I'm looking for a simple piece of software to do some ICMP SLA monitoring; give it a list of devices, and it will ping, record availability, packet loss, delay variance/jitter, RTT, and so on. Values should be stored, not summarized.
Scheduled downtime should be definable, including after the fact; power outtages, for example, can't be recorded until they're over.
Reporting and SLA rules would be nice, but as long as the data can be gotten to one way or the other...
Anybody have a favourite tool they can recommend?