This attribute indicates the total receive cell memory size and the discard thresholds of the receive cell memory. The receive cell memory is the memory used for storing ATM cells to be received by this FP. The first value indicates the total receive cell memory size. This is derived based upon the connectionPoolCapacity and the rxCellMemoryAllocation under the ARC component. When the rxCellMemoryAvailable attribute decreases to the second value, the rxCellMemoryCongestionState changes from 3 to 2. In congestion state 2, traffic with discard priority (DP) = 3 is discarded. This threshold is set approximately at 25 percent of the first value, the total receive cell memory size. When the rxCellMemoryAvailable attribute decreases to the third value, the rxCellMemoryCongestionState changes from 2 to 1. In congestion state 1, traffic with discard priority (DP) >= 2 is discarded. This threshold is set approximately at 20 percent of the first value, the total receive cell memory size. When the rxCellMemoryAvailable attribute decreases to the fourth value, the rxCellMemoryCongestionState changes from 1 to 0. In congestion state 0, traffic with discard priority (DP) >= 1 is discarded. This threshold is set approximately at 10 percent of the first value, the total receive cell memory size. The opposite effect occurs when the rxCellMemoryAvailable attribute increases (rxCellMemoryCongestionState increases from 0 to 3 accordingly).