Is PMKID same for a specific client when it is roaming from AP1 to AP2 using WPA2-Enterprise? I have two access points (APs) setup with the same SSID name and using the same freeRADIUS server for station authentication. I have read Cisco documentation about fast roaming. So I have this doubt in my mind. Is PMKID same for a specific client when it is roaming from AP1 to AP2 using WPA2-Enterprise?

The answer is no.

PMKID is an unique value as a result of hash function combines the PMK with Access Point's MAC address and Client's MAC address.