This object specifies the Per Class Overbooking
percentage for ABR service category on this
interface. If the value of this object is 100,
Per Class Overbooking for ABR is disabled on this
interface. Specifying a value that is greater than 100
causes the CAC to scale down the bandwidth allocated to
a ABR VC on this interface by a factor that is equal
to the inverse of the overbooking percentage specified by
this object. A set request for this object will succeed
only if the value of the ifAdminStatus object for this
interface is 'down' and Interface overbooking
(rmIfOverBooking object) is disabled. A set request for
this object will not succeed if it specifies a value
that would cause the current bandwidth guarantees on
this interface to exceed the maximum bandwidth available
for guaranteed services on this interface.