tmnxLocUsrDbDhcpCIdMaskSufNum 1.3.6.1.4.1.6527.3.1.2.51.1.2.1.20

The value of the object tmnxLocUsrDbDhcpCIdMaskSufNum specifies the number of characters to remove from the end of the incoming circuitId before it is matched against the value configured in tmnxLocUsrDbDhcpCircuitId.