Am trying to capture Wireless traffic in 5Ghz band in 40Mhz mode (HT40). I am using "802.11a/b/g/n 3x3 Wireless LAN PCIe Mini Card" for the capture and the operating system is Ubuntu 12.04.
Following are the steps am following:
Issue I am facing.
An not able to capture the both primary and secondary channels here. First of all I have to run below command to start capturing the actual data.
iw dev wlan2 set channel 40 ht40+
but we are not able to capture the primary channel data here.
what is the right procedure to capture in 40MHz mode. How can we capture both primary and secondary data simultaneously.
asked 15 Jul '16, 03:52
edited 15 Jul '16, 16:34
Guy Harris ♦♦
Have you ever tried the follwing command?
answered 15 Jul '16, 12:05
Only a slight modification to @Christian_R's comment, which is on point - from
Channel 40 in UNII-1 band is 20MHz. I would try to move to channel 36 and use your HT+ command. It may seem equivalent to a channel 40 HT40- (i.e. channel 36 HT40+) but it may not be, depending on some specific conditions set in the driver. It may not solve your problem, just something to try.
answered 15 Jul '16, 12:44