A system provides congestion control and includes multiple queues that temporarily store data and a drop engine. The system associates a value with each of the queues, where each of the values relates to an amount of memory associated with the queue. The drop engine compares the value associated with...http://www.google.com.tw/patents/US7359321?utm_source=gb-gplus-share專利 US7359321 - Systems and methods for selectively performing explicit congestion notification
