Class specific setting that controls the maximum value that the Class Cell Buffer Maximum Threshold register can contain. class. A user may wish to modify this value for both for a class to limit the maximum number of cells for a given traffic class an a specific port that may be queued at one time for egress on the specific class. If the override flag is set to false, then this value is read-only and is inherited from the setting of the adGenCSMPortClassMaximumThreshold variable.