Continuous Down Events (no Up events)

Hi there.

We have a site get hit by lightning overnight and lost several pieces of equipment.  One of those pieces of equipment is physically disconnected at this point and yet we are seeing the following in our logs.  There are no "up" events (remember it's unplugged).  Our email alerts are continuous from this device (and a couple of dozen others at the same site with the same behavior).  Some of the email alerts say status of unknown but we do not have an alert set to trigger on that status - only down and up.

Can anyone shed any light why every 15 minutes we are getting a down event with no up events?

Thanks,

Paul

TIME OF EVENT			MESSAGE
	4/14/2014 5:00 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 4:45 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 4:30 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 4:15 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 4:00 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 3:45 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 3:30 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 3:15 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 3:00 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 2:45 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 2:30 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 2:15 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 2:00 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 1:45 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 1:30 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 1:15 PM		acs2-3map-nw.nexicom.net has stopped responding ()
	4/14/2014 1:00 PM		acs2-3map-nw.nexicom.net has stopped responding ()