how can I set /etc/conf.d/net > > to always use this rate? > > > > - Grant > > The best way I found to do this is to just write your own script and run > it at the default runlevel. write a script called wireless-up save it in > your /root directory. Then in /etc/conf.d/local.start add the script > name to the list: /root/wireless-up. Make sure the script is executable > with chmod 666 /root/wireless-up. Here is what mine looks like. I laugh > when I read this thing that I call a script. I'll be upgrading this in > the future but for now maybe someone has a better idea and/or script. > > #!/bin/bash > DATE=`date +%m_%d_%Y` > ifconfig wlan0 up || "echo wlan up failed" > iwconfig wlan0 essid ACCESSPOINTNAME || "echo setting essid failed" > iwconfig wlan0 mode Managed || echo "setting mode to managed failed" > iwconfig wlan0 key restricted YOURKEYHERE || echo "key failed > verification" > dhclient wlan0 || echo "wlan0 failed to receive dhcp request response" > # if [ $DATE -ne `date +%m_%d_%Y -r /tmp/.wireless.* > rm /tmp/.wireless.* > iwconfig >> /tmp/.wireless.$DATE > exit 0 > > >
For custom scrips, you can add a preup, failup or postup-function
to /etc/conf.d/net, there should be examples in the file.
Something like
pastup() {
if [[ ${IFACE} = "wlan0" ]]; then
iwconfig [...]
fi
return 0
}
should work.
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