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I need a way to find out the current MCS index of the WiFi connection in Linux. I am using Ubuntu, but it doesn't necessarily have to be Ubuntu specific. I have tried several tools; iwconfig, iw, lspci, wavemon, and wicd. None seem to show that value. Those are pretty much the extent of tools I have found, and searches for finding the MCS index never seem to actually answer the question. For instance, on Mac you can hold the Option key down and click on the WiFi connection, or use "airport -I" and get this value.

Is there any tool for Linux that will get the value, or is there some other way I can determine it?

Thanks.

  • I seem to recall iw link displaying it.. Not in front of a machine with WiFi at the moment to check. BTW: is your box a client, or the AP? – derobert Dec 16 '16 at 17:01
  • Sorry, it is the client. I tried iw link, but it didn't show the MCS index value unfortunately. – TooMuchWiFi Dec 16 '16 at 18:28
  • Maybe it was iw sta dump or something... I'm sure I've seen it somewhere. When I get home (not for a while still), I'll try to remember to check on my laptop. – derobert Dec 16 '16 at 18:36
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You can get the MCS value through iw command:

iw dev wlan0 link

or

iw dev wlan0 station dump

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