mscTrkAtmLastCalculatedVccUtilization 1.3.6.1.4.1.562.36.2.1.60.3.15.1.1

This attribute indicates the last calculated receive utilization of the ATM VCC. It is calculated every 30 seconds based on comparing the number of cells received by the AtmIf Vcc with the estimated available bandwidth on the AtmIf Vcc.