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When I run the command

nmcli dev wifi

in my console I get the list of wifi networks, including the one I'm connected to

*  SSID                  MODE   CHAN  RATE       SIGNAL  BARS  SECURITY   
*  eduroam               Infra  36    54 Mbit/s  63      ▂▄▆_  WPA2 802.1X

This seems to suggest that the maximum transfer speed is 54Mb/s. However, 

$ iwconfig 
wlan0     IEEE 802.11abgn  ESSID:"eduroam"  
          Mode:Managed  Frequency:5.18 GHz  Access Point: 30:D1:7E:EE:30:F1   
          Bit Rate=117 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=56/70  Signal level=-54 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:60   Missed beacon:0

suggests a bit rate of 117 Mb/s. Doing a quick speed test, the 117 Mb/s is closer to the truth. In fact, nmcli never reports a speed greater than 54 Mb/s regardless of the network.

  • What's the difference between nmcli and iwconfig?
  • Why does nmcli report a lower speed?
  • Ubuntu version: 15.05
csgillespie
  • 550

0 Answers0