Stop the PathSolutions service,
go into the \data directory, then delete the IP address file that is associated with that device.
Then start the service and the device will start out from scratch.
192.168.1.12.dat <-- Utilization and error counters for all interfaces
192.168.1.12-Cisco.dat <-- Cisco CPU utilization and free memory data
192.168.1.12-Latency.dat <-- Latency, jitter, loss stats to/from device