This read-create object specifies what kind of matching logic this Class Map uses, per the ClassMapType enumeration. An admin sets this to determine, for example, whether the class map matches based on ACL references, a custom offset pattern, or some other classification method available on the device. For example, an admin building a class map intended to match traffic via an existing ACL would set this type field so the device knows to consult the rlQosClassMapMatch1/2/3 ACL pointers rather than some other matching mechanism.