This attribute indicates if the reduction of the maximum Cell Delay
Variation (CDV) of shaped transmit traffic is applicable.
When the value of this attribute is disabled, the CDV value can be
determined by the following equation:
CDV <= 2/ASR + 1/LS
where ASR is the Actual Shaping Rate of the connection and LS is
the Link Speed of the interface.
When the value of this attribute is enabled, the CDV relationship
changes to the following equation:
CDV <= 1/ASR + 1/LS