Both my router and my wireless networking card support the standards 802.11a/b/g/n but as I'm only getting speeds around 30-40 Mbit/s I suspect that it's the g standard being used instead of n. Now, I'd like to verify this somehow, so my question is: Is there a way (like a network diagnistics tool or the like) to find out which standard is currently used in the communication between computer and router?
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what os are you running? – Journeyman Geek♦ Nov 18 '12 at 11:01
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Instructions for either linux or windows would do, I have computers running Debian Wheezy, Windows XP and Windows 7 – yzfr1 Nov 18 '12 at 11:04
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Can someone tell me, how to do it on macOS? – Tadej Feb 21 '17 at 21:30
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On Windows (tested on Win7, should be compatible with Vista back to Windows XP):
C:\Users\kuba>netsh wlan show interfaces
There is 1 interface on the system:
Name : Wireless Network Connection 2
Description : DW1520 Wireless-N WLAN Half-Mini Card
State : connected
Network type : Infrastructure
Radio type : 802.11g <-- the currently negotiated value
Authentication : WPA-Personal
Cipher : CCMP
Connection mode : Auto Connect
Channel : 11
Receive rate (Mbps) : 54
Transmit rate (Mbps) : 54
Signal : 82%
Profile : xxxx
Hosted network status : Not started
On many Linux flavors (including Debian) use iwconfig. Although it doesn't display a string such as "802.11n", it does display Bit Rate:54 Mb/s among other settings.
