IWEVENT(8)						     Linux Programmer's Manual							IWEVENT(8)

NAME

       iwevent - Display Wireless Events generated by drivers and setting changes

SYNOPSIS

       iwevent

DESCRIPTION

       iwevent displays Wireless Events received through the RTNetlink socket. Each line displays the specific Wireless Event which describes what
       has happened on the specified wireless interface.
       This command doesn't take any arguments.

DISPLAY

       There are two classes of Wireless Events.

       The first class is events related to a change of wireless settings on the interface (typically done through iwconfig or	a  script  calling
       iwconfig).  Only settings that could result in a disruption of connectivity are reported. The events currently reported are changing one of
       the following setting :
	    Network ID
	    ESSID
	    Frequency
	    Mode
	    Encryption
       All those events will be generated on all wireless interfaces by the kernel wireless subsystem (but only if the driver has  been  converted
       to the new driver API).

       The second class of events are events generated by the hardware, when something happens or a task has been finished. Those events include :

       New Access Point/Cell address
	      The  interface  has  joined  a  new  Access  Point or Ad-Hoc Cell, or lost its association with it. This is the same address that is
	      reported by iwconfig.

       Scan request completed
	      A scanning request has been completed, results of the scan are available (see iwlist).

       Tx packet dropped
	      A packet directed at this address has been dropped because the interface believes this node doesn't answer anymore (usually  maximum
	      of  MAC level retry exceeded). This is usually an early indication that the node may have left the cell or gone out of range, but it
	      may be due to fading or excessive contention.

       Custom driver event
	      Event specific to the driver. Please check the driver documentation.

       Registered node
	      The interface has successfully registered a new wireless client/peer. Will be generated mostly when the interface acts as an  Access
	      Point (mode Master).

       Expired node
	      The  registration  of  the  client/peer on this interface has expired. Will be generated mostly when the interface acts as an Access
	      Point (mode Master).

       Spy threshold crossed
	      The signal strength for one of the addresses in the spy list went under the low threshold or went above the high threshold.

       Most wireless drivers generate only a subset of those events, not all of them, the exact list depends on the specific hardware/driver  com-
       bination. Please refer to driver documentation for details on when they are generated, and use iwlist(8) to check what the driver supports.

AUTHOR

       Jean Tourrilhes - jt@hpl.hp.com

SEE ALSO

       iwconfig(8), iwlist(8), iwspy(8), iwpriv(8), wireless(7).

net-tools							   23 June 2004 							IWEVENT(8)