Re: monitor mode

From: Jouni Malinen (
Date: 2002-06-10 20:01:56 UTC

On Mon, Jun 10, 2002 at 03:19:58PM -0400, Vincas Ciziunas wrote:

> I have a few questions about monitor mode:
> 1) Does the monitor mode on this driver require you to manually
> set the channel like it does in the linux-wlan-ng driver?

Yes, if you would like to monitor more than one channel, you will need to change the channel manually (or by some script/program).

> 2) If you don't have to change the channel, how many packets are
> received before moving on to the next channel?

It's up to the user space application to decide when to change channels.

> 3) I also read that this mode doesn't entirely stop all TX. What
> continues to be transmitted?

It depends a bit on the used mode. Host AP driver sets porttype to pseudo IBSS before setting up monitor mode to avoid sending beacons. Anyway, there may be other packets that get sent since TX part of the BBP/PHY is not completely turned off. If one needs to stop all TX, there might be a suitable BBP control register for doing this.

Jouni Malinen                                            PGP id EFC895FA

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