Patent ID: 8369216
Filing Date: 2013-02-05
Classification: H04L

Abstract:
1. A method of congestion control in an internetwork having a first network and plural second networks, the method comprising: establishing a respective packet-in-flight counter for each one of the plural second networks and a respective maximum packet-in-flight indication for each one of the plural second networks; adjusting the respective packet-in-flight counter for each one of the plural second networks when a request packet is sent from any node in the first network to any node in that one of the plural second networks; adjusting the respective packet-in-flight counter of each one of the plural second networks to which a request packet is sent when a response packet is received from any node in that one of the plural second networks; determining whether a second request packet can be sent from any node in the first network to any of the plurality of nodes in one of the plural second networks, based on processing a value of the respective packet-in-flight counter for that one of the plural second networks and a value of the respective maximum packet-in-flight indication for that one of the plural second networks; and adjusting the respective maximum packet-in-flight indication for each one of the plural second networks based on a statistic that is indicative of roundtrip time for request packets sent from any node of the first network to any of the plurality of nodes in that one of the plural second networks.