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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
   combination. 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).



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