I am having a problem on the network where every machine can ping a specific device (say device_X), then during the corse of the day, every machine can ping device_X appart from one specific machine (say PC_X).
Now if device_X is rebooted then PC_X can ping for a while and the it will stop pinging. Every other machine can still ping Device_X and PC_X can still ping everything else.
The route table on PC_X has been reset, it has been rebooted and it is configured like every other machine. The is no conflicting IP Addresses with PC_X, but the IP Address of PC_X cannot be changed.
The thing that is confusing me is that 1) why can PC_X still ping everything else, 2) why can everything else still ping PC_X, 3) why does it work for sometimes a few hours before stopping pinging, 4) why can everything else still ping Device_X.
The one test i cannot perform is pinging from Device_X.