This read-create INTEGER sets the maximum drop probability applied to Drop Precedence 0 traffic once the queue fill reaches the WRED maximum threshold configured in rlQosRedMaxDp0. An admin tunes this to control how aggressively DP0 packets get randomly discarded at peak congestion, generally keeping this probability lower for DP0 than for less-protected drop-precedence classes. For example, setting this probability low, such as 10 percent, for DP0 traffic while setting a higher probability for DP2 traffic ensures the most important traffic is dropped far less often even as the queue approaches full.