QL-PAUSE: A Queue length-based pause algorithm

Ethernet is a widely deployed LAN technology. With carrier sensing and the corresponding collision backoff, traditional half duplex Ethernet with CSMA/CD does not need any other explicit flow control method. With the appearance of fast Ethernet and Ethernet switch, how to efficiently use and maintain network bandwidth and the resource of Ethernet switch in full duplex Ethernet is a key issue. In this paper, a queue length-based PAUSE algorithm, QL-PAUSE, is proposed which implements IEEE PAUSE operation based on input queue length. And through simulations, it is shown that QL-PAUSE can provide now control and resource management in full duplex Ethernet, while achieving better performance and higher throughput.