Archivierte Version vom NOC-Pad 2016
(kopiert von https://pads.hackerspace-bremen.de/p/ffhb-breminale-2016-noc)
http://c541678.r78.cf2.rackcdn.com/appnotes/bpg-highdensity.pdf
Traditional networks can only solve this problem by trying to be on a different non-overlapping channel. But since there are only 3 in the 2.4 GHz band, this is not realistic. A better solution is to make use of the other channels. These channels do overlap with traditional plans but have a huge benefit: clients that are on these channels do not hear stations on channels 1, 6 or 11. A client on channel 7 does not need to pay attention to a neighboring network transmitting on channels 6 or 11. It freely ignores these irrelevant preambles.
OFDM only in the 2.4 GHz band (drop support for 802.11b clients) • Disable background scanning by APs • Enable RTS-CTS to mitigate collisions • Limit the number of SSIDs as much as possible to reduce management traffic and overhead • Disable any service that may potentially deny service such as WIPS
broadcast + multicast filter
https://github.com/freifunk-gluon/gluon/tree/master/package/gluon-ebtables-filter-multicast/files/lib/gluon/ebtables anpassen für unser netz ( traffic geht nicht auf bat0 raus )
neues modul bauen für broadcast
openwrt: SSIDs: max assoc isolation
Gut: remove 802.11b-support, limit wifi-capabilitys to some faster speeds https://github.com/freifunk-gluon/gluon/pull/467/files
kick clients with low snr
https://github.com/bittorf/kalua/blob/master/openwrt-addons/etc/kalua/wifi#L158
https://github.com/bittorf/kalua/blob/master/openwrt-addons/etc/kalua/wifi#L1686 reduce / increase txpower example ( bei uns nach client anzahl )
https://github.com/FreifunkBremen/gluon-site-ffhb branch breminale2016
https://github.com/FreifunkBremen/ffhb-packages branch breminale2016
https://github.com/FreifunkBremen/gluon branch breminale2016
Plan der Stromkabel 2015 https://www.google.com/maps/d/viewer?mid=1ePMbTgT5_khZI3DS5QFdv0tevOU
