cmEthernetTrafficPortShapedSpeedLo is a read-write 32-bit value specifying the lower 32 bits of this Ethernet port's shaped speed, applicable only when port shaping is enabled. An administrator sets this (together with its high-order counterpart, when a value larger than 32 bits is needed) to define the actual bit rate the port's outgoing traffic is shaped to. For example, configuring a shaped rate of 500Mbps for a contracted service would involve setting this object (and its high-order companion if the full value doesn't fit in 32 bits) to represent that target rate.