There are alerting mechanisms in place to let us know, for example, if a device is not responding to a ping test and is probably not going to work.
SolarWinds Pingdom offers mechanisms to alert users about non-responsive devices, valuable monitoring and reporting features, real-time threshold settings, and commendable page speed setup. Impressive metrics are provided, though integration with other products and technical support need improvement. Some functions could be more user-friendly, though Pingdom is consistently making improvements.
