Power shutdown and unscheduled maintenance are excluded cos I'm the only administrator and in gateway log files there is no sign of power-outage. Both systems have been working fine as usual.
At this stage, interference seems the most likable even though is an interference that affected both ch 15 and 21. WiFi may be? During late night? Davide On 25 May 2012, at 16:43, Antonio Lignan wrote: > Unless you want to wait 7 more months to replicate the issue, this sounds > like something external messing with your testbed (power shutdown, > interference, unscheduled maintanance, etc)... > > --Antonio > > [email protected] wrote: > >> Hi all, >> >> I've just experienced a major failure of my testbed mad of two independent >> WSN >> >> Each WSN is made of 60 telosb mote and one gateway. >> The application running on telosb is a well tested customization of the >> UDPEcho application which uses the Blip stack. >> >> Two days ago both networks froze, approximately at the same time for 8 hours >> (form 1am to 9am). >> The following day, again, both networks froze from 2:30am to 8am. >> Both days, both WSN recovered automatically!!! >> >> The two WSN are totally independent and are working on separate channel. One >> on channel 15 and the other on channel 21. >> They have been working without showing any problem for more than 7 months. >> >> I had a look to the statistic packets and I found many "L2 frags dropped due >> to link failures" >> >> Do you have any idea what could have happened here? >> Any one of you had similar experience? >> Is it just coincidence? >> >> My only thought goes to a wide spectrum jamming but it doesn't make much >> sense... >> >> I'm astonished! >> >> Any idea is more than welcome. I hope to be able to identify and replicate >> the fault >> >> Thanks >> >> Davide >> _______________________________________________ >> Tinyos-help mailing list >> [email protected] >> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
