#8717 NORM Not Tri: Network storm at 1CC caused by XOs

[Zarro Boogs per Child]

#8717: Network storm at 1CC caused by XOs
-----------------------------------------+----------------------------------
 Reporter:  wad                          |         Owner:  mbletsas     
     Type:  defect                       |        Status:  new          
 Priority:  normal                       |     Milestone:  Not Triaged  
Component:  wireless                     |       Version:  not specified
 Keywords:  WLAN WIFI libertas release?  |   Next_action:  never set    
 Verified:  0                            |     Blockedby:               
 Blocking:                               |  
-----------------------------------------+----------------------------------
 This afternoon, after repeated problems with testing conectivity, we
 checked the spectrum with a spectrum analyzer.   Channel 1 was completely
 hosed, showing continuous transmissions (carrier suppressed).   There was
 no break in time between packets, as is normally noticed (and was noticed
 on channels 6 and 11).

 We turned off all XO laptops at 1CC, and the problem disappeared.
 (It had not disappeared after turning off half of the laptops.) We then
 proceeded to turn most of them back on, and the problem did not reappear.

 This is a disturbing discovery, as most of the laptops at 1CC were in use
 by the testing group, connected to school servers on channels 6 and 11.

 Perhaps a WLAN device was in a state where it was transmitting
 continuously ?   Most laptops were running build 765, with some running
 older builds (specifically 763).  One machine was found running build 708.

-- 
Ticket URL: <http://dev.laptop.org/ticket/8717>
One Laptop Per Child <http://laptop.org/>
OLPC bug tracking system