Channel in monitor mode

Jouni Malinen jkmaline
Mon Jan 24 07:14:51 PST 2005

On Mon, Jan 24, 2005 at 10:45:28AM -0000, Harnish Bradley J Civ AFRL/IFGB wrote:

> I am trying to use monitor mode to gather statistics 
> based on the channel or frequency on which each wlan 
> frame was received.

> Does anyone know if it is possible (and how) to get that 
> for each frame? 

IEEE 802.11b does not make this easy. Most cards can receive frames sent
at other channels. For example, a card in monitor mode on channel 1 can
receive packets sent on channel 2 (although, with reduced range).
Packets do not include explicit information about the channel.

Jouni Malinen                                            PGP id EFC895FA

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