公开(公告)号：US10171328B2

公开(公告)日：2019-01-01

申请号：US14304676

申请日：2014-06-13

申请人： Cisco Technology, Inc.

发明人： Davide Bergamasco ,  Andrea Baldini ,  Valentina Alaria ,  Flavio Bonomi ,  Rong Pan

IPC分类号： H04L12/825 ,  H04L12/26 ,  H04L12/801 ,  H04L12/835

摘要： The present invention provides improved methods and devices for managing network congestion. Preferred implementations of the invention allow congestion to be pushed from congestion points in the core of a network to reaction points, which may be edge devices, host devices or components thereof. Preferably, rate limiters shape individual flows of the reaction points that are causing congestion. Parameters of these rate limiters are preferably tuned based on feedback from congestion points, e.g., in the form of backward congestion notification (“BCN”) messages. In some implementations, such BCN messages include congestion change information and at least one instantaneous measure of congestion. The instantaneous measure(s) of congestion may be relative to a threshold of a particular queue and/or relative to a threshold of a buffer that includes a plurality of queues.