DURABLE: The priority mechanism used for arbitration. The possible arbitration states and values are as follows: VALUE ARBITRATION 0 First-Come-First-Served all port same Round Robin (Fair) all ports varied Round Robin (Weighted) The final case implies that not all ports have the same priority in which case a weighted Round Robin method of arbitration would be used. The default case has all ports with a value of 0 (First-Come-First-Served).