Dual Round-Robin(DRR)algorithm

[6]

is a crossbar control algorithm that is fair

highly efficient

scalable and easy to implement by hardware.To improve delay performance and fairness about DRR algorithm

we advance DRR to iDRR which can run in iterations and inherits all of advantages of DRR.The results of simulation indicate that iDRR can achieve 100% throughput

furthermore

both delay performance and fairness about iDRR precede that about DRR.We implement arbiter based on iDRR by programmable logic device which can operate at clock frequency of 80MHz.It can support 10Gbps input ports

and can be used in super high speed and large capacity routers.