Occasionally it's nice to hard code a wired connection network port to not auto negotiate and force things to be 100 half duplex even though a higher speed is configured and negotiable on the switch.
Can I similarly force airport software and thus the hardware to only run one flavor of 802.11? Can I use the
airport command to prefer a higher / lower channel rather than join by signal strength? Might alternative drivers be available or some developer testing tool to exert this level of control over the WiFi chipsets in Macs.
I want to force this on the mac end for cases where I can't control the base stations or want to test a specific channel of a simultaneous dual band router that is live with other traffic.
mac:bin mike$ airport --scan SSID BSSID RSSI CHANNEL HT CC SECURITY (auth/unicast/group) na ala hele 00:26:36:9c:32:23 -59 2 Y US WPA(PSK/TKIP/TKIP) WPA2(PSK/AES,TKIP/TKIP) na ala hele 00:26:bb:79:23:1f -59 2 Y US WPA(PSK/TKIP/TKIP) WPA2(PSK/AES,TKIP/TKIP) fast na ala hele 00:26:bb:79:23:20 -74 149,+1 Y US WPA(PSK/TKIP/TKIP) WPA2(PSK/AES,TKIP/TKIP) mac:bin mike$ airport --getinfo agrCtlRSSI: -75 agrExtRSSI: 0 agrCtlNoise: -86 agrExtNoise: 0 state: running op mode: station lastTxRate: 81 maxRate: 300 lastAssocStatus: 0 802.11 auth: open link auth: wpa2-psk BSSID: 00:26:bb:79:23:20 SSID: fast na ala hele MCS: 4 channel: 149,1 mac:bin mike$ ls -l /usr/local/bin/airport lrwxr-xr-x 1 root wheel 89 Sep 13 11:40 /usr/local/bin/airport -> /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport