I want to do the following:
I have a list of 1800 mac adress and the list is changeing every month. I want to check if these mac adress are valid or not on my network. I see three cases:
1. PC are turned off = not valid
2. PC are turned on/logged on = valid
3. PC is not longer on my network/not present = not valid
Is there a program or command I can run to check if the current MAC adress is present or not in my network? Would be fine if the result also gave me the corresponding computername and IP adress.